--- title: "Joint Development Agreement in India: Due Diligence Guide for Land Acquisition Teams" description: "A practical due diligence guide for JDA land in India — title chain, EC scope, revenue records, FMB verification, planning approvals, and Tamil Nadu registration rules." author: "Vignesh Nagarajan" author_profile: https://proquiro.com/authors/vignesh-nagarajan date: 2026-09-23 category: guide methodology: "This guide treats a JDA as an instrument whose rights and registration requirements depend on its clauses. The Transfer of Property Act 1882 and Registration Act 1908 supply the general framework; the current Tamil Nadu duty schedule and parcel-specific legal advice are needed before execution. Revenue records are cross-checks, not proof of title. Thirty years is a common search starting point rather than a statutory minimum." sources: [{"title":"Transfer of Property Act, 1882 — section 54 (sale defined)","publisher":"India Code, Ministry of Law and Justice","url":"https://www.indiacode.nic.in/indiacode/bitstream/123456789/2338/1/A1882-04.pdf","evidence_type":"primary-source","checked_date":"2026-09-15"},{"title":"Registration Act, 1908 — sections 17 and 49 (compulsory registration and consequences of non-registration)","publisher":"India Code, Ministry of Law and Justice","url":"https://www.indiacode.nic.in/indiacode/bitstream/123456789/2190/5/A1908-16.pdf","evidence_type":"primary-source","checked_date":"2026-09-15"},{"title":"TNREGINET Duty and Fees schedule — current stamp duty and registration fee rates","publisher":"Tamil Nadu Registration Department (TNREGINET)","url":"https://tnreginet.gov.in/portal/webHP?requestType=ApplicationRH&actionVal=openDutyAndFee&screenId=114&auditUSFlag=true","evidence_type":"primary-source","checked_date":"2026-09-15"},{"title":"Tamil Nadu eServices — Patta-Chitta, A-Register and FMB online verification","publisher":"Government of Tamil Nadu","url":"https://eservices.tn.gov.in/","evidence_type":"primary-source","checked_date":"2026-09-15"},{"title":"TNRERA — Tamil Nadu Real Estate Regulatory Authority project registration","publisher":"Government of Tamil Nadu","url":"https://rera.tn.gov.in/","evidence_type":"primary-source","checked_date":"2026-09-15"}] tags: ["joint-development-agreement", "due-diligence", "land-acquisition", "india", "tamil-nadu", "title-verification", "guide"] canonical_url: https://proquiro.com/blog/joint-development-agreement-due-diligence-india --- A joint development agreement (JDA) defines how a land owner and developer will develop a parcel and share the result. The actual rights granted, possession terms, conveyance sequence and risk allocation depend on the signed documents. Title disputes, new encumbrances and planning delays can still arise between execution and the eventual unit sales. The acquisition team's job is to close as many of those gaps as possible before committing to the JDA, not after. This guide covers the evidence sequence, document checks, and Tamil Nadu-specific verification steps that reduce the window between execution date and the clear title the developer ultimately relies on. This is regulatory and practical information for acquisition planning, not a title opinion or legal advice. Parcel-specific risks require assessment by a Tamil Nadu property lawyer and the competent revenue and planning authorities. ## How a JDA Differs from a Sale: What the Acquisition Team Must Understand First A JDA is not, merely by its label, a sale deed under section 54 of the Transfer of Property Act, 1882. Some JDAs grant only contractual development rights; others include possession, a power of attorney, a proposed conveyance or rights that need separate analysis. Counsel should identify exactly what each instrument creates and whether registration and stamp duty requirements apply to it. This makes the deed chain, encumbrances, co-owner consent and restrictions on later dealings central to the review. The developer needs evidence of the owner's authority to grant the agreed rights and a clear process for future conveyances. Deferring the title review until unit registration can surface defects after money has been committed. | Risk category | JDA diligence question | Outright purchase diligence question | | ------------------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------- | | Title dispute emerging after signing | What warranties, disclosure and remedies does the JDA give? | What defect survives conveyance and what remedy is available? | | New encumbrance during construction | Who may mortgage the land, and how is consent controlled? | What security and lender consents affect the parcel? | | Planning approval delay or failure | Which party bears approval costs and must sign applications? | Which approvals are conditions of purchase? | | Land owner non-cooperation | What signatures and dispute-resolution steps are required? | What post-sale cooperation remains necessary? | | Revenue record mismatch | Who must correct an existing discrepancy? | Who applies for transfer of registry after conveyance? | The same title evidence is needed for either structure, while a JDA adds contract, authority and future-conveyance questions. Track those documents explicitly through the pipeline. ## Establishing Clean Title Before the JDA Is Signed The title chain for a JDA parcel must satisfy the same tests as for an outright sale. The acquisition team must verify: - The land owner's chain of ownership for the period set by counsel, commonly starting with a 30-year search and extending further where the root of title requires it - No gap years where a transfer occurred but the deed was not registered or indexed - The succession evidence appropriate to any inherited title; probate or a succession certificate is not automatically required for every parcel - No court decree — attachment, injunction, receiver order — operating on the property that could re-vest or partition title - For government-assigned land, the original assignment conditions and any required permission must permit the proposed development The acquisition team must read each deed in the chain, not just the summary entry in the Encumbrance Certificate. The EC records what was registered and indexed for the identifiers and period searched — it cannot flag a deed that was executed but not registered, a document in the chain that used different survey identifiers, or an assignment condition buried in the original grant order. | Title chain check | Evidence required | Common failure mode | | ---------------------------------------- | ------------------------------------------------------ | ------------------------------------------------------------------ | | Ownership chain depth | Deeds to the root of title identified by counsel | Chain stops at a vendor who cannot produce the prior deed | | Inherited title | Will, heirship or probate evidence as applicable | Informal family succession accepted without legal confirmation | | Government assignment | Original grant order and any required permission | Assignment conditions prohibit development; not reviewed | | Court decree | Certified copy of decree and final order | Pending appeal not flagged; decree reversed after JDA executed | | Power of attorney used in prior transfer | Instrument, scope of authority and deed referencing it | Authority may have ended before the transaction | | Prior development agreement | EC search and direct enquiry with SRO | Prior JDA not yet terminated; developer not the only rights-holder | For the warning signs in a title chain that should stop a deal, see [Title Risk Assessment: 8 Warning Signs in Land Records](/blog/title-risk-assessment-warning-signs). ## Revenue Records Required for a JDA Parcel Revenue records help cross-check the recorded holder, area, classification and survey identifiers. They do not by themselves establish title. For a rural Tamil Nadu JDA parcel, compare the following records with the deed chain; an urban parcel may call for TSLR and local-body records instead. **Patta-Chitta** identifies the recorded holder, survey number and sub-division, area, and revenue classification for a rural parcel. Compare it with the JDA party and investigate any mismatch with the deed chain; an older name may mean a prior transfer of registry is pending. See the [Patta-Chitta records guide](/states/tamil-nadu/patta-chitta) for the online verification process. **[A-Register extract](/states/tamil-nadu/a-register)** confirms the survey number, sub-division, area, and land classification for rural parcels computerised under Tamil Nilam. It supplements and cross-checks the Patta-Chitta for most rural sites. **FMB sketch** records the field measurement boundaries, dimensions, and sub-division shape for the survey number. A developer committing to a JDA must confirm that the FMB sketch matches the parcel described in the sale deeds and the Patta, that no adjacent-parcel boundaries have shifted informally, and that the FMB correctly reflects any sub-division of the original survey. Access the FMB for Tamil Nadu parcels through the [FMB records portal](/states/tamil-nadu/fmb). **Revenue classification** is a warning to check the planning designation and any required change-of-use permission. A patta entry alone does not prove that a building use is allowed. Confirm the route for agricultural land before execution. See [Agricultural Land Conversion in Tamil Nadu](/blog/agricultural-land-conversion-tamil-nadu-na-conversion) for the approval sequence. | Revenue document | Online portal | What to verify | Flag if | | ---------------------- | --------------------------------------------- | ------------------------------------------------------------- | ------------------------------------------------------------------- | | Patta-Chitta | eservices.tn.gov.in | Owner name, survey number, sub-division, area, classification | Owner name differs from JDA party; area differs from deed | | A-Register extract | eservices.tn.gov.in | Survey number, sub-division, land classification, area | Classification inconsistent with Patta; survey number unresolvable | | FMB sketch | eservices.tn.gov.in | Boundaries, dimensions, sub-division alignment | Boundaries do not match deed description or physical site perimeter | | Revenue classification | Patta-Chitta, A-Register and planning records | Recorded class and permitted use | Proposed use lacks required approval | ## Encumbrance Certificate: Scope and Sequencing for a JDA Site The Encumbrance Certificate (EC) reflects documents indexed for the searched SRO, identifiers and period. A 30-year search is a common starting point, not a statutory minimum or a guarantee of clear title. Where the deed chain shows an earlier survey number, a renumbering, a sub-division change or a prior SRO jurisdiction, extend the search to cover those identifiers and periods. An EC also cannot replace inspection of the underlying deeds and relevant court records. If the JDA is registered, check its registration receipt and later verify how it appears in the SRO index. Do not assume every JDA is automatically returned by a search on the current survey number. Run a fresh EC search before each proposed conveyance because new registered instruments may appear during construction. See the [Encumbrance Certificate verification guide](/states/tamil-nadu/encumbrance-certificate) for the SRO search process. For a walkthrough of how to read each EC entry type, see [Encumbrance Certificate Verification in India](/blog/encumbrance-certificate-verification-india). | EC search sequence | Timing | Purpose | | ---------------------------------- | -------------------------------------------------- | ------------------------------------------------------------------------ | | Pre-JDA search | Before signing the JDA | Confirm no prior mortgages, attachments, or prior development agreements | | Cross-SRO search (if applicable) | Before signing the JDA | Cover prior jurisdictions if the village was transferred between SROs | | Post-JDA registration confirmation | After SRO indexing, if registered | Confirm the instrument's index details | | Pre-individual-sale-deed search | Immediately before each registration at completion | Confirm no new encumbrances registered during construction | ## FMB and Survey Verification for JDA Land A JDA site is frequently assembled from multiple survey sub-divisions, or from a sub-division of a larger parcel that was partitioned informally over generations. The acquisition team must verify that the FMB sketch covers the correct sub-division numbers, that all sub-divisions being contributed to the JDA are in the signing land owner's name in the Patta, and that the aggregate area in the FMB matches the area stated in the JDA schedule. Where the land has been informally sub-divided — a family member fenced off a portion without a formal survey revision — the FMB may not reflect the actual boundary. Commission a fresh ground survey by a licensed Tamil Nadu surveyor before finalising the JDA schedule, and compare the result against both the FMB and the adjacent Patta records. | Survey verification step | Document | What to confirm | | ------------------------------------ | -------------------------- | --------------------------------------------------------------------------- | | Sub-division alignment | FMB sketch vs Patta-Chitta | Each sub-division listed in the JDA schedule has a matching FMB entry | | Aggregate area consistency | FMB vs JDA schedule | Area in the JDA schedule matches the sum of the FMB sub-divisions | | Informal partition check | FMB vs site measurement | FMB boundaries match the physical perimeter confirmed on-site | | Old–new survey number reconciliation | Village survey records | Prior survey identifiers in the deed chain can be traced to current numbers | | Adjacent-parcel boundary | FMB and neighbour Patta | No encroachment onto or by an adjacent survey number | ## Planning Zone and Land-Use Conversion Requirements A JDA can grant development rights, but their commercial value depends on whether the planning framework permits the proposed use on the parcel. Confirm permissible use before signing. For land inside the Chennai Metropolitan Planning Area, the [CMDA](https://www.cmdachennai.gov.in/) master plan zone determines permissible uses, FSI, and setback requirements. Residential, commercial, and mixed-use development must be confirmed against the applicable development regulations; layout approval from CMDA or the local body may be required before the developer can market individual plots or units. For Tamil Nadu land outside notified planning areas, the 2017 Change of Land Use Rules (amended by G.O. Ms. No. 53 in March 2025) govern conversion of agricultural land to non-agricultural uses. The route depends on whether the land is classified as wet or dry agricultural. For projects requiring [TNRERA](https://rera.tn.gov.in/) registration, section 3 of the Real Estate (Regulation and Development) Act restricts advertising, marketing, booking and sale before registration. Check the project's exemption and threshold before soliciting buyers. | Trigger condition | Approval required | Competent authority | | ---------------------------------------------- | ------------------------------------------------------------ | ----------------------------------------------------------------------------------------- | | Agricultural land in non-planning area | Conversion permission under 2017 rules (amended 2025) | Director, Town and Country Planning; concurrence or NOC routed through DTCP online portal | | Land inside Chennai Metropolitan Planning Area | Planning permission; layout approval for plotted development | CMDA | | Land in DTCP or local planning authority area | Planning permission or scheme approval | DTCP or local planning authority | | Residential project above RERA threshold | Project registration with TNRERA | TNRERA | | Land in a notified coastal-regulation area | Confirm applicable CRZ permission and restrictions | Competent coastal-zone authority | | Agricultural land near water body | Wetland and waterbody verification | District Collector; State Wetlands Authority | ## JDA vs. Outright Purchase: Financial and Risk Comparison The JDA and an outright purchase involve different capital profiles, risk distributions, and due diligence implications. The acquisition team's role is to size the risk transfer and evidence requirements accurately — not to advocate one structure over the other, which is a business and legal decision. | Factor | JDA | Outright purchase | | --------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- | | Upfront capital | Depends on deposit, land-owner share and milestone payments | Usually includes the purchase price at conveyance | | Stamp duty on the land instrument | On the development agreement instrument; rate is different from a sale deed — check the current TNREGINET Duty and Fees schedule | 9% total (5% stamp duty + 2% transfer duty + 2% registration fee) on the applicable market value under TNREGINET's valuation rules | | Title at execution | Depends on the instrument; often remains with the land owner until later conveyance | Buyer takes title under a valid registered conveyance | | Title risk during development | Review owner restrictions, lender rights and remedies in the JDA | Review existing and later encumbrances on the buyer's title | | Seller default remedy | Contract and available legal remedies depend on the facts | Post-conveyance duties and remedies depend on the sale terms | | Revenue record update | Correct any existing holder mismatch; transfer of registry follows an actual conveyance | Apply for transfer of registry after purchase | | RERA project registration | Same thresholds and obligations as outright purchase | Same thresholds and obligations | | Patta mutation obligation | A JDA alone does not make the developer the new patta holder | Buyer applies after conveyance | ## Key JDA Clauses the Acquisition Team Must Flag The acquisition team is not legal counsel, but it must identify the structural gaps in a JDA draft before the legal review is complete — because those gaps determine how much of the risk framework built by due diligence can be enforced if the land owner defaults or a defect surfaces. | Clause | What to verify | Risk if absent or weak | | -------------------------------------- | -------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- | | Continuity of development rights | Counsel checks what happens on death, insolvency, transfer or default | Project rights may become disputed mid-build | | Scope and validity of POA | Powers, execution, stamp duty, registration if applicable, and termination are reviewed by counsel | Developer may lack authority to sign an approval or conveyance | | Representations and indemnity on title | Land owner warrants clean title and discloses all encumbrances; indemnity for costs of clearing a defect | Developer absorbs cost of clearing a defect the land owner concealed or created | | Revenue record cooperation obligation | Land owner must resolve existing mismatches and assist buyers after a conveyance | A recorded-holder mismatch may delay financing or approval checks | | JDA schedule accuracy | Schedule precisely identifies survey numbers, sub-divisions, and aggregate area | Boundary disputes at build stage; individual sale deeds may reference wrong survey identifiers | | Development approval cooperation | Land owner must sign applications requiring the titleholder's signature | Planning permission cannot be obtained if the land owner withholds signature as leverage | | Dispute resolution | Counsel checks available forums, arbitration clause and governing law | Jurisdictional ambiguity may delay enforcement | ## Stamp Duty and Registration for JDA Instruments in Tamil Nadu The words “development agreement” do not alone decide whether an instrument must be registered or what duty it attracts. Section 17 of the Registration Act, 1908 turns on the rights created or declared; agreements intended to support a section 53A part-performance claim have a specific registration rule. Ask Tamil Nadu property counsel and the SRO to classify the signed JDA, any conveyance and any accompanying power of attorney before execution. Stamp duty depends on the instrument's wording and the rights it creates. The 9% total for a standard Tamil Nadu conveyance (5% stamp duty + 2% transfer duty + 2% registration fee on the applicable market value under TNREGINET's rules) is **not a default JDA quote**. Some instruments may be assessed under a conveyance entry depending on their terms. Ask counsel and the SRO to confirm the classification and current [TNREGINET Duty and Fees schedule](https://tnreginet.gov.in/portal/webHP?requestType=ApplicationRH&actionVal=openDutyAndFee&screenId=114&auditUSFlag=true) for each JDA-related document before execution. A power of attorney is authority to act, not a deed transferring title. Its execution, authentication, stamp duty and registration requirements depend on the powers and applicable Tamil Nadu rules. Section 49 also has a proviso allowing an unregistered instrument to be received as evidence of a contract in a specific-performance suit or for a collateral transaction in stated circumstances; a blanket claim that every unregistered JDA is unenforceable would be wrong. | JDA-related document | Registration required | Key post-registration check | | ------------------------------------------ | ------------------------------------------------------------------------------- | ------------------------------------------------------------------- | | Development agreement | Depends on rights created and applicable law; obtain counsel/SRO classification | If registered, confirm receipt and index details | | Power of attorney | Check applicable execution, authentication, duty and registration rules | Confirm powers and validity before each use | | Individual sale deed at project completion | Yes, for conveyance of immovable property | Fresh EC search, authority to convey and required project approvals | For an estimate of Tamil Nadu stamp duty and registration fees on the eventual sale deeds for individual units, use the [stamp duty calculator](/tools/stamp-duty-calculator). ## Stage-by-Stage JDA Due Diligence Timeline Sequencing matters. A survey defect found at the pre-LOI stage can be resolved in weeks at low cost. The same defect found after the JDA is executed, the POA registered, and advances paid to the land owner costs significantly more in time, legal fees, and deal restructuring. | Stage | Timing relative to JDA | Evidence target | Go / no-go gate | | ----------------------------------- | ------------------------------------------- | ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- | | Pre-LOI title scan | Before Letter of Intent signed | Title chain summary, EC search scoped by counsel, current revenue and survey records | Prior agreements identified; land owner name reconciled with deed chain | | Full evidence build | LOI to draft JDA | Deeds to root of title, A-Register/FMB or urban equivalents, planning zone and conversion route | No unexplained gaps; proposed use confirmed in writing | | Legal review | Concurrent with JDA draft | All evidence reviewed by counsel; JDA clause checklist completed | Legal clearance across all evidence categories; structural gaps in JDA flagged to business team | | JDA execution and instrument checks | JDA signing | Execute and register instruments as applicable | Duty, execution and registration evidence retained | | Post-registration EC confirmation | After indexing, if registered | EC search on relevant identifiers | Registered instrument details reconciled | | Revenue record correction | Before approvals if a mismatch exists | Resolve prior holder or survey discrepancy | Corrected record or documented resolution obtained | | Pre-construction approvals | After JDA, before any construction activity | CMDA or DTCP planning permission; TNRERA project registration | All mandatory approvals issued; RERA registration number obtained | | Individual sale deeds | At project completion, per unit | Pre-registration EC search; updated Patta; completion certificate | Fresh EC clean for that survey number; Patta shows correct current state | ## Common Defects That Collapse JDA Deals These failure modes surface most often during the evidence review phase. Each is faster and less expensive to identify before the JDA is executed than after. | Defect | How to detect | Consequence if undetected at JDA stage | | -------------------------------------------------- | ------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- | | Prior undisclosed development agreement | EC search covering relevant period; inspect deeds and ask the owner | A prior party may claim competing development rights | | Transfer of registry missing after an earlier sale | Compare patta holder with deed vendor chain | Holder mismatch needs investigation before relying on the owner's authority | | Survey number discrepancy between deed and FMB | Cross-check FMB sub-division against deed schedule; ground survey | Developer builds on the wrong parcel; individual sale deeds reference incorrect survey identifiers | | Agricultural classification without confirmed use | Revenue classification; planning authority confirmation | Project may lack a required land-use approval | | Undisclosed mortgage | EC search using all survey identifiers; cross-SRO search | Mortgagee has priority over developer's contractual rights; lenders refuse to fund buyers | | Informal succession without legal confirmation | Request the heirship and will evidence appropriate to the case | Other heirs may dispute title after execution | | Court attachment or lis pendens | EC search; direct court search at district civil court | Court freezes transfer; project stalled for duration of litigation | | POA scope or validity unclear | Check instrument, execution and applicable registration rules | Developer may lack authority to sign a deed or approval | ## Building the JDA Evidence Pack in a Structured Workflow A JDA evidence pack must track the executed instruments and be refreshed at later stages: any registration and index confirmation, correction of earlier revenue-record discrepancies, and pre-conveyance searches for individual units. The [document readiness checker](/tools/document-readiness-checker) provides the structured evidence checklist for the core title, revenue, and registration documents. For JDA-specific tracking, the team should also maintain a separate log covering: 1. JDA execution details and registration reference, if applicable 2. POA reference, powers and validity period 3. EC confirmation date and index details if the JDA was registered 4. Status of any existing patta-holder or survey discrepancy 5. TNRERA project registration number and date 6. Date and result of the pre-sale-deed EC search for each unit being registered | Evidence category | Documents | Refresh timing | | ------------------------- | ------------------------------------------------------------------------ | ---------------------------------------------------------- | | Title chain | Registered deeds to the root identified by counsel | Before LOI; update if new deed is found | | Revenue records | Patta-Chitta, A-Register, FMB sketch | Before JDA; re-pull Patta before each individual sale deed | | Encumbrances | EC — pre-JDA, post-registration if applicable, pre-sale-deed | Refresh at each relevant transaction stage | | Planning and conversion | Planning zone confirmation; conversion permission; CMDA or DTCP approval | Before JDA draft; update when new approval received | | JDA execution documents | Executed JDA and POA; registration evidence where applicable | At execution and after SRO indexing where applicable | | RERA project registration | RERA registration certificate, if required | Before advertising, booking or sale | | Individual sale deeds | Pre-registration EC, updated Patta, completed deed copy | Before each registration at completion | ## Working JDA Parcels Through the Acquisition Pipeline A JDA that looks straightforward at LOI stage can carry multiple interacting issues: an informal boundary shift that conflicts with a neighbour's Patta, an EC from the wrong SRO period, a Patta mutation pending for years because a prior transfer was never followed up. Individual issues are findable in isolation; their interactions across a portfolio of 20 or more active JDA parcels at different stages become difficult to track manually. The [document verification feature](/features/document-verification) provides a place to organise the parcel's evidence. For a structured entry point into each parcel's sequence, the [land due diligence checklist](/tools/land-due-diligence-checklist) covers the stages from pre-LOI to individual sale deed. For background on how JDA and sale deed structures differ in terms of what each party has actually secured, see [Sale Deed vs. Agreement to Sell: Land Acquisition Risks](/blog/sale-deed-vs-agreement-to-sell-land-acquisition). The core discipline for JDA due diligence is sequencing: title chain and EC before the LOI, survey and planning confirmation before the JDA draft, instrument execution and required approvals before construction, and a fresh EC before every individual sale deed. Track any revenue-record correction separately from a transfer of registry after an actual conveyance. ## Sources and editorial notes ### Methodology This guide treats a JDA as an instrument whose rights and registration requirements depend on its clauses. The Transfer of Property Act 1882 and Registration Act 1908 supply the general framework; the current Tamil Nadu duty schedule and parcel-specific legal advice are needed before execution. Revenue records are cross-checks, not proof of title. Thirty years is a common search starting point rather than a statutory minimum. ### Sources - [Transfer of Property Act, 1882 — section 54 (sale defined)](https://www.indiacode.nic.in/indiacode/bitstream/123456789/2338/1/A1882-04.pdf) — India Code, Ministry of Law and Justice; primary-source; checked 2026-09-15 - [Registration Act, 1908 — sections 17 and 49 (compulsory registration and consequences of non-registration)](https://www.indiacode.nic.in/indiacode/bitstream/123456789/2190/5/A1908-16.pdf) — India Code, Ministry of Law and Justice; primary-source; checked 2026-09-15 - [TNREGINET Duty and Fees schedule — current stamp duty and registration fee rates](https://tnreginet.gov.in/portal/webHP?requestType=ApplicationRH&actionVal=openDutyAndFee&screenId=114&auditUSFlag=true) — Tamil Nadu Registration Department (TNREGINET); primary-source; checked 2026-09-15 - [Tamil Nadu eServices — Patta-Chitta, A-Register and FMB online verification](https://eservices.tn.gov.in/) — Government of Tamil Nadu; primary-source; checked 2026-09-15 - [TNRERA — Tamil Nadu Real Estate Regulatory Authority project registration](https://rera.tn.gov.in/) — Government of Tamil Nadu; primary-source; checked 2026-09-15