Authorities Made Easy: Planning Permission and Land Use in Chennai (2026 Guide)

Who approves your building in Chennai depends on two things: where the plot sits and how big the building is. A small house can now get its permit instantly by self-certification, a mid-sized home inside the city goes to the Greater Chennai Corporation, and anything larger, along with any change of land use, goes to CMDA. Outside the metropolitan area, the Directorate of Town and Country Planning (DTCP) takes over.

The land comes first, though: the zone your survey number falls in, and whether the plot sits in an approved layout. Get those right and the permit is usually paperwork.

First question: which authority governs your plot?

The Chennai Metropolitan Development Authority (CMDA) is the planning authority for the Chennai Metropolitan Area (CMA). According to the CMDA website, the CMA was expanded in October 2022 by 1,225 villages and now covers 5,904 sq km across Chennai and parts of Thiruvallur, Kancheepuram, Chengalpattu and Ranipet districts, including the Avadi, Tambaram and Kancheepuram corporations.

Rule 5 of the Tamil Nadu Combined Development and Building Rules, 2019 makes CMDA, or a local body it has delegated the power to, the authority for planning permission. The building permit comes from the local body. Who does what depends on size:

• Greater Chennai Corporation (GCC): the Corporation's Town Planning department issues both for homes of stilt plus three or ground plus two floors, up to 12 m, 16 dwelling units and 10,000 sq ft, and for commercial buildings of that height up to 300 sq m.
• CMDA: everything above those limits, including special buildings, group developments and high-rise buildings (over 18.30 m). CMDA issues planning permission and the local body then issues the building permit.
• Other local bodies in the CMA: smaller buildings are approved locally under delegated powers. The state portal's power delegation table sets the residential limit at 10,000 sq ft, 12 m, eight dwelling units and ground plus two or stilt plus three.
• DTCP: outside the CMA, the local body handles small buildings and DTCP's district or head office handles the rest, by size.

Not sure which local body your village is in? Use the portal's Know Your Local Body search.

The rulebook that applies in Chennai

The Second Master Plan for the CMA, in force since 2 September 2008, sets the land use zones. The Tamil Nadu Combined Development and Building Rules, 2019 (TNCDBR), notified on 4 February 2019, set the building rules across the state. CMDA's TNCDBR page lists 14 amendments, the latest dated 30 October 2025. The ones that matter most for a house:

• G.O. Ms. No. 69 (11 March 2024) raised from 12 m to 14 m the height up to which a building needs only a registered architect or engineer on the application, and the height for the completion certificate exemption.
• G.O. Ms. No. 133 (18 July 2024) brought in self-certification, and G.O. Ms. No. 118 (8 August 2025) extended it to stilt plus two floors (step three).
• G.O. Ms. No. 161 (15 October 2025) renamed "reclassification" as "Change of Use of Land", with its own application form.

For what setbacks, FSI and height limits mean on your plot, see our explainer on setbacks, FAR and height limits.

Step one: read the land record and the land use before you pay anything

Tamil Nadu's land records are on the Revenue Department's e-Services of Land Records portal. Pull the patta, chitta and field measurement book (FMB) sketch, or the Town Survey Land Register in city areas, and check the owner and extent against the sale deed.

Then check the zone. CMDA's Masterplan Land Use Maps show the zone by local body and village. If the plot is not in a residential zone, step two applies. Our plot due diligence checklist covers the other checks to run before you pay.

Step two: agricultural land, unapproved layouts and change of land use

If the zoning is wrong: Change of Use of Land

Inside the CMA, the zone decides. A plan that does not conform to the Master Plan land use is refused, according to CMDA's planning permission page. If your land is zoned for something else, you apply to CMDA for a Change of Use of Land with title deeds, patta and FMB, and a site and topography plan covering 500 m. The portal's CMDA procedure page lists these fees:

The change is advertised first, so budget months, and never buy assuming it will be granted.

Outside planning areas, the Change of Land Use (Agriculture to Non-agriculture in Non-planning Areas) Rules, 2017 apply: you apply to the local body, which needs DTCP's concurrence, and DTCP needs the Collector's concurrence for wet land or an agriculture department report for dry land. Our Pune guide shows how differently Maharashtra handles conversion.

If the layout is unapproved: the regularisation scheme

The Tamil Nadu Regularisation of Unapproved Plots and Layouts Rules, 2017 cover layouts where at least one plot was sold by a deed registered on or before 20 October 2016, and not later ones.

• The window is open until 30 June 2027. G.O. (Ms) No. 148, dated 27 July 2026 and published on CMDA's regularisation portal, extended the time to apply for all plots in such layouts from 30 June 2026 to 30 June 2027, with no change to the conditions.
• Individual buyers have no deadline. The same order records that, under a May 2025 order, a buyer of an individual plot with a deed registered before 20 October 2016 can apply online at any time.
• It works in two stages. CMDA (or DTCP outside the CMA) approves the layout framework, then the local body regularises each plot after checking ownership and collecting the charges.

This matters for your permit: both routes below ask for an approved or regularised layout, or proof that the plot existed before 20 October 2016.

Step three: the building permit on the Single Window Portal

Paper is no longer accepted. Applications to GCC and other local bodies, including self-certification, go through the Tamil Nadu Single Window Portal for Planning Permission, which publishes a document checklist. Proposals for CMDA itself go on CMDA's Online PPA portal. CMDA's online PPA page notes that layouts have been online only since 19 September 2023.

The instant route: self-certification

For a small house, the permit no longer waits for an officer. Under G.O. Ms. No. 133, as extended by G.O. Ms. No. 118:

• the plot can be up to 2,500 sq ft, with floor area up to 3,500 sq ft, at most two dwelling units, and ground plus one or stilt plus two floors, up to 10 m high;
• the plot must be in an approved layout or sub-division, a regularised layout, a natham, or registered by a deed before 20 October 2016;
• it does not apply in CRZ or hill areas, on land zoned agricultural, institutional, non-urban or open space, or on land reserved for roads;
• FSI is 2.0, with reduced setbacks (a 1.5 m front setback in most areas);
• there is no scrutiny fee, and once the charges are paid the approved plan and permit are generated online with a QR code.

An architect or registered engineer still signs the drawings, and you undertake to build to them.

The normal route, and how long it should take

Everything else is scrutinised. Under rule 10 of the TNCDBR, the authority can ask for more particulars within 15 days and must issue the permission within 45 days of receiving the plan and everything required. Under rule 14, a planning permission or building permit is valid for five years from issue, and the work must be finished within it; the authority can extend it once by three years if you apply before it expires. (CMDA's web page still says three years, which predates the 2019 rules.)

What was announced in August 2026. DT Next reported that the state will raise self-certification to 5,000 sq ft for ground plus two and stilt plus three homes, introduce third-party certification up to 8,070 sq ft, and let corporations and municipalities approve homes up to 16,140 sq ft. As of 16 October 2026, no amendment for this appears in the lists CMDA and DTCP publish, so the limits above still apply until it is notified.

Only registered professionals can file, so appoint your architect early. For a realistic budget once approvals are in hand, see our Chennai construction cost breakdown.

Step four: inspections and the completion certificate

The portal's checklist sets out the stages after approval: a commencement notification, a plinth level inspection intimation with photographs of the setbacks on all four sides, a last storey inspection intimation, and the completion certificate. Small deviations caught at plinth are a redraw; caught later, they can mean demolition.

Under rule 20 of the TNCDBR, as amended in 2024 (G.O. Ms. No. 69 and G.O. Ms. No. 123), electricity, water and sewerage connections need the completion certificate. Exempt are homes up to 14 m with no more than eight dwelling units or 750 sq m, commercial buildings up to 300 sq m and 14 m, and industrial buildings. The authority is to decide within 30 days.

The Third Master Plan: what is changing

CMDA ran a public vision survey for a Third Master Plan in 2023 and an experts' seminar on 18 October 2023, according to its press releases. As of 16 October 2026, no draft has been published for objections. Deccan Chronicle reported on 11 August 2026 that the initial draft, covering 2026 to 2046 and the original 1,189 sq km area, was in weekly departmental consultations and that its release would be delayed by at least a year. LiveChennai reported in July 2026 that once the government approves the draft, it goes out for a two-month public consultation before it is notified.

Until then the 2008 plan governs, so buy on today's zone, not a reported draft.

The sequence, in one place

1. Find your local body and check whether the plot is in the CMA.
2. Check the patta, chitta and FMB against the deed.
3. Check the zone on CMDA's land use maps; if it is wrong, apply for a Change of Use of Land or walk away.
4. If the layout is unapproved and pre-dates 20 October 2016, regularise it.
5. Appoint an architect or registered engineer to file the plans: by self-certification if the house qualifies, otherwise to GCC, the local body, CMDA or DTCP.
6. Notify commencement, plinth and last storey.
7. Get the completion certificate, unless exempt.

Frequently asked questions

Is it CMDA or the Greater Chennai Corporation that approves my house?

For most houses inside the city, the Corporation: GCC handles homes up to ground plus two or stilt plus three, 12 m, 16 dwelling units and 10,000 sq ft. Larger buildings need CMDA's planning permission, then GCC's building permit.

Can I get instant building approval in Chennai?

Yes, under self-certification: a plot up to 2,500 sq ft, floor area up to 3,500 sq ft, at most two homes, ground plus one or stilt plus two, up to 10 m, in an approved or regularised layout. The permit is generated once the charges are paid.

How long does planning permission take in Chennai?

The rules set 45 days from receipt of the plan and all required documents, with queries allowed in the first 15 days. Self-certified houses get the permit on payment.

Can I build a house on agricultural land near Chennai?

Not until the land use allows it. Inside the CMA, agricultural zoning needs a Change of Use of Land from CMDA. Outside planning areas, the 2017 rules apply, with the Collector's concurrence for wet land.

Do I need a completion certificate for a house in Chennai?

Not for a home up to 14 m with no more than eight dwelling units or 750 sq m. Larger buildings need one before utility connections.

Approvals go faster with someone who has filed in your area before. Browse architects on MOA, see their work and message them directly, with no commission on either side.

Sources

• CMDA: CMA profile, Planning Permission, Master Plan and Masterplan Land Use Maps (accessed 16 Oct 2026)
• CMDA: Tamil Nadu Combined Development and Building Rules, 2019 and amendments, including the rules as notified (G.O. Ms. No. 18, 4 Feb 2019) (accessed 16 Oct 2026)
• CMDA: Online Planning Permission Application and press releases (accessed 16 Oct 2026)
• Greater Chennai Corporation: Town Planning department, building permit procedure (accessed 16 Oct 2026)
• Housing and Urban Development Department: Tamil Nadu Single Window Portal for Planning Permission, with its documents needed, change of land use procedure (CMDA) and power delegation details (accessed 16 Oct 2026)
• DTCP: State rules and TNCDBR amendments, including G.O. Ms. No. 69 (11 Mar 2024), G.O. Ms. No. 123 (28 Jun 2024), G.O. Ms. No. 133 (18 Jul 2024), G.O. Ms. No. 118 (8 Aug 2025) and G.O. Ms. No. 161 (15 Oct 2025) (accessed 16 Oct 2026)
• Housing and Urban Development Department: G.O. Ms. No. 79 (4 May 2017), Change of Land Use (Agriculture to Non-agriculture in Non-planning Areas) Rules, 2017 (accessed 16 Oct 2026)
• CMDA: Regularisation of unapproved plots and layouts portal, including G.O. (Ms) No. 148 (27 Jul 2026) (accessed 16 Oct 2026)
• Revenue Department, Tamil Nadu: e-Services of Land Records (accessed 16 Oct 2026)
• DT Next: Tamil Nadu eases building approvals with new measures, grants more power to local bodies (Aug 2026) (accessed 16 Oct 2026)
• Deccan Chronicle: 3rd Master Plan for Chennai Metropolitan Area to be delayed (11 Aug 2026) (accessed 16 Oct 2026)
• LiveChennai: Third Master Plan for Chennai likely to take six more months (Jul 2026) (accessed 16 Oct 2026)

Related on MOA

• Architects and Interior Designers in Chennai (2026): 10 Studios on MOA
• Authorities Made Easy: Planning Permission and Land Use in Coimbatore (2026 Guide)