Question 1

What is the Chennai CMDA master plan land zone system, and who administers it?

Accepted Answer

The Second Master Plan 2026, notified in the Tamil Nadu Government Gazette on 2 September 2008, assigns R1, Mixed Residential, Commercial, Industrial, Agricultural, and Open Space designations across 1,189 sq km. CMDA, constituted under the TNCP Act 1971, administers it.

Question 2

Can I build a house on agricultural land inside CMDA limits without a zone conversion?

Accepted Answer

No. Agricultural land within the CMA requires a formal CLU reclassification from CMDA, including a gazette-published variation notification. CLU charges are 3% of stamp valuation value. A pending application is not an approval. Construction cannot legally begin until the gazette notification is in hand.

Question 3

What is the difference between CMDA and DTCP approval for a Chennai plot?

Accepted Answer

CMDA governs all development within the original 1,189 sq km CMA. DTCP governs areas outside it. DTCP approval for a plot inside CMA does not create legal compliance. Panchayat approval alone is never valid here, and banks verify the correct authority before sanctioning any loan. Use the 1acre Premium Chennai Masterplan layer to confirm whether your survey number falls inside CMDA limits before committing.

Question 4

What FSI is permitted in primary residential R1 zones in Chennai?

Accepted Answer

Standard buildings up to 15 metres in R1 zones carry an FSI of 1.5 under Tamil Nadu Combined Development and Building Rules (TNCDBR) 2019. Multi-storey developments on larger amalgamated plots can qualify for 2.5 to 2.75, subject to road width, setbacks, and open space compliance.

Question 5

Are unapproved layouts in Chennai eligible for regularization in 2026?

Accepted Answer

CMDA's regularization scheme under GO 78 covers only plots registered on or before 31 December 1989. No gazetted extension exists as of early 2026. The Madras High Court (2025:MHC:426) confirmed regularization is not an automatic right. Demand a gazette notification number, not a broker's verbal assurance.

Question 6

What documents must I verify before buying a plot in the Chennai CMDA masterplan area?

Accepted Answer

Verify the Patta, Chitta, Adangal, TSLR or Field Measurement Book (FMB) sketch, CMDA layout approval number, Encumbrance Certificate for 30 years, and the full parent document chain. If no CMDA approval number exists for a post-1989 layout, get independent legal advice first.

Question 7

Which Chennai corridors have the strongest CMDA masterplan zone backing for residential investment?

Accepted Answer

The Second Master Plan 2026 designates residential zones near Tiruporur on OMR, Sriperumbudur on GWT Road, and satellite towns at Thiruvallur and Gummidipoondi. Guduvanchery and Urapakkam on GST Road also carry residential designations. Still verify zone classification parcel by parcel.

Question 8

Can I see the Chennai Masterplan along with all the survey numbers?

Accepted Answer

Yes. On the 1acre map, you can load the Chennai Masterplan layer and the Survey Number layer together. This lets you see, at any location, both the masterplan zone and the individual survey numbers overlaid on satellite imagery — so you know exactly which zone your survey number falls in before committing. Both layers are available with a Premium subscription.  Subscribe to 1acre Premium .

115 Verified lands & plots for sale in the Chennai CMDA Masterplan region.