Tamil Nadu Raises Non-High-Rise Height Cap to 19.5 m and Eases Chennai Building Norms

What the government changed

On Monday, 26 October 2026, the Housing and Urban Development Department issued G.O. (Ms) No. 194. The order amends the Tamil Nadu Combined Development and Building Rules, 2019 (TNCDBR). It contains twenty separate amendments across fourteen pages.

The central change is the height limit for specified non-high-rise buildings. It rises from 18.3 metres to 19.5 metres. Under the revised provisions, stilt plus five floors or ground plus five floors are specified for the relevant building categories, subject to applicable conditions. Buildings above 19.50 m are treated as high-rise.

Secretary Kirlosh Kumar of the Housing and Urban Development Department said the higher limit would allow developers to plan higher ceilings and improve building design.

Commercial zoning on wider roads

The order revises the commercial-use zoning provisions. In Residential and Primary Residential zones of a Master Plan or Detailed Development Plan, a site that abuts and takes access from a road 12 metres wide or more is now deemed to be zoned Commercial. The 2019 rule used 18 metres for this test.

The 12 m test applies in the Chennai Metropolitan Area. Elsewhere in Tamil Nadu, the threshold is 9 m.

Floor space, setbacks and height

The order keeps the existing FSI limits: 2.0 on 12-metre roads, 2.5 on 15-metre roads and 3.25 on 18-metre roads. The extra 1.2 m of height does not by itself add floors, because FSI still caps the total built area.

The revised provisions also set minimum setbacks by building height. The setback rises from seven metres for buildings up to 30 metres tall to 16 metres for buildings above 87 metres. Podiums of up to 15 m are permitted for high-rise buildings, subject to setback and parking norms.

The order states that the revised height limit does not override other applicable development regulations. Individual projects must still comply with the prescribed road-width, FSI and setback requirements.

Parking for IT offices

The order reduces parking requirements for information technology (IT) offices. Car parking moves from one space per 50 square metres of floor area to one space per 75 square metres. Two-wheeler parking moves from one space per 25 square metres to one space per 50 square metres.

Restricted aquifer zone

The amendments permit additional categories of development in Chennai's restricted aquifer recharge area. In the Aquifer Recharge Area's Restricted Development Zone, from Kottivakkam to Uthandi on the city's southern side, buildings can now go up to 14 m.

Completion, accessibility and other changes

Accessibility compliance becomes a condition before a Completion Certificate is issued. The provisions cover persons with disabilities, elderly people and children, and include stricter norms for washbasins and toilet grab bars, with compliance checked before certification.

• Open kitchens may open directly into adjoining living or dining spaces under specified conditions.
• Swimming pool decks and setbacks have revised requirements.
• Building norms for certain assembly halls, cinemas, hotels and recreational facilities have changed.
• EV charging infrastructure is required in specified residential buildings, including fast charging for visitor parking in buildings with more than 50 dwelling units.
• Hotels and lodges must provide dedicated dormitory accommodation for drivers.

What it means for buyers, builders and investors

For buyers, the order changes what can be built, not what has already been approved. A taller non-high-rise building or a commercial use on a wider road will depend on the plot, the zoning category and the approvals that apply to it. Buyers should check the sanctioned plan and the zoning status of a specific site.

For builders, the higher height limit may allow higher ceilings and different layouts. The stated limit on total floor area is unchanged. The tighter accessibility checks before completion certification add a compliance step at the end of a project.

For investors, the most direct change is wider commercial eligibility for sites on 12 m roads in Chennai. The reduced IT office parking may allow commercial developers to use underground and stilt space more efficiently.

Earlier amendments to the same rules

The 26 October 2026 order follows several earlier amendments to the TNCDBR, 2019. These include a self-certified residential building amendment dated 11 August 2025, a self-certified industrial buildings amendment dated 7 October 2025, and a commercial building amendment dated 28 June 2024 under SRO A-13(c)/2024, which allowed commercial buildings of built-up area up to 300 sq m and not exceeding 14 m in height under Rule 20.