G.O.(Ms).No. 154, Amendments to Tamil Nadu Combined Development and Building Rules, 2019
The Housing and Urban Development [UD4(1)] Department issued G.O. (Ms.) No. 154 dated 7 October 2025, amending the Tamil Nadu Combined Development and Building Rules, 2019. The amendments introduce White, Green, Orange and Red industry categories, revise their planning standards, and reduce the minimum road width for White and Green industries in peri-urban village panchayat and village panchayat areas from 7 metres to 6 metres.
What the amendments govern
G.O. (Ms.) No. 154 dated 7 October 2025, issued by the Housing and Urban Development [UD4(1)] Department, changes the development and building requirements for industrial sites under the Tamil Nadu Combined Development and Building Rules, 2019. The notification was ordered to be published in the Tamil Nadu Government Gazette, Extraordinary, dated 7 October 2025.
The amendments replace references to cottage industries with White industries and organise industries into White, Green, Orange and Red categories. The category lists are subject to later categorisation orders issued by the Environment, Climate Change and Forests Department or the Tamil Nadu Pollution Control Board.
Who may be affected
G.O. (Ms.) No. 154 may affect industrial landowners, buyers, developers, businesses and professionals checking whether an industrial proposal satisfies planning requirements. It is particularly relevant to White and Green industries proposed in peri-urban village panchayat or village panchayat areas.
Examples listed as White industries include:
- Assembly of bicycles and other small non-motorised vehicles.
- Blending and packing of tea.
- Fly ash brick or block manufacturing.
- Handloom or carpet weaving using dry processing only.
- Electrical and electronic item assembly using a completely dry process.
- Solar and wind power plants described in the notification.
- Agarbathi manufacturing.
- Fish net manufacturing without dyeing.
- Non-bedded health care establishments such as clinics and dispensaries.
Main planning standards
The amended industrial planning table provides:
- A minimum road width of 7 metres for all four industry categories in corporations, municipalities and town panchayats.
- A minimum road width of 6 metres for White and Green industries in peri-urban village panchayats and village panchayats.
- A minimum road width of 7 metres for Orange and Red industries in those village areas.
- A maximum building height of 18.30 metres and a normally permissible Floor Space Index of 2 for all four categories.
- Category and road based front, side and rear setbacks.
- No restriction on plot coverage.
- On-site parking according to Annexure IV and rainwater harvesting according to Annexure XXII.
- Land reservation for required parks or playgrounds according to rule 41.
Certain incidental structures, including gate pillars, servant rooms, watchman booths, cycle stands and toilets, may be placed in setback spaces if they do not exceed 4 metres in height or occupy more than one-third of the length of any one side of the site.
Height and airport clearance
G.O. (Ms.) No. 154 permits specified water tanks, chimneys and architectural or ornamental features above the normal building height, subject to a ceiling of 30.50 metres from ground level. If the total height exceeds 30.50 metres, a No Objection Certificate from the Airport Authority of India must be provided.
This summary is generated from the source document to help you find what is relevant. The PDF above is authoritative. For advice on your own property, use LandLens One or speak to a qualified professional.
Common questions
Can a White or Green industry use a 6 metre road in a village panchayat area?
Yes. The amended table sets a minimum road width of 6 metres for White and Green industries in peri-urban village panchayat and village panchayat areas.
Does the 6 metre road standard apply to Orange and Red industries?
No. Orange and Red industries require a minimum road width of 7 metres in peri-urban village panchayat and village panchayat areas.
What is the normal maximum height for an industrial building under these amendments?
The maximum building height is 18.30 metres for White, Green, Orange and Red industries. Specified non-habitable features may be permitted up to 30.50 metres from ground level.
Are the industry category lists fixed permanently?
No. The categories in the annexures are subject to categorisation orders issued from time to time by the Environment, Climate Change and Forests Department or the Tamil Nadu Pollution Control Board.
