The portal also provides application manuals, document checklists, NOC guidance, approved-plan information and details of registered professionals.

Planning permission and building licence are different

Planning permission confirms that a proposed development complies with the Tamil Nadu Town and Country Planning Act, applicable land-use plans and building rules.

A building licence is issued by the concerned local body. Depending on the proposal, an applicant may need both approvals before starting construction.

What services are available?

The portal handles applications connected with:

• Layout and subdivision approval
• Building-plan approval
• Land-use reclassification
• Commencement notification
• Plinth-level inspection
• Last-storey inspection
• Completion certificate

It also routes applications to the appropriate planning authority or local body.

How does the approval process work?

The applicant and registered professional submit the property details, application and digital drawings online.

After the scrutiny fee is paid, the application is routed to the concerned authority. Officials examine the land ownership, approved land use, road access, building rules and required NOCs. A site inspection may also be conducted.

If the proposal complies with the rules and the applicable charges are paid, planning permission and the local-body building licence are issued through the relevant process.

What documents are normally required?

The exact documents depend on the property’s location and the type of development. Common requirements include:

• Sale deed, lease deed or other ownership document
• Patta or TSLR
• FMB sketch
• Encumbrance Certificate
• Survey number and subdivision details
• Site plan and key plan
• Floor plans, elevations and sections
• Road-width sketch
• Applicable NOCs

Adangal, earlier parent documents, legal opinion and additional departmental clearances may be required in certain cases.

Is self-certification available?

The portal provides a self-certification route for eligible small buildings.

The official manual currently describes this facility for Ground or Ground+1 buildings not exceeding seven metres in height, with a built-up area of up to 3,500 sq.ft on a plot of up to 2,500 sq.ft. 

Tamil Nadu has announced plans to extend the self-certification scheme to eligible residential buildings with a built-up area of up to 5,000 sq.ft, covering G+2 or Stilt+3 structures, subject to formal implementation and applicable conditions.

If the property requires an NOC or exceeds these limits, the applicant must follow the normal building-plan approval process.

How long is planning permission valid?

The current DTCP Page states that planning permission is valid for eight years from the date of issue.

Who approves the application?

The approving authority depends on the location, building size, height, use and proposal category.

• CMDA handles planning matters within the Chennai Metropolitan Area.
• DTCP and its subordinate offices handle areas outside CMDA.
• Local bodies can approve eligible proposals under powers delegated to them.

The portal’s Know Your Local Body facility can help applicants identify the correct office.

What should property buyers verify?

A local-body or Village Panchayat approval alone should not be mistaken for DTCP layout approval.

Before purchasing a plot, buyers should verify:

• Planning authority approval number
• Approved layout drawing
• Survey number and subdivision
• Land classification
• Approved land use
• Planning jurisdiction
• Road access and road width

Construction on an unapproved plot or construction that deviates from the sanctioned plan may be treated as unauthorised and can face enforcement action.

The Online Planning Permission Portal is therefore a useful official source. However, its FAQ should be treated as a starting point—not as the only legal authority for making a property decision.

Disclaimer: Planning requirements vary according to the property’s location, land classification, proposed development and subsequent amendments. Owners should verify the latest rules and consult a registered professional or competent authority before purchasing land or starting construction.