Thatchoor - Chittoor Expressway
NHAI
Overview
The Thatchoor Chittoor Expressway Chennai is a 116.1 km, 6-lane access-controlled NH-716B greenfield corridor by NHAI, running from Keenatampalli near Chittoor in Andhra Pradesh to Thatchoor near Ponneri and Ennore in Tamil Nadu. Approved under Bharatmala Pariyojana Phase 1 at Rs 3,197.56 crore, the alignment runs 41.5 km through Tiruvallur district, much of it inside the Chennai Metropolitan Area's 1,189 sq km planning region governed by CMDA. This page covers the regulatory checks every land buyer must clear before paying.
Regulatory Red Flags Along the NH-716B Corridor in Tiruvallur
Most plot disputes around the alignment trace to one mistake: buying parcels that fall inside both the 70m Right of Way NHAI corridor and CMDA's Agricultural Use zone under the Second Master Plan 2026. Either trap kills your plan. Both together kills the deal.
The Tamil Nadu Town and Country Planning Act 1971 governs every approval inside the metropolitan area, while the National Highways Act 1956 governs land acquisition for the corridor itself. CMDA controls 233,087 surveyed parcels, and the expressway requires 360.5 hectares of acquisition in Tamil Nadu alone.
This table maps the checks before you transfer any money.
3A and 3D notification
What it confirms
Plot is or is not under NH Act acquisition
Where to verify
Tiruvallur district gazette
CMDA zone
What it confirms
Plot use under SMP 2026 (Agricultural, Primary Residential, Mixed Residential, Industrial, Institutional)
Where to verify
cmdachennai.gov.in/LUMaps
Patta and chitta
What it confirms
Seller is recorded owner under TN Patta Pass Book Act
Where to verify
eservices.tnlandregistration.gov.in
Distance from centreline
What it confirms
Plot sits outside the 70m corridor
Where to verify
NHAI alignment drawing for Lot-3 Package-1
FMB sketch match
What it confirms
Survey number boundaries match field measurement
Where to verify
Village Administrative Officer
Check
What it confirms
Where to verify
3A and 3D notification
Plot is or is not under NH Act acquisition
Tiruvallur district gazette
CMDA zone
Plot use under SMP 2026 (Agricultural, Primary Residential, Mixed Residential, Industrial, Institutional)
cmdachennai.gov.in/LUMaps
Patta and chitta
Seller is recorded owner under TN Patta Pass Book Act
eservices.tnlandregistration.gov.in
Distance from centreline
Plot sits outside the 70m corridor
NHAI alignment drawing for Lot-3 Package-1
FMB sketch match
Survey number boundaries match field measurement
Village Administrative Officer
If a plot lies inside the 70m corridor or within the 10.45 km overlap with the Chennai Peripheral Ring Road interchange at Kannigaipair, the seller cannot transfer clean title once gazette notification publishes. Brokers around Pondavakkam and Mambakkam routinely quote layout-plot rates on parcels still classified Agricultural in CMDA records. Walk away unless the patta, FMB sketch and CMDA zone all agree on the same survey number you are paying for.
Growth Corridors from Pondavakkam to Kannigaipair on the Thatchoor Chittoor Expressway
The Tamil Nadu stretch runs Package-IV from km 96.040 at Pondavakkam to km 116.100 at Kannigaipair. Land along the Kannigaipair to Thatchur stretch splits cleanly into pre-construction farmland, mid-corridor transitional villages, and the Kannigaipair junction zone where speculative pricing has already taken hold.
The DPR routes the expressway through Pallipattu, Nagari, Nagalapuram, Uthukkottai, Ponnavakkam, Mambakkam, Tharatchi, Paruthimenikkuppam, Sengattakulam, Vadamadurai, Jayapuram, Maduravasal and Kannigaipair before terminating near Thatchur.
This table shows the corridor's three distinct buyer segments.
Pallipattu, Nagari, Nagalapuram (AP edge)
Status
Package-I civil work underway
Growth Driver
Bangalore-Chennai Expressway interchange near Chittoor
Known Risk
Cross-border patta and CLU delays
Uthukkottai, Mambakkam, Tharatchi
Status
Mid-corridor villages
Growth Driver
Direct NH-716B exit access for Chennai-bound freight
Known Risk
Agricultural zone under SMP 2026
Pondavakkam to Kannigaipair (Package-IV)
Status
Approaches CPRR junction
Growth Driver
Chennai Peripheral Ring Road interchange to Kamarajar Port
Known Risk
Speculative pricing; package was retendered
Corridor / Locality
Status
Growth Driver
Known Risk
Pallipattu, Nagari, Nagalapuram (AP edge)
Package-I civil work underway
Bangalore-Chennai Expressway interchange near Chittoor
Cross-border patta and CLU delays
Uthukkottai, Mambakkam, Tharatchi
Mid-corridor villages
Direct NH-716B exit access for Chennai-bound freight
Agricultural zone under SMP 2026
Pondavakkam to Kannigaipair (Package-IV)
Approaches CPRR junction
Chennai Peripheral Ring Road interchange to Kamarajar Port
Speculative pricing; package was retendered
The most misunderstood stretch is the Pondavakkam to Kannigaipair tail, where the expressway overlaps the CPRR for 10.45 km. Brokers price plots here as if interchange access is guaranteed, but only 8 grade-separated interchanges exist along the full 116.1 km corridor. Pay agricultural rates for parcels not adjacent to a confirmed interchange. Convert pricing optimism into a CMDA zone reading and an FMB sketch overlay before signing anything.
Data Source & Verification
Source
Official NHAI / Bharatmala Pariyojana Lot-3 Package-1 documents and CMDA Second Master Plan 2026
Official Website
nhai.gov.in
Coordinate Reference System
EPSG:4326 (WGS 84)
Geometry Type
Polygon / MultiPolygon
Data Format
Vector (GeoJSON) + Raster Tiles
Last Verified
May 2026
Status
Active