Where a terrace looks onto the station yard, that parapet is not a working edge. Ladders and rails stay on the house side of the slab. We do not reach over the boundary. The visit from Madipakkam is free.
The row sits inside, away from that parapet. We do not state a clearance in metres. If overhead wires run along that side, they are marked the way the Tambaram page describes. A house that does not face the yard, including the older streets off Pantheon Road, is an ordinary survey. The tank and a walkway still stay on the slab.
A sheet over a shop, with concrete only behind it, is the Saidapet case. An old brick roof that only looks flat is the Nungambakkam case. A car porch under the upper slab is the Kelambakkam case. A service cable along the front parapet is the Gopalapuram case. A neighbour's pipe on the slab is the Royapettah case. A room in a lodge cannot take the building's roof. A flat cannot take a common roof either. That is the Sholinganallur case. A tenant's bill is not the owner's signature. That is the Taramani case. City-wide module choice is on panels for a Chennai home.
The concrete away from the yard parapet is the only place we draw a row.
A full plant for a Chennai home is described on the solar installation page. The visit is free, and nothing is ordered until you ask. The desk is open monday to saturday, 9:00 am – 7:00 pm.