SETBACK SPACES

Last Updated on 2 months by ChennaiRealties

Revised

What are Setback Spaces?

Set Back Spaces for Building Plan Approval mean the open space around the building. It’s the Space across front or sides or rear of a plot between the  building and street alignment or boundary. The height of a proposed building, width of the plot, and abutting road width govern the Set Back Spaces.

Why Setback Spaces?

Set Back Spaces are essential for Building Plan Approval for a healthy and organised community living.It will provide light, ventilation, and privacy to the proposed building under consideration.Neighbours also will continue to enjoy light, ventilation and privacy.Set Back Spaces will provide space for parking of vehicles.In times of emergency, the open space around the building will help movement of fire tenders.Also, Set Back Space may prevent fire from spreading to neighbouring buildings.

Most importantly, Step Back Spaces have a bearing on the floor area that can be constructed.
Because, though Floor Space Index (FSI) of 2 is allowed for Non Residential Buildings, it(FSI) can be achieved only after providing for Set Back Spaces.

Norms for Set Back Spaces

The Tamilnadu Combined Development and Building Rules 2019, has put in place new guidelines on Set Back Spaces for Approval of Building Plans. The norms are different for Non High Rise Buildings and High Rise Buildings.  The Non High Rise Buildings have two sets of guidelines. 1) For Buildings upto 16 dwelling units or 300 squaremeters of commercial buildings. 2)For Buildings exceeding 16 dwelling units or 300 sq meters of commercial buildings. Given below are the details.

1) Set Back Spaces for Non High Rise buildings up to 16 dwellings or up to 300 square meters of commercial building:

Front Set Back Space

Side Set Back Space

Rear Set Back Space

2)Set Back Spaces for Non High Rise buildings upto 18.30 Meters in height exceeding 16 dwelling units and exceeding 300 square meters of commercial building:

Front Set Back Space

Side Set Back Space/Rear Set Back Space

Structures that are allowed in the Set Back Spaces in the case of Non High Rise Buildings

1. 1. 1. Sun-shades not exceeding 0,6m.
      2. Motor room of area not exceeding 2 sq.m. each and height not exceeding 1.8m, without affecting parking and driveway requirements.
      3. In case of Non High Rise Buildings with height upto 9.0m, open single flight or spiral staircase or open double flight staircase so long as such structure do not fall within 0.50 m from the side boundary or 1m. from the rear or front boundary of the site or street alignment.
      4. A compound wall of height not exceeding 2.0m
      5. Watchman booth not exceeding 2.5m.x 2.5m. in size at each gate and height not exceeding 3m.
      6. Gate pillars without or with arches with a min. headroom clearance of 5.50m available atleast to a width of 3.5m.
      7. Meter Rooms for meter boxes or electrical panels along the boundary wall or external walls of the building with the projections not exceeding 0.60 meter from the abutting walls and the open Transformer without affecting parking and drive way, subject to the safety measures stipulated by Tamil Nadu Electricity Board