Apartment Building Plans (Small Residential Blocks)

Typical configurations by plot size

• 30x50 (1,500 sq ft): one 2 BHK per floor, G+3 on stilt, 4 flats, no lift below 15 m height in many cities.
• 40x60 (2,400 sq ft): two 2 BHK per floor, stilt plus 4, 8 flats, lift mandatory in most cities above G+3.
• 50x80 (4,000 sq ft): two 3 BHK or three 2 BHK per floor, stilt plus 4, 8 to 12 flats, two stairs if the authority asks for a second escape.
• Corner and two-side-open plots give every flat two faces of light, which lifts both rent and sale price.

Efficiency, core and light

We aim for 80 percent or more of each floor as flat area, with the lift and stair in a compact core and the corridor no longer than it must be. Every flat gets cross ventilation through a duct or two external walls, two toilets, a utility balcony and a kitchen that is not a corridor. Parking is one car per flat in the stilt, with a two-wheeler zone, meter room and tank room planned in, not left over. Read natural light and ventilation in house design for the principles we apply floor by floor.

Structure, approvals and cost

An apartment block is a framed RCC structure designed from a soil report; our structural engineer sizes the columns for the full height from day one, including a future floor if FAR may rise. Approvals need the sanction drawing, structural stability certificate, fire NOC above the state's height threshold, and RERA registration if flats are sold before completion. Construction costs Rs 1,800 to 2,600 per sq ft of built-up area in 2026 for a standard specification, with the lift, stilt and fire systems adding Rs 15 to 30 lakh over a house of the same area. See building plan approval process and the construction cost calculator.