Built-up Area Calculator Architecture & RERA
Calculate total plinth area including RERA carpet area, internal/external wall thickness, and exclusive balconies.
Built-up / Plinth Parameters
IS 3861 / NBC
sq.ft
200 sq.ft
1,500 sq.ft
3,000 sq.ft
%
5% (Thin Drywalls)
10-12% (Standard RCC)
20% (Thick Brick)
sq.ft
0 (No Balcony)
150 sq.ft
500 sq.ft (Deck)
₹
₹2,000
₹15,000
₹30,000
Total Built-up Area
976 sq.ft
90.67 sq.m
Multiplier Factor
1.22×
Over carpet area
True Carpet Rate
₹7,930
vs ₹6,500 quoted
Base Property Value
₹63.44 L
Excl. taxes/regArea Composition Breakdown
Interactive DistributionComponent-wise Area Breakdown
| Component | Area (Sq.Ft) | Area (Sq.M) | Share (%) | Est. Cost (₹) |
|---|---|---|---|---|
|
RERA Carpet Area (Net Usable)
|
800 | 74.32 | 82.0% | ₹52,00,000 |
|
Internal & External Wall Thickness
|
96 | 8.92 | 9.8% | ₹6,24,000 |
|
Exclusive Balconies & Verandahs
|
80 | 7.43 | 8.2% | ₹5,20,000 |
| Total Gross Built-up / Plinth Area | 976 | 90.67 | 100.0% | ₹63,44,000 |
Regulatory Note: Built-up area (also called Plinth Area) includes the entire perimeter bounded by the outer walls of the apartment unit. Under Section 2(h) of RERA, agreements must quote Carpet Area separately; however, builders frequently use Built-up area for municipal approval drawings and maintenance calculation.