Getting a building plan approved in India can feel like navigating a maze. Municipal bodies across the country — BMC in Mumbai, BBMP in Bengaluru, HMDA in Hyderabad, MCD in Delhi — each have their own submission portals and local bylaws. But the drawings they ask for are largely consistent, rooted in the National Building Code (NBC) 2016 and local development authority rules.
If you're a builder, homeowner, or architect preparing a plan approval submission, here's exactly what you need to get right.
Why Drawings Matter More Than You Think
Municipal reviewers don't inspect your site — they inspect your drawings. If a drawing is missing a required dimension, uses the wrong scale, or doesn't show the setback clearly, your file gets rejected and resubmitted — sometimes weeks later. Getting the drawings right the first time is the fastest path through approval.
The Core Set of Drawings Required
1. Site Plan (Key Plan + Layout Plan)
Every submission starts with a site plan showing the plot's location relative to a major road, the plot boundary with dimensions, and all four setbacks as per local bylaws. Scale is typically 1:500 or 1:200.
The site plan must show:
- North direction
- Plot area and dimensions
- Setbacks on all sides (front, rear, side)
- Road width of the abutting road
- Existing trees or utilities if applicable
2. Floor Plans
A floor plan for every level of the building — ground floor, each upper floor, terrace/roof. NBC 2016 requires:
- Room dimensions and area labels
- Door and window positions with swing direction
- Staircase width and tread/riser details
- Ventilation shaft sizes if any
- Toilet and wet area layouts
Typical scale: 1:100. For large buildings, 1:200 is accepted.
3. Elevation Drawings
Most authorities ask for at least two elevations — front and side. Some (especially in heritage zones or hill stations like Shimla or Ooty) require all four. Elevations must show:
- Total building height from ground level
- Floor-to-floor heights
- Roof type and pitch (flat vs sloped)
- Parapet height
4. Section Drawings
At least one section cutting through the staircase, showing:
- Foundation depth (for load-bearing walls)
- Slab thickness
- Plinth height above road level
- Lintel and sunshade projections
5. Structural Drawing Set (for RCC buildings)
For buildings above ground + one floor (G+1 and above), most municipal bodies now require a structural drawing set stamped by a licensed structural engineer:
- Column layout plan
- Beam and slab reinforcement details
- Footing details
- Staircase structural detail
This is separate from the architectural drawings and requires a licensed structural consultant's digital signature on online portals.
6. Service Drawings (for larger buildings)
Buildings above a certain FAR or floor count (varies by city) also need:
- Plumbing and drainage layout — showing connection to municipal sewer
- Electrical single-line diagram
- Firefighting layout — mandatory for buildings above 15m height as per NBC Part 4
City-Specific Notes
| City | Authority | Portal | Common Gotcha |
|---|---|---|---|
| Mumbai | BMC | dcpr.mcgm.gov.in | DCR 2034 compliance; CRZ if near coast |
| Bengaluru | BBMP / BDA | sakala.karnataka.gov.in | Separate approvals for BBMP limits vs BDA layouts |
| Hyderabad | HMDA / GHMC | tsipass.telangana.gov.in | SRDP norms for roads > 30m width |
| Delhi | MCD / DDA | onlinebuildingplan.mcdonline.nic.in | MPD-2041 setback and coverage rules |
| Chennai | CMDA | tnlrs.com | CRZ and cyclone wind zone loading |
| Pune | PMC | pmc.gov.in | Pune Development Control Rules 2017 |
Always cross-check with your local development authority's building bylaws — NBC is the baseline, but states and ULBs layer additional requirements on top.
Common Reasons for Rejection
- Wrong scale bar — drawings submitted at a scale not matching the printed ratio
- Missing setback dimensions — reviewers need to verify compliance at a glance
- No north arrow or grid lines
- Area statement missing — most portals require a built-up area and FAR calculation table
- Structural drawings not co-ordinated — column positions in structural drawings don't match architectural floor plan
How Long Does Approval Take?
Under most state Single Window systems (e.g., TS-iPASS in Telangana, Karnataka's Sakala), residential approvals are supposed to clear in 15–30 working days for plots under 500 sq m. In practice, first-submission rejections add 2–4 weeks. A clean, complete drawing set submitted on day one is the only real way to control this timeline.
Getting Your Drawings Ready
If you're a homeowner or small developer, you typically won't draw these yourself — you'll work with a licensed architect (mandatory for most submissions) who either drafts in-house or engages a CAD drafter to produce the drawing set.
CAD drafters who specialise in approval drawings know the local conventions — title block formats, standard abbreviations, drawing scales, and how to lay out the area statement table that reviewers look for. A good drafter can turn an architect's hand sketch into a complete submission-ready set in 2–4 days.
If you're an architect looking to outsource the drafting work, or a builder who needs a drafter directly, DraftRoom has verified CAD drafters across India who are familiar with NBC standards and local municipal requirements. You can browse profiles, review past project samples, and hire in minutes.
Ready to get your drawings done? Browse CAD drafters on DraftRoom →
Or if you're a drafter who specialises in approval drawings, list your profile and connect with architects who need your expertise.