amanbh997/skills-architects/country-india

Country: India

Architectural code and regulatory reference for projects located in any Indian state or Union Territory. Activate this skill whenever the project location is in India, when an Indian city is referenced, when Indian rupee currency or area-units like "square feet built-up" / "carpet area" / "lakh" / "crore" appear, or when codes like NBC, ECBC, or IS series are mentioned.

1. Regulatory Hierarchy

India operates as Archetype B (National Model + State Adoption), with significant deviation between national framework and state/municipal enforcement.

1.1 Authority Stack

LEVEL 1 -- NATIONAL FRAMEWORK (advisory, except where state has adopted)
  - Bureau of Indian Standards (BIS) -- publishes NBC 2016 + IS codes
  - Ministry of Housing and Urban Affairs (MoHUA) -- urban policy
  - Bureau of Energy Efficiency (BEE) -- ECBC 2017, ECBC-R 2018
  - Ministry of Environment, Forest and Climate Change (MoEFCC) -- EIA notifications
  - National Disaster Management Authority (NDMA) -- guidelines
  - Directorate General of Civil Aviation (DGCA) -- height NOC near aerodromes
 
LEVEL 2 -- STATE FRAMEWORK (legally binding)
  - State Town & Country Planning Department -- planning laws
  - State Fire Services -- Fire NOC, periodic renewal
  - State Pollution Control Board -- Consent to Establish/Operate
  - State Electricity Regulatory Commission -- electrical sanction
 
LEVEL 3 -- LOCAL FRAMEWORK (legally binding, project-specific)
  - Municipal Corporation OR Development Authority -- Building Permit
    + MCGM (Greater Mumbai), MCD (Delhi), BBMP (Bangalore), GCC (Chennai),
      GHMC (Hyderabad), KMC (Kolkata), PMC (Pune), AMC (Ahmedabad),
      MCC (Chandigarh), etc.
    + MMRDA, DDA, BDA, CMDA, HMDA, KMDA -- jurisdictional Development Authorities
  - District Magistrate / Collector -- land use, NA conversion
  - Local Fire Services -- on-site NOC
 
LEVEL 4 -- PROJECT-SPECIFIC CLEARANCES
  - EC (Environmental Clearance) for >20,000 sqm built-up (EIA 2006 + amendments)
  - Aviation NOC if within 20-km of aerodrome reference point
  - Heritage NOC if within heritage precinct (ASI/SHA)
  - Coastal Regulation Zone (CRZ) clearance per CRZ 2019
  - Forest clearance if on forest land
  - Defence/Army NOC if within designated zones
  - RERA registration if >500 sqm or >8 apartments (RERA Act 2016)

1.2 NBC 2016 Status

The National Building Code of India 2016 (NBC 2016, BIS SP 7:2016, two volumes, ~3,500 pages) is advisory at the national level. It becomes binding only when:

• A state government formally adopts it (most have, fully or partially)
• A municipal corporation references it in its Building Bye-Laws (most major cities do)
• A specific clause is cited in a court order or RERA ruling

NBC 2016 is organized in 12 Parts (P1 to P12), with several Parts subdivided into Sections:

1.3 Code Adoption Status by State

When advising on a specific project, always confirm: (i) which state, (ii) which city's Municipal Corporation or Development Authority, (iii) date of pending Building Permit application (as code version in force depends on application date).

2. Building Code Core Requirements (NBC 2016 Part 3 + Part 4)

2.1 Occupancy Classification (NBC 2016 Part 4, 3.1)

NBC defines 9 Occupancy Groups (A through I):

2.2 Height & Area Limits

NBC 2016 has no single height-vs-construction-type table equivalent to IBC Table 504; instead, height/area limits are embedded in Part 4 (Fire), Part 3 (Development), and state DCRs.

Critical thresholds:

2.3 Setback & FAR (Indicative -- state DCR governs)

FAR (Floor Area Ratio) in India is computed differently across states. Some include balconies/lifts, others exclude. Always confirm with the local DCR.

Indian DCRs typically also limit:

• Ground Coverage (separate from FAR): often 25-50% residential, 50-60% commercial
• Setbacks: front 3-12 m, side 3-6 m, rear 3-6 m (depends on plot size + abutting road)
• Height: implicit via FAR + setback + ground coverage interaction; explicit only for special zones (heritage, aviation, defence)
• Parking: 1.0-2.0 cars per dwelling (city-dependent); commercial = 1 per 50-100 sqm GFA; ECS = Equivalent Car Space

3. Fire Safety (NBC 2016 Part 4 + IS 15683)

3.1 Travel Distances

NBC 2016 Part 4 Table 7: