Approvals · 10 min read
House-plan sanction in Bihar: what to prepare before filing
The ownership papers, drawings and site facts to assemble before your architect opens a building-permission application in Bihar.
Reviewed August 2026
Start with the authority, not the drawing
The approving authority depends on where the plot sits. Inside the city it is Patna Municipal Corporation; in the planning area beyond it, Patna Regional Development Authority; in Danapur, Khagaul, Hajipur or Bihta, the local nagar parishad or panchayat. The setbacks, ground coverage and height the Bihar Building Bye-Laws allow you are read against that authority and your road width, so confirm both before fixing the floor plan. A drawing based on the wrong setbacks is expensive to rescue later.
Ownership and site documents
- Registered sale deed or lease document
- Current ownership or revenue record where applicable
- Site dimensions and approach-road width
- A location plan showing the plot and immediate surroundings
- Any previous sanction, completion certificate or approved subdivision document
The drawing set
Your architect normally prepares the site plan, floor plans, elevations, sections, area statement and service information the online building-permission portal asks for. Structural documents or additional certificates may be requested depending on building size and use — Patna sits in seismic Zone IV, so a structural design and the engineer’s certificate behind it are worth having ready rather than assembling under a query.
- Keep owner names and plot dimensions identical across every document
- Show existing construction and proposed demolition clearly
- Resolve parking, rainwater and service spaces before submission
- Have every required professional sign digitally and on the issued set
Treat fees and timelines as application-specific
Government charges, scrutiny requirements and processing times change by authority and proposal, and the portal calculates them from your own submission. Ask for a written fee estimate tied to your plot rather than relying on an old receipt or a neighbour’s application — a plot two streets away can fall under a different authority. Track the application number and keep every query response in one record.