House technical passport and BTI measurement: 2026 guide
Actual house area may differ from documents. BTI measurement and technical passport reveal this. 2026 process and why the buyer needs it.
1. What is a technical passport
Technical passport is an official document with all measurements, plan and materials. BTI (Bureau of Technical Inventory) issues it. Contains: total area, floors, room sizes, materials, build date, bathroom count. For a buyer — a «photo snapshot of the house».
2. BTI measurement
BTI measurement — professional survey of real area. Procedure 2-4 hours, cost 300-800 AZN (depending on area). Output — new technical passport. If there's a document mismatch — fines and correction needed.
3. Buyer risks
On purchase there are 3 mismatch risks: 1) Doc says 180 m², reality 220 — unauthorised extension, needs registration (800-3,000 AZN + 3-6 months); 2) Doc 220, reality 180 — seller got «extra» money for 40 m², refund possible; 3) Plan differs — legal risk.
4. 3 pre-purchase steps
1) Ask seller for a copy of the technical passport (often 5-10 years old); 2) New BTI measurement if mismatch suspected; 3) Compare with cadastre extract — same area?
Technical passport and BTI — process
| Service | Time | Cost |
|---|---|---|
| New technical passport | 2-3 weeks | 300-800 AZN |
| BTI measurement | 2-4 hours | included above |
| Document correction | 3-6 months | 800-3,000 AZN |
| Fast track | 1 week | +150-400 AZN |
The technical passport is a real snapshot of the house. Without it, buying is «with closed eyes». 300-800 AZN at this stage protects against 40,000 AZN of risk.
Technical passport checklist
- Copy date — older than 5 years = renewal needed.
- Compare area with the extract.
- Plan diagram — matches the real house.
- Materials — walls, roof, insulation.
- Unregistered extensions — legal risk.
See also: cadastre check, document check, unified registry.
5 houses with a ready technical passport
Message «EV pasport» — we'll send 5 houses with an updated technical passport.