YKKE uses rental values from valuation reports gathered for the housing price index and applies a hedonic method. TCMB also began publishing m2 rent estimates by province where data is sufficient.
What changes the buyer's decision?
The index is not a rent guarantee for a named Residence. Aidat, furnishing, licence limits, floor, view and vacancy can move the net result away from the city signal.
Use YKKE as context, then ask for a dated rent opinion for the exact Residence and a separate Aidat figure.
Evidence and checklist
| Buyer moment | Check | Why it matters |
|---|---|---|
| YKKE launch | 2026-02-17 | TCMB began monthly publication. |
| January 2026 YKKE | 34.2% annual | New-tenant rent signal in TCMB blog. |
| January 2026 actual rent | 56.6% annual | CPI rent item can lag fresh market leases. |
| Q4 2025 Istanbul median | 37,000 TL for 100 m2 | TCMB m2 rent estimate, not a residence quote. |
| Residence check | Rent + Aidat + void | Needed before any yield statement. |
How to use this in your shortlist
Start with your goal, budget and timing, then test one Project, one Residence and one Offer against the rule above. If evidence is missing, keep the gap visible instead of replacing it with a claim.
Evidence register
Sources
Source claims checked on 2026-08-24.
- TCMB, New Tenant Rent Index
- Rule date
- published 2026-02-17
- Accessed
- 2026-08-24
- Supports
- YKKE method, January 2026 annual change, Q4 2025 m2 rent levels
- TCMB, residential property price index
- Rule date
- current monthly series checked 2026-08-24
- Accessed
- 2026-08-24
- Supports
- housing price index method and monthly market reading
Terms used in this guide
Every term links to its full definition in the glossary.
