Urban Transformation in Kadıköy: Caddebostan, Suadiye, Göztepe and Bağdat Avenue (2026 Guide)

Kadıköy — especially around Bağdat Avenue — is one of Istanbul's most sought-after residential areas, and also a district with many buildings from the 1970s to 1990s. Together, these facts make Kadıköy one of the most attractive and most sensitive markets for urban transformation (kentsel dönüşüm). ÇET Yapı takes on urban transformation projects in Kadıköy and Istanbul's other prime districts; here is what building owners need to know.

Why Kadıköy is different

According to Endeksa data for January 2026, Kadıköy's average housing price of 150,885 TL/m² is the second highest in Istanbul after Beşiktaş (152,498 TL). High values strengthen feasibility: the sale value created for the same construction cost lets owners improve both their share and the quality of the project.

The Bağdat Avenue corridor — Caddebostan, Suadiye, Göztepe, Erenköy, Bostancı, Fenerbahçe, Feneryolu and Şaşkınbakkal — is where parcel-by-parcel renewal is most intense. Compiled data place Göztepe, Suadiye, Caddebostan and Bostancı at the top of the district's neighbourhoods by number of risky-building reports.

Four constraints that shape the project

1. Plot size

Plots around Bağdat Avenue are mostly small, which makes efficient floor plans, setbacks and especially parking difficult. Acting together with neighbouring plots or thinking at block level can create more efficient and more valuable projects.

2. Zoning rights

Increases in the floor-area ratio have long been debated in Kadıköy; according to press reports, a request to increase it was not approved by the Ministry, while some calculation rules were changed. So the current zoning status must be obtained from the municipality for each plot and used as the basis of the feasibility study.

3. Parking

Parking requirements on small plots mean deeper basements and higher shoring costs. The parking solution should be one of the first lines of the feasibility study.

4. Neighbouring buildings and site logistics

Excavation and shoring in a dense fabric require engineering care for neighbouring buildings. Traffic on Bağdat Avenue and narrow side streets mean site logistics must be planned in advance.

State support: "Yarısı Bizden"

Under the Ministry of Environment, Urbanisation and Climate Change's Yarısı Bizden campaign in Istanbul, owners of homes designated as risky under Law No. 6306 can receive:

For shops/workplaces the grant and loan are 437,500 TL each. The campaign runs until 31 December 2027, and loan repayments start two years after the building permit.

The right process in Kadıköy

1. Risky-building assessment and title annotation
2. Owners' meeting and a decision by a simple majority of land shares
3. Current zoning status and plot-based feasibility (including parking and floor plans)
4. Comparing contractor offers on the same feasibility
5. Notarised flat-for-land contract, building completion insurance/guarantee, permit
6. Construction, occupancy permit and title distribution

What ÇET Yapı offers in Kadıköy

ÇET Yapı has delivered residential, educational and urban transformation projects since 1993; we completed Yeşilköy Ateş Residence as an urban transformation project in 20 months. For your building in Kadıköy we offer:

• Preliminary assessment: first feasibility based on plot, zoning and ownership structure
• Design: architectural, structural and MEP projects; optimisation of parking and floor plans
• Turnkey construction: building completion insurance/guarantee and a clear delivery schedule
• Process support: coordination of risky-building, Yarısı Bizden and permit stages

Contact us to discuss your building around Bağdat Avenue.

Price data are Endeksa district averages for January 2026 and vary by building. Support amounts and zoning information may change; confirm the current position with the relevant authorities.