Urban Transformation in Bahçelievler: Şirinevler, Yenibosna and Kocasinan Guide (2026)

In recent years Bahçelievler has become the Istanbul district where urban transformation is moving fastest. In dense apartment neighbourhoods such as Şirinevler, Yenibosna, Kocasinan, Siyavuşpaşa and Soğanlı, hundreds of buildings are demolished and rebuilt every year. Under our İnsaya brand, ÇET Yapı is building a residential project in the district. This guide covers the figures, the municipality's schemes and the right process for your building.

Bahçelievler's transformation in figures

In October 2026 the demolition of a building on Barbaros Street in Şirinevler was announced as the district's 6,000th. These figures show that transformation in Bahçelievler is now routine rather than exceptional. For owners, this means the municipality, contractors and demolition firms are experienced, but demand is also high, so planning and choosing the right company matter even more.

Municipal schemes

The main schemes announced by Bahçelievler Municipality:

• Urban Transformation Directorate and neighbourhood liaison offices, where owners can get information locally.
• Parcel merger bonus: a 15% bonus for owners who merge to 600 m² or more (August 2025). The municipality has also said mergers have produced increases of 15% to 25% (January 2026).
• Block-based priority: the municipality says it gives priority to block-based transformation, falling back to parcel-based and finally building-based renewal where that is not possible (October 2026).
• Rooftop rule: allowing rooftop rooms to be used as a normal floor, to prevent floor loss in buildings with older permits.
• Plan notes for estates and cooperatives, so unused building rights can be used.
• Digital permits and tracking, with permit processes online and owners able to track their transformation online.

These rules produce different results on different parcels. The floor area ratio, number of storeys and bonus conditions for yours are on its current zoning status certificate.

Common situations in Bahçelievler

Small parcels and terraced blocks: Much of the district consists of narrow parcels with adjoining apartment buildings. Fitting parking and an efficient layout on one parcel can be hard; merging with neighbours can bring both the bonus and a better design. See our guide to multi-block sites and block-based renewal.

Shops on the ground floor: Most buildings on main streets have commercial ground floors. For shop owners' voting weight and rights in the new project, see our guide to buildings with shops.

Cooperatives and estates: Where one parcel holds several blocks, the rule differs: if all blocks are risky, all shareholders in the parcel decide; if only some are, only their shareholders decide (Implementing Regulation Art. 15/6-7).

Unpermitted floors: Floors added later without a permit do not automatically create rights in the new project, which can affect the area per flat; see will my flat shrink?

Support

Under Istanbul's Yarısı Bizden campaign, owners of risky buildings can receive a TL 875,000 grant, a TL 875,000 loan and TL 125,000 moving support per home; the first workplace gets a TL 437,500 grant and a TL 437,500 loan. The campaign has been extended to 31 December 2027. See our Yarısı Bizden guide for the 1.5x rule and payment plan, and our rent assistance guide.

The right process in Bahçelievler

1. Have a licensed institution carry out a risky building assessment (guide).
2. Get the current zoning status from the municipality and ask about mergers and the bonus.
3. Obtain the list of owners and land shares from the land registry.
4. Get offers from several contractors on the same scenario and compare them (choosing a contractor).
5. Record the simple majority decision by shares in minutes (majority decision guide).
6. Sign a notarised flat-for-land contract with the unit allocation, delivery date and late-delivery penalty in writing (flat-for-land guide).

ÇET Yapı in Bahçelievler

Under its İnsaya brand, ÇET Yapı is building İnsaya Bahçelievler in Bahçelievler: four blocks rising on a podium, with street-facing shops on the ground floor, landscaped terrace gardens above the podium and flat types from 1+1 to 4+1. In neighbouring Güngören we completed Merter İnsaya Residences in 15 months.

For your building in Bahçelievler, estimate your new flat with our urban transformation calculator and contact us through our pre-application form.

Figures are those announced by the municipality and news agencies on the dates cited. For your parcel, the current zoning status applies.