Güven Kardeşler · İstanbul
Apartment Project Modification Expert Renovation Service
Looking to modify your apartment project? Sen Güven Kardeşler offers free inspection, fixed written pricing, and a workmanship guarantee to turn your vision into reality. Our experience with Four Seasons and Grand Hyatt ensures a reliable solution.
Free 3D design for this renovation — see it first →Apartment Renovation prices in İstanbul, 2026
Typical range
10.000 – 18.000 ₺/m²
Average range including material and labour. The exact price is given in writing and fixed after a free on-site visit.
What moves the price
- ·Strip-out and haulage needs
- ·Whether wiring/plumbing is renewed
- ·Flooring and paint quality
Some of our apartment renovation work
Real completed projects by Güven Kardeşler.
What's included?
- Free inspection and detailed project analysis
- Fixed written price guarantee
- Workmanship and material quality guarantee
- Expert team with Four Seasons and Grand Hyatt references
- Completion timeline and progress reports
Backed by a crew that has worked on projects like Four Seasons, Grand Hyatt and Istanbul Modern.
Frequently Asked Questions
- How much does a project modification cost?
- We provide a fixed written price after a free inspection. A precise cost is determined after detailed measurements and needs analysis.
- How long does the workmanship guarantee last?
- We offer a 2‑year workmanship guarantee. Any issues arising within this period are resolved free of charge.
- What is the typical timeline for a project modification?
- Depending on the scope, the modification is completed within 2‑6 weeks. A clear schedule is provided at the start.
Planning Apartment Renovation?
Leave your number and we'll call you today. The site visit is free, and the price we then give you is fixed and in writing.
- ✓ Free site visit
- ✓ Written fixed price
- ✓ Your number is never shared
Apartment Project Modification Expert Renovation Service
Call us or message on WhatsApp — we reply the same day.
- Free site visit
- Written fixed price
- Workmanship warranty
15 years, 250+ projects. English-speaking team.