Bathroom Renovation in Ataşehir: Everything You Need to Know
We walk you through the bathroom renovation process in Ataşehir, covering permits, material choices, and cost breakdown.
2026-08-27 · 6 min read
Ataşehir, with its new residential projects and modern lifestyle, sees a high demand for bathroom upgrades. Before starting a renovation, you need clear knowledge of local building characteristics, municipal regulations, and the right workflow. This guide explains every step with practical examples.
1. Initial Assessment & Free Site Survey
Güven Kardeşler conducts a free site survey within 48 hours in Ataşehir. The inspection covers existing plumbing, wall type (e.g., reinforced concrete, steel frame), waterproofing condition, and electrical layout.
- •Exact measurement of bathroom dimensions
- •Analysis of existing plumbing location and capacity
- •Pre‑check of required permits with the district municipality
2. Design Planning & Written Fixed‑Price Quote
After the survey, the architect and interior design team present a 3D concept. The design prioritizes ventilation and waterproofing systems suitable for Ataşehir's high humidity.
- •Material list (tiles, shower cabin, furniture) with brand recommendations
- •Around 40% of the budget is allocated to cabinets and surface finishes
- •Written fixed-price quote and a 2‑year workmanship guarantee
3. Permit Process & Municipality Application
The Istanbul Metropolitan Municipality’s ‘Planning and Building Inspection’ department requires a permit under the ‘Small Business and Renovation’ category for bathroom works. Required documents: design drawings, material technical data sheets, and the survey report.
- •Online permit application form is completed
- •Design drawings are submitted to the municipality within 2 days
- •Permit approval usually takes 5‑7 business days
4. Material Selection & Logistics
In Ataşehir, tiles with 30‑40% water absorption and anti‑slip surfaces are common. For wall waterproofing, acrylic‑based membranes are resilient against the area’s heavy winter rains.
- •Tiles: 30×30 cm or 60×60 cm large format is preferred
- •Shower cabin: Frameless tempered glass reduces leak risk
- •Furniture: Water‑resistant melamine‑faced panels instead of standard MDF
5. Execution Stages & Quality Control
The work is carried out in five main steps: (1) removal of old fixtures, (2) infrastructure renewal, (3) application of waterproofing membrane, (4) tiling and wall cladding, (5) installation of furniture and fittings. After each step, the site supervisor provides photos and measurement reports.
- •Plumbing: PEX pipes are used; 16 mm diameter optimizes flow
- •Waterproofing: 1.5 mm acrylic membrane + two coats of liquid bitumen
- •After installation, a 48‑hour water tightness test is performed
6. Handover, Warranty & Maintenance
At completion, the client receives a detailed user manual and maintenance schedule. Güven Kardeşler provides a two‑year workmanship warranty and material warranties according to the manufacturers’ terms.
- •Warranty covers water leaks, tile cracking, and installation errors
- •One‑year free inspection service (within the first 12 months)
- •Maintenance tip: Use a silica‑based cleaner weekly, deep clean annually
Frequently Asked Questions
- Is a permit mandatory for bathroom renovation in Ataşehir?
- Yes. The Istanbul Metropolitan Municipality requires a ‘Small Business and Renovation’ permit for bathroom renovations exceeding 30 m². Work done without a permit voids insurance and warranty.
- What is the typical duration of a bathroom renovation?
- Including planning and permits, the project finishes in 2‑3 weeks. Permit approval takes 5‑7 business days, and the actual work takes 10‑12 days.
- Which waterproofing system is best for a bathroom?
- Considering Ataşehir’s humid climate, an acrylic‑based membrane combined with two coats of liquid bitumen offers the most durable protection.
- Which cost items have the biggest impact on the budget?
- Cabinets and surface finishes account for roughly 40% of the budget; waterproofing follows at about 15%, and infrastructure changes at around 20%.
Planning a renovation?
Free survey, written fixed price, contract and warranty. No obligation — see the price first, then decide.