What is turnkey residential construction?
Turnkey villa or residential construction is a model where the entire process from land to occupancy runs under a single contractor. The architectural project, structural calculations, mechanical and electrical projects, municipal permits, excavation, shell, finishes, and occupancy application — all of it sits with us under one contract.
In Istanbul, many of our clients who own land for a villa choose a turnkey service from an experienced team instead of project-managing on their own. The advantages of this model: time, coordination, and accountability all converge to one point; the price is fixed in writing from the start.
At HausenLab we deliver both the owner-pays-contractor fixed-price model and the build-for-share model. Before signing, we transparently compare the numerical outcome of both options for the client.
Who is it for?
- Land owners building a villa — for personal use or investment
- Investors — those planning small apartment blocks, residences, or boutique housing projects
- Families monetizing inherited land — co-owned plots where a buildable residential plan is needed
- Owners replacing old buildings — demolition and rebuild under urban transformation
What to watch for in residential construction?
New construction is a serious 12–18 month commitment — a wrong move on the first stone can be very expensive later. Things to keep in mind:
- Do not skip the soil report: the site's soil class is the foundation of structural calculation. Projects started without a report often end up requiring later reinforcement.
- Resolve zoning early: floor area ratio, setbacks, and floor limits define the permit process and therefore the project.
- Discipline coordination: architecture, structural, mechanical, and electrical projects should come from one team or coordinated teams, otherwise on-site clashes appear.
- Building inspection firm choice: this is a right you can exercise — reputable, experienced firms cost more but prevent errors that cost more later.
- Milestone-based payment: excavation + shell + finishing + delivery as a milestone-based payment plan should be the standard. Upfront payment models are risky.
- Occupancy process: a building without occupancy is legally at risk; delivery must include the stage where occupancy is filed.
What drives villa construction pricing?
Turnkey villa pricing varies significantly across total building m², number of floors, building type (villa / residential block), and finishing quality (standard / luxury). Luxury finishes can require nearly twice the budget of standard finishes for the same m².
Apartment-block construction is roughly 15% cheaper per m² than detached villas — thanks to efficient plans and standardization. In return, villas carry premium details: custom timber, marble, landscaping, and so on.
The cost calculator on this page gives an instant estimate based on plot m², building m², floor count, type, and finish. The binding quote is issued after a site visit, soil survey, and zoning review.
The HausenLab difference
New construction is one of the services we hold to the highest bar at HausenLab — because over a 12–18 month commitment, the client wants updates from the site every month. That is why we run weekly progress reports and offer a monthly site visit; communication stays open on a WhatsApp group throughout.
In 15+ years we have completed 240+ projects in Beykoz, Sarıyer, Üsküdar, and Çekmeköy. Civil engineers, architects, structural engineers, and a site supervisor are continuously on supervision; subcontractors are selected by us — each one is licensed, experienced, and auditable.
The contract is fixed-price in writing from the start; no extras are added without your written approval. We file occupancy as well — we hand you keys to a legally habitable home.