An investment built to last
Building residential blocks and investment duplexes
An apartment building is a different project from a villa: it’s usually an investment measured by return and time, with repeated floors and flats, lifts, tanks, parking and separate meters per unit. Every day of delay costs money, and a mistake in one flat may repeat in all of them. So the owner needs a contractor experienced at this scale, regular engineering supervision, and a contract that ties payments to real progress.
With SaudiContractor you describe your project — city and district, plot area, approximate number of floors, the scope you need, and the status of drawings and permit — and your request reaches contractors who build residential blocks in your city, who contact you with offers to compare.
What building a residential block covers
You can contract the building as a shell only or turnkey. Items that must be clear either way:
Structure and basement
Foundations, any basement and parking, columns, slabs, stairs and the lift shaft.
Shared services
Roof and ground water tanks, pumps, drainage and electrical rooms.
Units
Finishing the flats to a uniform level, with separate electricity and water meters if required.
Lifts
Are lift supply and installation on the contractor, or a separate contract with a specialist?
Safety
Civil-defence requirements — exits, alarms, extinguishers — depending on building type and height.
External works
Facade, wall, outdoor parking and paving, if the contract includes them.
Who is this for?
Landowners building flats to rent or sell, investors building rows of duplexes, and families building a small block where each branch lives on its own floor. In every case repetition is an advantage if the first unit is right — and a big problem if it isn’t.
Our advice is to have an engineering office handle design and supervision from the start, and to base the feasibility study on actual contractor offers rather than general figures. Read about engineering design and supervision.
Decide early whether you’ll sell or rent the units, because it changes many decisions: finishing level, number of bathrooms, separate meters, parking, even the layout of the entrance and lift. A building designed to rent needs durability and easy maintenance more than luxury.
Project stages and rough timing
Timing depends on floors, basement and finishing level, but projects usually pass through these stages:
Design and permit
Architectural, structural, electrical and mechanical drawings, the soil investigation and the permit.
Excavation, basement and foundations
The most sensitive stage, especially with a basement and groundwater in some areas.
The frame floor by floor
Slabs poured in sequence, with the reinforcement inspected before each pour.
Blockwork, services and finishing
Often run in parallel on different floors to shorten the programme.
Commissioning and handover
Lifts, pumps, meters and safety certificates, then handover.
What to prepare before requesting offers
- The land deed and the district’s building conditions: floors, setbacks and parking.
- Complete drawings and the permit, or the stage reached.
- A soil investigation report.
- The scope: shell or turnkey? Lifts inside the contract or separate?
- The target schedule and how the project is funded.
How residential blocks are priced
Usually with a detailed bill of quantities or a rate per square metre per stage. A detailed bill is better for large projects, because it lets you compare quantities and prices line by line and reduces disputes about extra work.
Payments are tied to actual progress approved by the supervising engineer — each slab or finishing stage — with a retention until handover and the warranty period. Large projects commonly include balanced delay penalties and a detailed programme.
When comparing offers, don’t look at the total alone. Put the quantities side by side: an offer may be lower because its steel or concrete is counted below the drawings, or because whole items such as tanks, lifts or safety works are missing. Ask the supervising engineer to review the offers with you before choosing — far cheaper than finding the gap during construction.
Questions to ask the contractor
- Experience at this scale
Which buildings with a similar number of floors have you built, and can I visit them?
- Classification and registration
Are you classified at the right grade for the project size, if required?
- Technical team
Who are the project manager and site engineer, and how many projects do they run at once?
- Schedule and delays
What is the detailed programme, and what are the delay penalties?
- Warranties
What warranty covers the structure, insulation and services?
Warning signs
- A contractor who has never built a project of this size.
- An offer without a bill of quantities or specification.
- Payments far ahead of progress.
- No dedicated project manager or site engineer.
What drives the cost?
- Floors, built-up area, basement and parking.
- Soil conditions and groundwater level.
- The finishing level of the flats and facades.
- Lifts, tanks, pumps and safety requirements.
- The schedule and material prices at the time of the build.
Read the building cost guide.
Residential buildings: FAQ
Do I need a classified contractor for a residential block?
It may be required depending on project size and value. Check current requirements and ask the contractor about their classification.
Shell or turnkey?
Turnkey is simpler to manage; shell then finishing gives you more control over cost and materials. It depends on how much you can follow the project.
Are lifts in the contractor’s contract?
They may be, or under a separate contract with a lift company. Decide early, since the lift shaft affects the structure.
Do I need a soil investigation?
Usually yes for apartment buildings, especially with a basement. It determines the type and depth of foundations.
How do I protect myself from delays?
With a written programme, payments tied to progress, reasonable delay penalties and regular engineering follow-up.
Related services
Helpful guides
Request offers for a residential building
Describe your project once and let contractors in your city contact you with offers.