Extensions, loft conversions, and garage conversions, designed with engineering rigour and delivered with care. Based across Barnet, Camden, and Brent.
Single and double-storey rear extensions that open up your ground floor. We handle structural design, planning applications, and build from start to finish.
Most popularDormers, hip-to-gable, and mansard conversions that unlock your roof space. Ideal for an extra bedroom, home office, or en-suite.
High ROITransform an underused garage into valuable living space. Often permitted development. No planning permission needed.
Fast turnaroundMake the most of the narrow strip beside your home. One of the most effective ways to enlarge a kitchen-diner in a Victorian terrace.
Period homesSteels, RSJs, load-bearing wall removal, and underpinning. Our civil engineering background means we take structural work seriously. Safely.
Our specialismNeed someone to coordinate your build? We manage trades, timelines, and sign-off on your behalf, from planning to practical completion.
AvailableDourados Construction was founded with a straightforward belief: that homeowners in North West London deserve a builder who actually understands what they're building.
With a background in civil engineering, our founder brings structural discipline and technical rigour to every extension and conversion. From beam sizing to project timelines, every decision is considered.
We're a growing team, and we're selective about the projects we take on. That means honest advice, realistic timelines, and no corners cut.
Every project starts with correct structural design. No guesswork, no over-reliance on trades to figure it out on site.
We set realistic programmes and stick to them. You'll always know what's happening and when.
Detailed quotes, clear contracts, and no surprise invoices. You know the cost before we break ground.
We don't hand over until it's right. Our snag list is dealt with before we leave, not after.
A straightforward process with no hidden steps and no pressure.
We visit your home, listen to what you want, and give you an honest view of what's feasible. We'll also tell you honestly whether you need planning permission.
You receive a clear, itemised quote with no vague allowances. We walk you through it before you decide anything.
We coordinate drawings, structural calculations, and planning or building regulations submissions. You don't have to chase anyone.
Your project is managed from groundworks to snagging. We don't consider it done until you're happy with every detail.
We're based in North West London and work primarily across the following boroughs. Not sure if we cover your area? Just ask.
We know the planning offices, the building control teams, and the quirks of the Victorian and Edwardian housing stock in these areas. That means fewer surprises for you.
Tell us what you're thinking. We'll come to you, have a proper look, and give you straight advice. No obligation.