Building your vision

One project at a time

Family-run construction, 42 years of experience - loft conversions, extensions, basements and renovations across London

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About Us

crafting strong foundations

with precision and pride

42 Years of Experience

100s of Happy Clients

Family-Run & Fully Insured

On-Time, On-Budget Delivery

Best Offers

Providing clients a complete service package, Kovacs Construction Ltd. guides clients through every step of the building process, from design to material discussion, budget to site arrangement. They consider the details of a project from the start-up, preparing the way for a smooth and positive construction experience.

Fair Prices

We provide free estimates. Choosing Kovacs Construction Ltd. means that you’ll benefit from top services that are also affordable, with a high return on investment. We work within your budget to ensure you get what you want by using cost-effective strategies.

Quality

Kovacs Construction Ltd. prides themselves with having a strong dedication to the principle that a quality product is its own best form of advertising. Their employees are the best craftsman in the area. Quality construction continues after the close of the project.

On Time

Yes, you read that right. Our promise is that we will complete your project on time and on budget. This is backed by our guarantee.

Our Services

From loft conversions to full renovations, we manage every project start to finish - no subcontractor chaos, just one dedicated team that you can rely on.

What We Build

Loft Conversions

Turn unused space into a bedroom, office, or extra living area.

Kitchen Extensions

Open up your home with a bright, modern extension built around how you live.

Basement

Add valuable living space below ground, done right.

High-end Renovations

Full refurbishments that bring old properties back to life.

General Building & Maintenance

Ongoing property care from a team you already trust.

Why Kovacs ?

Why Homeowners Choose Us.

Family-Run, Personally Involved - Three generations of the Kovacs family working directly on your project, not passed off to strangers.
Turnkey Service - One team, start to finish - design, build and finish, no juggling multiple contractors.
Transparent Pricing - No hidden costs, no surprises at the end.
Track Record - 42 years of building trust across London.

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✦ Testimonials

What Our Clients Say

★ ★ ★ ★ ★

The craftsmanship provided by Kovacs is second to none. It is rare to find a company that pays such close attention to the fine details. Their original quotation was up to plaster finish only, but further in the timescale I have requested for the finishes to be completed by them as well. They didn't cut corners and ensured everything was perfect. If you want the job done right the first time, this is the company to ring.

David Miller

13-03-2026

★ ★ ★ ★ ★

Ben and his team are brilliant. They guide me on design, budget and managed the work beyond expectation. Love my new kitchen space.

Kayla Torres

09-01-2025

★ ★ ★ ★ ★

We recently hired Kovacs construction for a loft conversion, and I couldn’t be happier with the results. From the initial quote to the final walk through, the team was professional, punctual and kept the site clean. They turned what I expected to be a stressful process into a seamless one. Highly recommended

Sarah Jenkins

13-03-2026

★ ★ ★ ★ ★

Kovacs Construction provided outstanding service for our ground floor extension. Their attention to detail and strong communication made the process smooth and stress-free. The result is a stunning addition to our home that we absolutely love.

Lamont Justus

31-12-2024