For London homeowners who want a builder they can actually trust

Your renovation, done right the first time

Kovacs Construction is a family-run team building refurbishments, extensions, loft conversions and new builds across South East London and prime areas.

Book Your Free Site Visit

Free. Takes less than 2 minutes. No obligation.

★★★★★ 4.9 on Houzz (58 reviews) 100+ projects completed 35+ years building experience
4.9Houzz rating · 58 reviews
100+Projects completed
35+Years of experience
Best ofHouzz — Service & Design
“Ben and his team are brilliant. They guided us on design and budget and managed the work beyond expectation. Love my new kitchen space.” — Kayla Torres, Houzz review

Start here

Tell us about your project

It takes under 2 minutes and there is no obligation. Prefer to talk? Call 07711 788515.

Sound familiar?

Renovations go wrong for the same reasons

Builders who go quiet

They quote, then vanish, and you are left chasing for answers.

Costs that keep climbing

The final bill looks nothing like the price you first agreed.

No idea what is happening

Weeks pass with no update and no clear plan for your home.

Everyone claims to be best

It is hard to know who will actually turn up and do the job right.

Why our projects run smoothly

A clear process, from first call to final finish

You get one team that plans the work, agrees the price, and stays in touch until the job is done.

  • Family-run. The people who quote your job are the people who deliver it.
  • Fixed, honest pricing. You know the cost before we start, not after.
  • Regular updates. You always know what is happening in your home and when.
  • Finished properly. We complete the details, not just the big parts.

Simple from the start

How it works

1

Complete the short form

Tell us about your project. It takes under 2 minutes.

2

Book a free consultation

Have a relaxed call with our team about what you want.

3

Get a clear plan and quote

Receive an honest timeline and an accurate price for the work.

No pressure, no hard sell

What you get from the call

Book Your Free Site Visit

Recent work

Projects finished on time and on budget

Real Houzz reviews

What homeowners say about us

★★★★★ 4.9 average from 58 reviews on Houzz.

★★★★★

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. They didn't cut corners and ensured everything was perfect.

David Miller · Full refurbishment · Houzz

★★★★★

We hired Kovacs for a loft conversion and I couldn't be happier. 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 stressful into a seamless process.

Sarah Jenkins · Loft conversion · Houzz

★★★★★

Kovacs 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.

Lamont Justus · Ground floor extension · Houzz

★★★★★

We used Kovacs for the design and build of our side extension, loft conversion and full renovation of our home in Bromley. Extremely professional and transparent throughout. I'd recommend them to anyone looking for an honest, reliable team.

Johnson Green · Side extension & loft, Bromley · Houzz

★★★★★

Kovacs extended my kitchen, worked on my garden and refurbished my bathroom. Friendly and professional, and they dealt with any problems very quickly. My neighbours even mentioned how considerate the builders were.

Indianna Purcell · Kitchen, garden & bathroom · Houzz

★★★★★

The Kovacs team were great to work with. We valued the fact they are a family-run business and take pride in what they do. Their strong communication stood out — they were always reachable and always kept us informed.

Sam Lakeman · Home renovation · Houzz

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Good to know

Questions homeowners ask us

One of our team will call you shortly to briefly discuss your project. There is no obligation and no hard sell.
No. Early is a good time to talk. We can help you shape the plan and understand realistic costs before you commit.
We will tell you honestly. Sometimes we can suggest a different approach that gets you close to what you want for less.
South East London and prime areas including Kensington, Fulham, Richmond and nearby.
Yes. We can manage the whole project from design and drawings through to the finished work, so you deal with one team.
It depends on the project and the time of year. We will give you a realistic start date on your call.

A finished home you love, without the stress

Get an honest plan, a clear timeline and an accurate price from a team that turns up and finishes the job.

Book Your Free Site Visit

Free. Takes less than 2 minutes. No obligation.