Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
Nearby projects
Checking nearby planning applications.
About
Verified builder in South Croydon, Surrey.
What customers say
Highlights
"Kosta & Sons recently carried out a general renovation of my house which included fitting new doors and frames, bannisters and spindles, plastering, coving and knocking a separate bathroom and toilet into one room. Kosta & Sons took time to fully understand what I wanted to achieve, were respectful, competitive on price and the work was completed to a high standard. I would use again and recommend to others."
"We recently had a wrap-around extension completed by Kosta and his building team, and we honestly couldn’t be happier with the results. From the very first meeting, Kosta was professional, knowledgeable, and transparent about the whole process. He took the time to explain everything clearly and made sure we understood what was possible within our space and budget."
"Kosta and his team completely refurbished our house. Made downstairs open plan, new kitchen, bathroom, plastering, plastering tiling, electrics and plumbing.New flooring throughout. Kosta is so knowledgeable and has amazing ideas without increasing costs and is on site daily. His team are all outstanding at their work and very respectful and pleasant to have around. We couldn't be more pleased with our up to date 'new' home, our house has been transformed at a very competetive cost. Kosta is a gentleman and a really lovely honest man. Absolutely recommend him 100%"
Detailed reviews
Kosta & Sons recently carried out a general renovation of my house which included fitting new doors and frames, bannisters and spindles, plastering, coving and knocking a separate bathroom and toilet into one room. Kosta & Sons took time to fully understand what I wanted to achieve, were respectful, competitive on price and the work was completed to a high standard. I would use again and recommend to others.
We recently had a wrap-around extension completed by Kosta and his building team, and we honestly couldn’t be happier with the results. From the very first meeting, Kosta was professional, knowledgeable, and transparent about the whole process. He took the time to explain everything clearly and made sure we understood what was possible within our space and budget.
Kosta and his team completely refurbished our house. Made downstairs open plan, new kitchen, bathroom, plastering, plastering tiling, electrics and plumbing.New flooring throughout. Kosta is so knowledgeable and has amazing ideas without increasing costs and is on site daily. His team are all outstanding at their work and very respectful and pleasant to have around. We couldn't be more pleased with our up to date 'new' home, our house has been transformed at a very competetive cost. Kosta is a gentleman and a really lovely honest man. Absolutely recommend him 100%
Rated 5.0★ — above the local average for builders in South Croydon
Across 24 rated builders in South Croydon, the typical rating is 4.7★. We compare against the same businesses a homeowner would find searching for this trade locally.
Trust checks and red flags
Every signal, traced to its origin
Review sources
What's strong, and what to check yourself
This trade isn't licensed in the UK, so anyone can set up. TrustMark is the only Government-endorsed quality scheme for work in and around the home - check whether they're registered, or find a TrustMark-registered business.
Check the TrustMark register