Builder

Kosta & Sons

South Croydon5.0· 174 reviews · 1 source
Trust score
79out of 100
Rating5.0★
Review volume174
Source diversity1 source
VerificationListed

Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.

Planning evidence

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About

Verified builder in South Croydon, Surrey.

Reviews · public evidence

What customers say

5.0out of 5
174 reviews in public evidenceCross-checked across 1 source
CheckatradeSource profile linked

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."

AnonymousCheckatrade5.0 rating

"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."

AnonymousCheckatrade5.0 rating

"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%"

AnonymousCheckatrade5.0 rating

Detailed reviews

Anonymous5.0 / 5 ·

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.

Checkatrade
Anonymous5.0 / 5

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.

Checkatrade
Anonymous5.0 / 5

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%

Checkatrade
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Local context

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.

Public evidence checks

Trust checks and red flags

Public evidence shown
Public review evidence5.0★ from 174 public reviewsCheckatrade
Sources

Every signal, traced to its origin

1 named sources

Review sources

Checkatrade
Public evidence checks

What's strong, and what to check yourself

Strong signals
Rating: 5.0★
Review volume: 174
!Worth checking yourself
!Source diversity: 1 source
!Verification: Listed
Verify at the sourceCheck them 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.

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Smart checks

Before you hire a builder

Never pay a large deposit up front — agree a staged payment schedule tied to completed milestones, and hold a small retention until snagging is done.
Get it in writing: an itemised quote with scope, materials, start and finish dates, and how any changes (variations) will be priced.
Be wary of a cash-only price or pressure to start tomorrow — both are red flags for an unaccountable job.
Ask to see a portfolio of completed work like yours, plus recent references you can contact.
Check the credentials and registrations that matter for this work — and that they are current.
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