Best of Houzz is an annual award from the home-renovation platform Houzz, given to the professionals its community rates most highly for design or customer service.
View award source (opens in new tab)Public evidence profile · Checked May 2026
Costa Builders Group
Planning history
9 public planning applications
Awards & recognition
1 independent award
Trust Score
33out of 100
- Rated 5.0 from 7 reviews
How this score is worked out
Rating5.0 / 5
Review volumeLow · 7
Independent sources1 independent public source
CredentialsNo credentials shown yet
How this score is made up
What customers say22.9 of 60
Independent checks8.6 of 30
Track record1.3 of 10
See the independent checks
- Licences and credentials0 of 10.3
- Ways to reach them3.4 of 3.4
- Reviewed on more than one site0 of 5.1
- Registered company details0 of 5.1
- Photos of their work4.3 of 4.3
- Industry recognition0.9 of 1.7
Verified planning history
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
Trust at a glance
2 checksWhat we can verify about Costa Builders Group
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
Planning history9 public planning applicationsSee detail →Awards & recognition1 independent awardSee detail →
See the full verification checklist for Costa Builders Group →Planning history
Costa Builders Group’s real planning history from public planning applications, showing where they’ve worked and how often schemes were approved. · Active 2017–2026
approval rate89%
planning applications9
approved schemes8
councils worked in4
What they work on
The kinds of project Costa Builders Group has filed planning applications for.
- Loft conversion4
- Rear extension3
- Two-storey extension2
- Extension5
- Driveway / dropped kerb1
- Roof / fenestration4
Where they’ve worked
Each pin is a planning application, coloured by the council decision we found.
Council experience
- Sutton · 4 applications since 2023See planning experience in Sutton
- Barking and Dagenham · 3 applications since 2017See planning experience in Barking and Dagenham
- Bromley · 1 application since 2022See planning experience in Bromley
- Southwark · 1 application since 2019See planning experience in Southwark
Recent planning applications
- Approved73 Beddington Lane Beddington CR0 4THConversion of loft space involving alterations to existing roofline, two dormer extensions at rear and rooflights to front roofslope.
- Approved73 Beddington Lane Beddington CR0 4THConversion of loft space involving alterations to existing roofline, a dormer extension at rear and rooflights to front roofslope.
- Approved73 Beddington Lane Beddington CR0 4THErection of a part one, part two storey rear extension.
- Approved27 Tavistock Road Carshalton SM5 1QLErection of a single storey front extension and extension of vehicle crossover.
- Approved81 Kent House Lane, Beckenham, BR3 1LEHip to gable loft conversion with rear dormer and three front rooflights. (LAWFUL DEVELOPMENT CERTIFICATE EXISTING)
- Refused95 Eastbrook Drive, Rush Green, Romford, Barking And Dagenham, RM7 0YTErection of two-storey side and rear extension.
- Approved42 Freemantle Street London SE17 2JPNon material amendment of planning permission dated 06/8/2018 [Application 18AP1928] for construction of a single storey ground floor side and rear extension to dwellinghouse. The amendment is to extend part of the side wall to create a kitchen with a rectangular shape and to alter the pitch of the roof to the proposed flat roof.
- Approved122 Thatches Grove, Chadwell Heath, Romford, Barking And Dagenham, RM6 5LJApplication for a certificate of lawfulness for a proposed development: Loft conversion involving construction of rear dormer window and two front rooflights.
Show all 9 planning applicationsShow fewer planning applications
- Approved25 Donne Road, Dagenham, Barking And Dagenham, RM8 2JGApplication for a certificate of lawfulness for a proposed development: Erection of single storey rear extension.,,,,- New kitchen space,- Mono-pitched roof,- Extending 3 metres beyond the rear wall of the original house,- Maximum height of 3.4 metres,- Eaves height of 3 metres,- Material to match existing
Independent recognition
Awards & recognition
These are independent third-party awards: recognition earned from review communities and trade bodies, never paid placement.
Source-listed gallery
1 photoPhotos listed on Houzz
These sources do not label every image as completed work. The gallery may include projects, people, logos or certificates, so it does not count as completed-work evidence.
Reviews · public evidence
What customers say
These review totals are published independently on the named public source below, not testimonials this business chose to show. We show the aggregate rating, review volume, and source attribution we hold so you can weigh the evidence yourself.
5.0out of 5
Where these reviews are published
- Houzz7 reviews · 5.0 avg
Local context
Rated 5.0, above the local average for builders in London
Across 2630 builders in London, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
2 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Business and public registers
Public evidence last checked May 2026
About
At Costa Builders Group, we offer a range of architectural drawings and building services in London. With such a wide range of services - including home extensions, loft conversion and house renovation - we are able to oversee a broad range of property projects. Whether you’re in need of a house extension or simply need some plans drawn up, we’re on hand to help. Home Extension Services in London: A home extension is a great way to improve the look of your home, as well as a fantastic way to gain more space. However, if you haven’t looked into home extension services before or you’re new to the world of home improvements, the chances are you’re not entirely sure what to look for. Luckily, this is where we come in. With a fantastic range of architectural drawings and building services, were able to create an extension to be proud of. At Costa Builders Group, we understand what a big undertaking it is to have a house extension added to your property. After all, it isn’t usually something you decide to go ahead with overnight and it requires a lot of planning. That is why we work hard to ensure we’re able to offer the very best house extension services in London. Instead of you worrying about the work being done and whether or not deadlines will be met, everyone at Costa Builders Group puts a great deal of effort and determination into ensuring everything goes to plan. Architectural Drawing Services in London: Before any work on a home extension can begin, it’s vital that the Local Authority is made aware of any plans. This is where our architectural drawing services go hand in hand with our building services. Before any work commences, we produce a full set of professional drawings to showcase the proposed work. These drawings are then used when work begins. All of our architectural drawings are created by true professionals, members of the Costa Builders Group team who are skilled and experienced in architecture. Through understanding the importance of architectural design and building plans, we are able to use this knowledge to benefit your home extension plans.
Services they list
Architectural DesignArchitectural DrawingsCustom Build HomesHome RenovationHouse ExtensionsInterior ArchitectureNew Home Build
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Independent checks
About this business
How long they've really been tradingIndependent sources agree they've been operating since at least 2017. That's 9 years, confirmed across 2 separate sources.
Planning approvals since2017Award-winning since2024
Your own checks
What to check before you hire
Worth checking yourself
Only a few public reviews are shown. Ask for recent references you can contact.
Their public evidence comes from a single source. Look them up on another site before deciding.
No credentials are shown here and the business has not claimed this profile. Ask to see certificates and insurance directly.
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.
Check the TrustMark registerNever 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.
Want an extra legitimacy check? Run the Cowboy Checker on Costa Builders Group before you contact them.
Run Cowboy Checker →Good to know
Common questions about Costa Builders Group
Is Costa Builders Group a legitimate business?
Costa Builders Group has 7 independent public reviews, rated 5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Costa Builders Group?
Costa Builders Group has 7 public reviews, averaging 5 out of 5. The reviews section shows the aggregate rating, review volume, and review source information we hold.
How do I know Costa Builders Group's reviews are genuine?
Costa Builders Group's 7 public reviews come from a named public review source. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show the review source information and aggregate rating we hold rather than selling rankings, so you can weigh the evidence for yourself.
Has Costa Builders Group won any awards?
Costa Builders Group holds 1 independent award, including Best of Houzz winner (2024). These are third-party awards: recognition that has to be won, not self-issued.
Has Costa Builders Group had planning applications approved?
Public council decisions show 8 approved applications for Costa Builders Group across 4 councils, the most recent in 2026. That's an 89% approval rate across 9 decided applications, not a self-declared claim.
What does Costa Builders Group specialise in?
Costa Builders Group lists specialist services including Architectural Design, Architectural Drawings, Custom Build Homes, Home Renovation, House Extensions, Interior Architecture. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
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