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Thornton Heath architects.
Britain's No. 1

Grangewood Park may be popular, but wait until people see your new home extension.

Gracefield Gardens, Lambeth
Lebanon Road, Croydon
Pollards Hill South, Croydon
Sternhold Avenue, Lambeth
Lamberhurst Road, Lambeth
Clifford Road, Croydon
Queen Mary Road, Croydon
The Penge House, Bromley
Fernlea Road, Merton
Tooting Terrace, Wandsworth
Sellincourt Road, Wandsworth
Sidney Road, Bromley

We’re Britain’s #1 architectural practice for all-things extending

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Croydon planning application stats

Applications in Thornton Heath are decided by the Croydon planning team. Our planning permission win rate is...

92%

vs 87% national average
Resi's planning consultant

Catherine Warburton

Former Frome Council Planning Officer
Croydon's planning officers

Laura Field, Alexander Green, Chris Stacey,...

238 Number of applications
218 Granted applications
20 Refused applications
0 - 372 days Submit to complete time
8w 1d Average decision time

We've had 238 applications approved in Croydon.

Approved 10 Dec '24
Ground floor rear 85A Grange Park Road Thornton Heath CR7 8QF
Approved 25 Oct '24
Ground floor rear & side infill 3 Carew Road Thornton Heath CR7 7RF
Approved 19 Jul '24
Ground floor rear 60 Bridport Road Thornton Heath CR7 7QG
Approved 07 Dec '23
Ground floor internal alteration & rear 19 Kilmartin Avenue Norbury London SW16 4RE
Approved 23 Jan '23
Ground floor rear 15 Norbury Avenue Thornton Heath CR7 8AH
Approved 05 Dec '22
Unknown extension type 78 Totton Road Thornton Heath CR7 7QR
Approved 05 May '22
Ground floor rear 38 Braemar Avenue Thornton Heath CR7 7RG
Approved 24 May '21
Ground floor front and loft main dormer 69 Nutfield Road Thornton Heath CR7 7DQ
Approved 06 May '21
Ground floor rear 98 Kilmartin Avenue Norbury London SW16 4QZ
Approved 24 May '21
Loft main dormer 98 Kilmartin Avenue Norbury London SW16 4QZ
Approved 22 Dec '20
Unknown extension type 68 Queens Road Croydon CR0 2PR
Approved 01 Mar '19
Unknown extension type 12 Buxton Road Thornton Heath CR7 7HG
Approved 11 Sep '25
Loft main dormer 1 Penshurst Road Thornton Heath CR7 7EE
Approved 25 Jan '23
Garden annex 15 Norbury Avenue Thornton Heath CR7 8AH

Average construction costs for the Croydon area.

In the last year, the construction costs* we've seen for the Thornton Heath area are as follows
Rear

£k

Side Infill

£k

Loft

£k

First Floor

£k

*Costs are up to ‘first fix’ and exclude VAT

More extensions we’ve completed in Croydon

Explore designs, build costs and planning applications for more of our extensions.

Why people near you love Resi

Over 10400 homeowners have trusted Resi with their home extensions — that’s more than any other architect in the UK.
Came across Resi in 2017 and have to say their service has been exceptional on all fronts. Prompt...
Ann Loft Hip To Gable With Main Dormer
Alexander Ell Used to do initial design phase for a loft conversion and internal remodelling. Very helpful in t...
Alexander Ground Side
Luisa Wolf The planning permission (1st of that kind on my neighbourhood) for the extension of my house was...
Luisa Loft Main Dormer
Peter Spence So easy! Previous experience with face to face architect not great. But Resi are so easy to deal ...
Peter Ground Rear
Resi are a great investment! Resi have been great. We knew we needed help and saw a couple of “all in” firms before we found...
Helena Ground Rear
Patricia Ladly I had my reservations about getting design plans on-line but the whole process has been very prof...
Patricia Loft Main Dormer
STEVE BOWMAN Very impressed with the service and the attention to detail to my requirements. the team were ver...
Steve Ground Rear
Freddie White Great service, easy to use and very fast results, highly recommend. Easy process from start to fi...
Freddie Whole House New Build
Absolutely Brilliant! I was recommended to use Resi by a friend of mine. I found the whole process an absolute dream. F...
Ayisha Ground Side Infill
100% recommend Resi to help you through the struggles Resi were a breathe of fresh air to work with. They are responsive, proactive, knowledgable and h...
Kevin Ground Side

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Builders we work with in Croydon

D2D Projects Limited

5.0
2 reviews
Covers Thornton Heath
10 Resi projects

Lifestyle London Design & Build Ltd

5.0
2 reviews
Covers Thornton Heath
12 Resi projects

N-Vico Ltd.

4.0
5 reviews
Covers Thornton Heath
9 Resi projects

Kovacs Construction Ltd

4.0
7 reviews
Covers Thornton Heath
37 Resi projects

Home Republic Limited

4.8
8 reviews
Covers Thornton Heath
46 Resi projects

Flow Property Service Ltd

Covers Thornton Heath
3 Resi projects
Other architects in Thornton Heath

The Planning Man, JEJE Studio Ltd., ADL Design & Build Ltd, Sufair Ltd, AA Drafting Solutions, MTA (Michael Trentham Architects), AJK Architecture + Design Ltd

Postcodes we serve in and around Thornton Heath

CR7, CR8, CR9, SM1, SM2, SM3, SM4, SM5, SM6, SM7, KT1, KT2

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