Castelnau architects.
Britain's No. 1
Barn Elms may be popular, but wait until people see your new home extension.
We’re Britain’s #1 architectural practice for all-things extending
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Richmond upon Thames planning application stats
Applications in Castelnau are decided by the Richmond upon Thames planning team. Our planning permission win rate is...
89%
vs 85% national average
Catherine Warburton
Former Frome Council Planning OfficerNuriya Qureshi Gonzalez, Harri Mclady, Brad Greening,...
We've had 158 applications approved in Richmond upon Thames.
Average construction costs for the Richmond upon Thames area.
In the last year, the construction costs* we've seen for the Castelnau area are as follows
Rear
£k
Side Infill
£k
Loft
£k
First Floor
£k
More extensions we’ve completed in Richmond upon Thames
Explore designs, build costs and planning applications for more of our extensions.Why people near you love Resi
Over 10200 homeowners have trusted Resi with their home extensions — that’s more than any other architect in the UK.
Feel confident knowing you're with the #1 architect on Trustpilot
Minimise planning risks with our 92% planning approval rate
Stress less with support from your dedicated Account Manager
Keep your project on time & budget with our project management app
Collaborate with your designer on screen-sharing calls
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Ensure quality with state of the art technology including laser scanners & 3D modelling software
Receive a premium service at an affordable price thanks to Resi's proprietary technology & processes
Builders we work with in Richmond upon Thames
Fittra Construction
Flow Property Service Ltd
Other architects in Castelnau
MacAusland Design Ltd, Plans Express, The Plan Hub, Ace Engineering, AA Drafting Solutions, Plansing, Lees Architects LLP
Other locations we do projects around Castelnau
Barnes, Hammersmith, Hammersmith and Fulham, Chiswick, West Kensington, Mortlake, Fulham, Bedford Park, Parsons Green, East Sheen,
Postcodes we serve in and around Castelnau
SW14, SW15, SW16, SW17, SW18, SW19, SE1, SE2, SE3, SE4, SE5, SE6
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Resi Design Ltd. trading as 'Resi' | Company No: 10471125
We are proud to employ architects registered with the Architects Registration Board and were awarded the mark for The Mayor's Good Work Standard for fair pay & conditions, wellbeing, skills, progression, diversity and recruitment.