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Raynes Park architects.
Britain's No. 1

Cannon Hill Park may be popular, but wait until people see your new home extension, designed by Trustpilot's highest-rated UK architectural practice.

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A planning team staffed by ex-council officers

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Merton planning application stats

Our planning permission win rate for the Merton area is as follows:



UK Average


Resi's planning consultant

Danielle Price

Former Wigan Council Planning Officer
Merton's planning officers

Wendy Wong Chang, Aleks Pantazis, Awot Tesfai, Sarah Tapp, Leigh Harrington, ...

184 Number of applications
5 - 490 days Submit to complete time
168 Granted applications
16 Refused applications
8w 4d Average decision time
See if you qualify for Permitted Development

We've had 168 planning applications approved in Merton

Ground floor Rear

Grand Drive, SW20 0JB

07 Jun '23

Ground floor Rear

Grand Drive, SW20 0JB

08 Dec '22

Ground floor Rear

Clifton Park Avenue, SW20 8BB

05 Apr '22

Ground floor Rear

Aston Road, SW20 8BE

06 Jun '22

Ground floor Wraparound

Amity Grove, SW20 0LJ

05 Oct '23

Ground floor Rear

Church Walk, SW20 9DL

30 May '18

Loft Hip to gable with main dormer

Fairway , SW20 9DN

30 Nov '23

First floor Rear

Amity Grove, SW20 0LQ

14 Oct '22

Garden Annex

Coombe Lane, SW20 0BD

11 Mar '20

Garden Annex

Coombe Lane, SW20 0BD

03 Sep '19

Garden Annex

Coombe Lane, SW20 0BD

19 Jul '21

Ground floor Rear

Coombe Lane, SW20 0BA

12 Dec '19

Garage Conversion

Linkway, SW20 9AT

28 May '21

Ground floor Rear

Westway, SW20 9LW

04 Jun '18

Two storey Wraparound

Bowling Green Mews, SW20 8DJ

29 Nov '23

The above are all actual Resi projects in and around Merton. Projects have been anonymised in accordance with GDPR data regulations.

Average construction costs for the Raynes Park area

In the last year, the construction costs we've seen for the Raynes Park area are as follows:



Side Infill




First Floor


Try our Construction Cost calculator

Here's just a few projects we've done near Raynes Park

Seaforth Ave

Seaforth Ave

Ground floor rear
Completed 2021
Planning authority Merton

Herbert Road

Herbert Road

Garage conversion
Ground floor side infill
Completed 2022
Planning authority Merton

Cecil Road

Cecil Road

Loft main dormer
Ground floor rear
Completed 2023
Planning authority Merton

Why people near Raynes Park love Resi

Over 8400 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...


Ground floor Rear

Alexander Ell

Used to do initial design phase for a loft conversion and internal remodelling. Very helpful in t...


Ground floor Side

The best out there

I have been with Resi now for over a year and they have looked after me well. They have helped me...


Two storey Side

Luisa Wolf

The planning permission (1st of that kind on my neighbourhood) for the extension of my house was...


Loft Main dormer

Peter Spence

So easy! Previous experience with face to face architect not great. But Resi are so easy to deal ...


Ground floor 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...


Ground floor Rear

Patricia Ladly

I had my reservations about getting design plans on-line but the whole process has been very prof...


Loft Main dormer


Very impressed with the service and the attention to detail to my requirements. the team were ver...


Ground floor Rear

Freddie White

Great service, easy to use and very fast results, highly recommend. Easy process from start to fi...


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...


Ground floor Side infill