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Lewisham architects.
Britain's No. 1

Horniman Museum and Gardens 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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Lewisham planning application stats

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



UK Average


Resi's planning consultant

Danielle Price

Former Wigan Council Planning Officer
Lewisham's planning officers

Sarah White, Cheryl Mumbi, Liam O'Connor, Lucy Bennett, Megan Davies, ...

254 Number of applications
0 - 283 days Submit to complete time
225 Granted applications
29 Refused applications
8w 1d Average decision time
See if you qualify for Permitted Development

We've had 225 planning applications approved in Lewisham

Ground floor Internal alteration

Clarendon Rise, SE13 5ES

02 Mar '20

Ground floor Side infill

Belmont Hill, SE13 5AX

15 Jul '21

Loft Main dormer

Caterham Road, SE13 5AP

31 Jul '20

Ground floor Wraparound

Lee High Road, SE13 5PR

13 Oct '21

Ground floor Rear

Wrights Close, SE13 5HP

11 Nov '20

Loft Main dormer

Wrights Close, SE13 5HP

24 Jun '22

Loft Hip to gable with main dormer

Dermody Road, SE13 5HB

23 Apr '18

Ground floor Side

St Margaret's Passage, SE13 5BS

10 Jul '23

Ground floor Internal alteration

Dacre Place , SE13 5DJ

22 Aug '23

Loft L shaped dormer

Ellerdale Street, SE13 7JU

29 Aug '23

Ground floor Side infill

Algernon Road , SE13 7AS

16 Oct '23

First floor Rear

Algernon Road, SE13 7AT

30 Sep '22

Ground floor Wraparound

Leahurst Road, SE13 5LW

19 Mar '21

Ground floor Wraparound

Leahurst Road, SE13 5LW

04 May '21

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

Average construction costs for the Lewisham area

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



Side Infill




First Floor


Try our Construction Cost calculator

Here's just a few projects we've done near Lewisham

Southbrook Road

Southbrook Road

Ground floor wraparound
Completed 2019
Planning authority Lewisham

Holme Lacey Road

Holme Lacey Road

Ground floor rear
Completed 2022
Planning authority Lewisham

Belmont Hill

Belmont Hill

Ground floor side infill
Completed 2022
Planning authority Lewisham

Why people near Lewisham 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...


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...


Loft Main dormer

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

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