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Streatham architects.
Britain's No. 1

Streatham Common 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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Lambeth planning application stats

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



UK Average


Resi's planning consultant

Danielle Price

Former Wigan Council Planning Officer
Lambeth's planning officers

Simone Ward, Zoe Bacon, Danielle Smith, C, Kate Hayler, ...

320 Number of applications
27 - 446 days Submit to complete time
274 Granted applications
46 Refused applications
9w 4d Average decision time
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We've had 274 planning applications approved in Lambeth

Ground floor Side and rear

Sunnyhill Road, SW16 2UG

01 Mar '21

Ground floor Rear

Wellfield Road, SW16 2BT

03 Jun '21

Ground floor Side infill

Kingscourt Road, SW16 1JB

14 Jan '22

Ground floor Internal alteration

Kingscourt Road, SW16 1JB

30 Sep '22

Loft Outrigger dormer

Kingscourt Road, SW16 1JB

24 Mar '23

Ground floor Internal alteration

Kingscourt Road, SW16 1JA

04 Mar '21

Ground floor Internal alteration

Kingscourt Road, SW16 1JB

22 Feb '23

Loft Main dormer

Gracefield Gardens, SW16 2TU

10 Aug '18

Ground floor Rear

Leithcote Gardens, SW16 2UY

06 May '21

Ground floor Internal alteration

Brancaster Road, SW16 1NJ

26 May '23

Loft Mansard roof

Wellfield Road, SW16 2BY

16 Sep '22

Ground floor Rear

Gleneldon Road, SW16 2BE

08 Jul '24

Loft Main dormer

Leithcote Gardens, SW16 2UY

23 Aug '23

Ground floor Rear

Woodfield Avenue, SW16 1LE

14 Jun '19

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

Average construction costs for the Streatham area

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



Side Infill




First Floor


Try our Construction Cost calculator

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

Sternhold Avenue

Sternhold Avenue

Completed 2017
Planning authority Lambeth

Southville Road

Southville Road

Completed 2020
Planning authority Lambeth

Gracefield Gardens

Gracefield Gardens

Loft main dormer
Completed 2019
Planning authority Lambeth

Why people near Streatham 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

You'd be with the numero uno in architecture category on Trustpilot

Be more likely get an 'A-okay' with our 90% planning approval rating.

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