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Whetstone architects.
Britain's No. 1

Totteridge Green 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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Barnet planning application stats

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



UK Average


Resi's planning consultant

Danielle Price

Former Wigan Council Planning Officer
Barnet's planning officers

Karina Conway, Kate Foster, Harvey Penn, Anestis Skoupras, Eva Quille, ...

170 Number of applications
6 - 276 days Submit to complete time
140 Granted applications
30 Refused applications
8w 2d Average decision time
See if you qualify for Permitted Development

We've had 140 planning applications approved in Barnet

First floor Internal alteration

Highwood Avenue, London, N12 8QP

07 Sep '21

First floor Internal alteration

Highwood Avenue, London, N12 8QP

04 Jun '21

Loft No dormer

Oakleigh Road North , N20 0DH

16 Mar '23

Ground floor Internal alteration

Oakhurst Avenue, EN4 8DL

20 Mar '24

Ground floor Rear

Stuart Road, EN4 8XG

20 Dec '18

Ground floor Wraparound

Friary Road, N12 9PB

22 Nov '22

Ground floor Wraparound

Friary Road, N12 9PB

28 Jul '22

Loft Outrigger dormer

Avenue Road , N12 8PY

17 Sep '21

Loft Outrigger dormer

Avenue Road , N12 8PY

09 Sep '21

Ground floor Rear

Cherry Hill, EN5 1BB

27 Apr '21

Ground floor Rear

Longmore Avenue, EN5 1JU

11 May '22

Ground floor Rear

Dale Close, EN5 1BH

21 Aug '20

Ground floor Wraparound

Eversleigh Road, EN5 1ND

11 Jul '24

Ground floor Rear

Richmond Road, EN5 1RX

13 Sep '21

Ground floor Internal alteration

West Walk , EN4 8NT

04 Mar '22

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

Average construction costs for the Whetstone area

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



Side Infill




First Floor


Try our Construction Cost calculator

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

West End Lane

West End Lane

Ground floor rear
Completed 2020
Planning authority Barnet

Ashurst Road

Ashurst Road

Ground floor rear
Completed 2021
Planning authority Barnet

Why people near Whetstone 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.

A dedicated Account Manager to help you through the process's more stressful moments

Keep your project on time & budget with our project management app

Screen-share with your designer, rather than inconvenient home visits

Get intro'd to vetted builders who've been around the (extension) block before

We use bleeding-edge new tech like laser scanners and 3D modelling software

Receive a premium service at an affordable price thanks to our proprietary technology & processes

Builders we work with in Whetstone

Home Republic Limited
7 reviews
Covers Whetstone
39 Resi projects
Fittra Construction
Covers Whetstone
4 Resi projects
BDL Development Ltd
3 reviews
Covers Whetstone
11 Resi projects
N-Vico Ltd.
3 reviews
Covers Whetstone
8 Resi projects
Kovacs Construction Ltd
7 reviews
Covers Whetstone
31 Resi projects
4 You Residential Ltd
Covers Whetstone
6 Resi projects
Check out our vetted builders
Other architects in Whetstone

InkArchitects, Orama Architects Ltd, Gray and Cross Architects, Dring Architects, Kwork Architects, Xami Architecture & Design, Domenech Designs Ltd

Postcodes we serve in and around Whetstone

N1, N2, N3, N4, N5, N6, N7, N8, N9, N10, N11, N12

Speak to an expert

We’re always up for 30 min phone consultations to help you with your project.