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Hillingdon architects.
Britain's No. 1

The Battle of Britain Bunker 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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Hillingdon planning application stats

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



UK Average


Resi's planning consultant

Jordan Macann

Former Wandsworth Council Planning Officer
Hillingdon's planning officers

Mitchell Heaven, Eoin Concannon, Helen Harris, Benjamin Hicks, Niamh McMenamin, ...

84 Number of applications
15 - 301 days Submit to complete time
76 Granted applications
8 Refused applications
8w 6d Average decision time
See if you qualify for Permitted Development

We've had 76 planning applications approved in Hillingdon

Ground floor Rear

The Larches, UB10 0DL

23 Dec '22

Ground floor Rear

The Larches, UB10 0DL

09 Dec '22

Ground floor Rear

Churchill Avenue, UB10 0EB

17 Dec '21

Loft Main dormer

Mellow Lane West, UB10 0QU

14 Mar '24

Ground floor Rear

Court Drive, UB10 0BJ

02 Jan '20

Ground floor Internal alteration

Vine lane, UB10 0AY

21 Aug '23

Ground floor Wraparound

Leybourne Road, UB10 9HB

19 Aug '20

Ground floor Wraparound

Leybourne Road, UB10 9HB

03 Dec '20

Ground floor Internal alteration

Sylvana Close, UB10 0BH

13 Aug '19

Ground floor Rear

Corwell Lane, UB8 3DD

27 May '22

Ground floor Wraparound

Corwell Lane, UB8 3DE

19 Feb '21

Garden Annex

Manor Waye, UB8 2BQ

01 Aug '23

Ground floor Rear

Norton Road, UB8 2PT

13 Feb '24

First floor Rear over outrigger

Lansbury Drive, UB4 8SN

29 Apr '21

First floor Rear over outrigger

Lansbury Drive, UB4 8SN

26 May '21

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

Average construction costs for the Hillingdon area

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



Side Infill




First Floor


Try our Construction Cost calculator

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

Why people near Hillingdon 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 R...


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

100% recommend Resi to help you through the struggles

Resi were a breathe of fresh air to work with. They are responsive, proactive, knowledgable and h...


Ground floor Side

I could not be happier with the services provided by Resi, very professional, and extremely helpf...


Loft No dormer

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 Hillingdon

Home Republic Limited
7 reviews
Covers Hillingdon
39 Resi projects
Fittra Construction
Covers Hillingdon
4 Resi projects
N-Vico Ltd.
3 reviews
Covers Hillingdon
8 Resi projects
Kovacs Construction Ltd
7 reviews
Covers Hillingdon
31 Resi projects
4 You Residential Ltd
Covers Hillingdon
6 Resi projects
Lifestyle London Design & Build Ltd
2 reviews
Covers Hillingdon
7 Resi projects
Check out our vetted builders
Other architects in Hillingdon

F Line Designs, The Planning Man, KevCADs, Ace Engineering, Plansing, iPlans, AC Design Solutions Ltd

Postcodes we serve in and around Hillingdon

UB3, UB4, UB5, UB6, UB7, UB8, UB9, UB10, UB11, TW1, TW2, TW3

Speak to an expert

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