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Harlington architects.
Britain's No. 1

Ten Acres 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

Garage Conversion

Raywood Close, UB3 5NL

28 Mar '23

Two storey Side

Eton Road, UB3 5HR

28 Apr '23

Ground floor Rear

Carfax Road, UB3 4RB

03 May '22

Ground floor Wraparound

Clarendon road, UB3 1BZ

01 Jul '22

Ground floor Wraparound

Clarendon road, UB3 1BZ

05 Apr '22

Two storey Side

Smaldon Close, UB7 9EH

04 Jul '18

Ground floor Side

Thornton Avenue, UB7 9JY

15 Nov '18

Two storey Side and rear

Thornton Avenue, UB7 9JY

04 May '22

Ground floor Rear

Brabazon Road, TW5 9LT

24 Mar '23

Whole house New build

Rutters close, UB7 9AL

12 Mar '19

Ground floor Rear

Hatton Green, TW14 0ND

21 Apr '20

Ground floor Internal alteration

Furzeham Road, UB7 9DD

07 May '21

Ground floor Rear

Adelaide Road, TW5 9AG

27 Sep '23

Ground floor Rear

Adelaide Road, TW5 9AG

16 Jun '23

First floor Wraparound

Richmond Avenue, TW14 9SQ

23 Jul '20

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 Harlington area

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



Side Infill




First Floor


Try our Construction Cost calculator

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

Why people near Harlington 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

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 Harlington

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

SSD Architecture, Chiltern Architectural Services, Ace Engineering, iPlans, SSD Architecture, KevCADs, Yellow Studio

Postcodes we serve in and around Harlington

UB3, UB4, UB5, UB6, UB7, UB8, UB9, UB10, UB11, HA0, HA1, HA2

Speak to an expert

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