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Longford architects.
Britain's No. 1

Cranford Park 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

Christos Chrysanthou, Rebekah McCullough, Natasha Vernal, Agatha Dutton, 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 Side

The Hawthorns, SL3 0QW

01 Jul '19

Ground floor Side

Thornton Avenue, UB7 9JY

15 Nov '18

Two storey Side and rear

Thornton Avenue, UB7 9JY

04 May '22

Garage Conversion

Raywood Close, UB3 5NL

28 Mar '23

Two storey Side

Smaldon Close, UB7 9EH

04 Jul '18

Ground floor Internal alteration

Furzeham Road, UB7 9DD

07 May '21

Whole house New build

Rutters close, UB7 9AL

12 Mar '19

Two storey Wraparound

High Street, SL3 8NG

23 Sep '20

Two storey Side and rear

High Street, SL3 8NG

22 Feb '21

Ground floor Front

St Clement close , UB8 3ST

27 Jun '23

Two storey Side

Eton Road, UB3 5HR

28 Apr '23

Ground floor Rear

Stanley Green West, SL3 7RE

22 Jul '19

Ground floor Side

Benedict Drive, TW14 8JL

29 Jan '19

Ground floor Side

Benedict Drive, TW14 8JL

11 Jun '18

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 Longford area

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



Side Infill




First Floor


Try our Construction Cost calculator

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

Why people near Longford love Resi

Over 8400 homeowners have trusted Resi with their home extensions — that’s more than any other architect in the UK.

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

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

A wonderful service

A wonderful service that I highly recommend for quality, timeline and cost-effectiveness. Harry M...


Ground floor Side

David Choi

Good professional service. Very fast turnaround on all actions and requests for further informati...


Ground floor Rear

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 Longford

Home Republic Limited
7 reviews
Covers Longford
39 Resi projects
My Extension PM Ltd.
17 reviews
Covers Longford
106 Resi projects
Fittra Construction
Covers Longford
4 Resi projects
N-Vico Ltd.
3 reviews
Covers Longford
8 Resi projects
Kovacs Construction Ltd
7 reviews
Covers Longford
31 Resi projects
4 You Residential Ltd
Covers Longford
6 Resi projects
Check out our vetted builders
Other architects in Longford

SSD Architecture, F Line Designs, KevCADs, Middlesex & Herts Architectural Services, The Plan Hub, Plans Express, F Line Designs

Postcodes we serve in and around Longford

UB7, UB8, UB9, UB10, UB11, HA0, HA1, HA2, HA3, HA4, HA5, HA6

Speak to an expert

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