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Rayners Lane architects.
Britain's No. 1

West Harrow 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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Harrow planning application stats

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



UK Average


Resi's planning consultant

Danielle Price

Former Wigan Council Planning Officer
Harrow's planning officers

Deniss Nikandrovs, Ryan Gallagher, Sushila Bhandari, Ben Greene, Hayden Parker, ...

70 Number of applications
28 - 964 days Submit to complete time
56 Granted applications
14 Refused applications
10w 3d Average decision time
See if you qualify for Permitted Development

We've had 56 planning applications approved in Harrow

Ground floor Rear

Romney Drive, HA2 7EG

09 Jul '24

Ground floor Front

Romney Drive, HA2 7EG

07 Sep '21

Ground floor Rear

Capthorne Avenue , HA2 9NF

30 May '22

Ground floor Rear

Capthorne Avenue , HA2 9NF

24 May '22

Two storey Side

Chestnut Drive, HA5 1LY

30 Mar '21

Two storey Side

Chestnut Drive, HA5 1LY

11 Jun '21

Ground floor Internal alteration

Hill Road, HA5 1LE

11 Jul '19

Ground floor Side and rear

Merton Road, HA2 0AB

28 Jan '20

Ground floor Side and rear

Merton Road, HA2 0AB

16 Jun '20

Loft Main dormer

Ellement Close, HA5 1ER

10 May '21

Loft Main dormer

Hooking Green, HA2 6AD

14 Aug '18

Loft Main dormer

Hooking Green, HA2 6AD

03 Jul '18

Ground floor Wraparound

Windermere Avenue, HA4 9RG

01 Nov '22

Ground floor Wraparound

Windermere Avenue, HA4 9RG

06 Oct '22

Ground floor Internal alteration

Rosecroft Walk, HA5 1LJ

02 May '23

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

Average construction costs for the Rayners Lane area

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



Side Infill




First Floor


Try our Construction Cost calculator

Here's just a few projects we've done near Rayners Lane

Why people near Rayners Lane 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

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

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 Rayners Lane

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

AC Design Solutions Ltd, Kwork Architects, Middlesex & Herts Architectural Services, BeforeBricks Ltd, Chiltern Architectural Services, F Line Designs, iPlans

Postcodes we serve in and around Rayners Lane

HA1, HA2, HA3, HA4, HA5, HA6, HA7, HA8, HA9, NW1, NW2, NW10

Speak to an expert

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