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Headstone architects.
Britain's No. 1

Headstone Manor & Museum may be popular, but wait until people see your new home extension, designed by Trustpilot's highest-rated UK architectural practice.

Save up to 50% off design + planning costs with Resi Ready

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A planning team staffed by ex-council officers

Organise your entire project from one place

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 Internal alteration

Cedar Drive , HA5 4DE

24 Nov '22

Garage Conversion

Anselm Road, HA5 4LJ

23 Apr '20

Ground floor Rear

Anselm Road, HA5 4LJ

25 Sep '23

Loft Main dormer

Anselm Road, HA5 4LJ

03 Apr '20

Ground floor Wraparound

Albert Road, HA2 6PS

20 Sep '19

Ground floor Rear

Harley Road, HA1 4XF

01 Jul '19

Loft Main dormer

Hooking Green, HA2 6AD

14 Aug '18

Loft Main dormer

Hooking Green, HA2 6AD

03 Jul '18

First floor Side and rear

Kingsfield Avenue, HA2 6AR

26 Nov '20

Ground floor Wraparound

Kingsfield Avenue, HA2 6AR

27 Aug '21

Ground floor Wraparound

Kingsfield Avenue, HA2 6AR

13 Jul '21

First floor Side and rear

Kingsfield Avenue, HA2 6AR

12 Oct '20

Ground floor Rear

Lorne Road , HA3 7NJ

01 Nov '21

Ground floor Rear

Old South Close, HA5 4TW

22 May '20

Ground floor Rear

Old South Close, HA5 4TW

02 Jan '20

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 Headstone area

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



Side Infill




First Floor


Try our Construction Cost calculator

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

Why people near Headstone 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 Headstone

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

Structice Engineering Consultants Ltd, Ace Engineering, Middlesex & Herts Architectural Services, Plansing, AC Design Solutions Ltd, KevCADs, iPlans

Postcodes we serve in and around Headstone

HA1, HA2, HA3, HA4, HA5, HA6, HA7, HA8, HA9, NW1, NW2, NW5

Speak to an expert

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