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Rainham architects.
Britain's No. 1

Rainham Marshes 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

Get build-ready in as little as four-weeks

A planning team staffed by ex-council officers

Organise your entire project from one place

Havering planning application stats

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



UK Average


Resi's planning consultant

Danielle Price

Former Wigan Council Planning Officer
Havering's planning officers

Guy Fanning, Marnie Smith, Issa Mirza, Karen Leonard, Aidan Hughes, ...

64 Number of applications
17 - 135 days Submit to complete time
48 Granted applications
16 Refused applications
8w 5d Average decision time
See if you qualify for Permitted Development

We've had 48 planning applications approved in Havering

Whole house Internal alteration

Wennington Road, RM13 9TH

20 Apr '21

Ground floor Rear

Lake Avenue, RM13 9SH

18 Jan '22

Garage New build

Beam Avenue, RM10 9BP

27 Nov '19

Two storey Rear

Canberra Crescent, RM10 9YD

14 Jul '21

Two storey Rear

Beam Avenue, RM10 9BJ

06 Jul '21

Two storey Side

Furness Way , RM12 5JH

22 Sep '23

Ground floor Side

Bullbanks road, DA17 6DT

07 Jun '24

Ground floor Side infill

Alford Road, DA8 1PP

11 Jun '24

Garage Conversion

Laburnum Avenue, RM12 4HA

10 Feb '23

Two storey Wraparound

Chestnut Glen, RM12 4HL

15 May '23

Ground floor Rear

Greenwood Avenue, RM10 7DL

13 Sep '21

Ground floor Rear

Greenwood Avenue, RM10 7DL

22 Feb '21

Garden Annex

Saunton Road, RM12 4HQ

15 Nov '22

Ground floor Side infill

Hall Crescent, RM15 4JR

01 Jun '22

Airspace New floor

Park Crescent Road, DA8 3DX

02 Feb '24

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

Average construction costs for the Rainham area

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



Side Infill




First Floor


Try our Construction Cost calculator

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

Upminster Road

Upminster Road

Ground floor rear
Completed 2022
Planning authority Havering

Why people near Rainham 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...


Ground floor 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

Absolutely Brilliant!

I was recommended to use Resi by a friend of mine. I found the whole process an absolute dream. F...


Ground floor Side infill

Sarah Boothe

would highly recommend this company, worked with Alessio on our planning application for our rea...


Ground floor Side and 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 Rainham

BDL Development Ltd
3 reviews
Covers Rainham
11 Resi projects
N-Vico Ltd.
3 reviews
Covers Rainham
8 Resi projects
Kovacs Construction Ltd
7 reviews
Covers Rainham
31 Resi projects
SP Refurbishment & Construction Ltd
1 reviews
Covers Rainham
2 Resi projects
Skyfall Construction Limited
2 reviews
Covers Rainham
5 Resi projects
Zorkun Construction and Project Management
5 reviews
Covers Rainham
9 Resi projects
Check out our vetted builders
Postcodes we serve in and around Rainham

RM1, RM2, RM3, RM4, RM5, RM6, RM7, RM8, RM9, RM10, RM11, RM28

Speak to an expert

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