Christmas closure

We will be closed for Christmas from Wednesday, 24th December 2025 and reopening on Monday, 5th January 2025. Please feel free to enquire during this period and we will respond to you upon our return.

Important notice:
Due to high demand, we are currently fully booked and unable to take on any new work before 27th July 2026.

Home Extension Plans

Home extension plans for your property in London & the South East.

We provide architectural services to home owners wishing to extend their properties in London and the South East, including Planning Applications & Building Regulations drawings.
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"A smooth, efficient service and excellent value for money. Highly recommended."

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Home Extension Plans

Whether you’re planning to create an open-plan kitchen diner, add a new bedroom, or completely remodel your house, our architectural designers can help. 

We provide professional architectural services, including Planning Applications and Building Regulations drawings for residential developments of all types and sizes.

To speak to us about your home extension, call 020 7112 8877, or visit our contact page.

home extension with building regulations dining area with bi folding doors
3D Visualisation of a home extension in Bromley.

Prepare Design

We will then prepare accurate and fully-compliant planning drawings and building regulations drawings for your proposed extension or conversion. We usually complete the initial draft within 10 working days from the date of the measured survey.

Review & Submit

Working with you, we will then refine the design ensuring it meets the ambitions you have for your property. Once you are completely happy, we will submit and manage the application with your Local Authority through to decision.

Initial Consultation

We will discuss your plans and ambitions with you to get a deep understanding of what you're aiming to achieve with your home extension or conversion.

Measured Survey

Once we have a good understanding of your requirements, we will undertake a measured survey of your property to allow us to prepare accurate existing drawings.

Our Home Extension Service

Our team has prepared professional planning applications for home extensions and conversions across London and the South East.

We follow a straightforward process to streamline your planning application and maximise your chances of gaining approval.

Home Extension Services

We offer a range of architectural design services for residential extensions, conversions, and new builds. Select a service to find out more.
an image showing a single storey extension with large bi-folding doors and a timber decked patio

Planning Applications

Professional architectural drawings for planning applications for extensions, conversions and new builds.

a loft conversion that will trigger a party wall agreement

Building Regulations

Detailed Building Regulation drawings and notes for residential extensions and conversions.

Projects we work on

We provide architectural services for a range of residential developments, including:

Example Drawings

View examples of drawings we have completed for home extensions and conversions.

Articles & Posts

Articles and posts from our surveying blog.

18 September 2026

| By: Alex Murrin

Buying a home with mature trees? Learn how trees can affect buildings, drains and future extensions, and when a RICS Home Survey or arboricultural report is needed.

Modern extension on Victorian house.

26 January 2026

| By: Alex Murrin

With so much of the UK's housing stock consisting of Victorian properties, we take a look at how these 100+ year old homes have evolved to meet modern living demands and regulations.

8 January 2026

| By: Alex Murrin

Damp Proof Courses (DPCs) protect homes from rising damp; however, many problems come from bridging, raised ground levels, or misdiagnosis. This buyer-friendly guide explains what DPCs are, how they should be installed, a brief history, retrofit options and their pitfalls, and practical steps if your DPC sits too low or is bridged.

a row of brightly decorated terrace houses with a blue sky

5 January 2026

| By: Alex Murrin

10 of the most common defects found in RICS surveys, why they matter, and how to respond so you can buy with confidence and budget wisely.

Crack in a wall during party wall schedule of condition.

17 December 2025

| By: Laurence Murrin

Cracks in UK homes are common, and a significant cause for concern for property owners. In this article I will look at the main causes of cracking, how to identify problem cracks, and what repairs may be required.

a corroding steel taking during a homebuyer survey greenwich

8 December 2025

| By: Murrins

Damp and mould are among the most common issues affecting London homes. Traditional construction methods, ageing housing stock, and poor property management, combined with the city’s regularly wet climate, make these problems both widespread and recurring.