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Free guide for homeowners

Planning a House Extension?
Start With the Right Advice.

Planning an extension can feel complicated.

Download Hepburn Architects' free Complete House Extension Guide to understand planning permission, permitted development, realistic budgets, likely timescales and the mistakes worth avoiding before you appoint builders.

ARB Registered RIBA Chartered Practice
Planning a House Extension — A Practical Homeowner's Guide by Hepburn Architects
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Practical guidance

What You'll Learn

Clear, useful advice to help you make better decisions from the outset.

01

Planning permission explained clearly

02

Permitted development and what may be possible

03

Realistic project budgets and timescales

04

Extension mistakes that cause delays and unnecessary costs

05

Preparing properly before appointing builders

06

Professional advice from a residential architect

Residential expertise

Advice grounded in real extension projects.

ARB RegisteredRIBA Chartered PracticeResidential extension specialistsDirector-led service with David HepburnNunthorpe Studio
Modern Extension North Yorkshire
Selected extension project

Modern Extension to a Rural Property, North Yorkshire

A sensitive yet bold reinvention of a Victorian stone villa. A single-storey rear extension in charred timber cladding creates a deliberate counterpoint to the original sandstone façade — dark against light, new against old. Full-height glazing and folding doors open the extended living space entirely to the garden, while a crisp stone terrace and lush planted borders mediate between architecture and landscape. Heritage preserved, contemporary life enabled. A quiet confidence in the dialogue between past and present.

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Independent client feedback

Clear advice. Dependable communication.

Great service! David was on time with the plans, and his advice has been invaluable throughout the process.
Verified homeownerView on MyBuilder
David was a pleasure to deal with throughout. He was easy to talk to and nothing was too much.
Verified homeownerView on Checkatrade
Your project starts here

Start Planning Your Extension With Confidence

Get the essential planning, design, budget and timescale advice before making costly commitments.

Download the Free Guide