Setting standards In the annexe industry

NAPC driving excellence in the UK annexe and garden room industry

Garden rooms and annexes are more popular than ever. Indeed, they’re the go-to solution for those embracing multi-generational living or looking for an ultra-versatile space.

NAPC is here to ensure the highest standards of design, construction, and delivery for all such projects.

We’re a specialist consultancy with a wealth of experience in annexes, mobile homes, and garden rooms. And, working with both private and commercial customers, our nationwide service provides a complete range of planning, drawings, and building control services.

What’s more, NAPC is here to offer advice on all aspects of building governance. So you can be sure your project meets all the legal and technical requirements demanded by planning law.

Local Authorities planning

Setting the highest standards for our industry

NAPC was established to ensure all annexe and garden rooms adhere to strict regulations and controls so that the reputation of the industry is maintained.

Indeed, planning standards for garden annexe buildings are just as stringent as those which apply to standard house builds.  Our aim is to make certain these standards are always achieved.

To this end, we recognise and support architects, designers, quality builders and suppliers who deliver to the NAPC standards so that they can be easily identified and trusted by customers.

By ensuring that consumers are informed of the potential risks and pitfalls involved in annexe and garden room building, we can help homeowners identify and avoid disreputable or inexperienced practitioners and tradespeople.

Our goal is to ensure annexe owners are protected financially and their health and safety are assured. A best practice is shared to help professionals new to the market understand what it takes to build a quality annexe.

We've got the UK covered

The NAPC annexe planning consultancy has a truly nationwide presence.

Collectively, we’ve dealt with over 80% of all local planning authorities. That places us in a unique position since we understand what the local planning authority will expect to see in a planning submission. Not to mention any localised annexe or outbuilding policies they may have adopted.

Our experience has also enabled us to nurture excellent working relationships with case officers. This is vital for us to be able to work proactively during the application process to check and identify any required solutions – and ultimately ensure each proposal satisfies the development plan for a quick, delay-free approval.

A complete suite of services

  1. Background – We begin by taking the time to understand your goals drawing on our expertise to develop the best approach to realise your project.
  2. Research – The first stage is to conduct a site appraisal to determine our design concepts, planning strategy and what the chances of a successful application are.
  3. Drawings – We can either draw up the required plans for you – feeding in our planning research and advising on designs – or work with your preferred draughtsman or architect.
  4. Planning application – We take time to prepare a quality planning application which includes a comprehensive planning statement justifying why the proposal is policy compliant. We are experts at preparing strong cases for granny annexes and garden rooms.
  5. Submission – Post submission, our work continues in monitoring responses and negotiating with the case officer, including guiding you through any changes that might be required.
  6. Outcome – Advise on any conditions and if in the unlikely event permission is refused we can advise on next steps, re-designs and handle any appeal.

Meet the team

Oliver Wright (MSc)
Joss (MSc RTPI)
graduate planner's journey into annexes
Joe (MSc RTPI)


Certificate of Lawfulness| Green Belt| Mobile Homes
AirBnB| Certificate of Lawfulness| Planning Permission

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Annexes are now a popular addition to many family homes to provide additional accommodation.

Mobile Home

NAPC provide a service to help you establish whether your mobile home meets the definition of a caravan and can apply for a Certificate of Lawfulness

Garden Room

Looking to install a garden room at your property? Unsure about planning permission or building regulations for garden rooms?

Talk to a planning expert

By completing the form below, or you can call us direct: