ePrivacy and GPDR Cookie Consent by Cookie Consent Do I need an architect? Everything you need to know | Resi

Do I need an architect?

How necessary is it to use an architect when undergoing a home extension project? You might be surprised by how useful they can be!

4 min read
May '25 • by Heather

At a glance

Consider hiring an architect for projects like extensions and conversions to ensure safe and legal additions.

Architects help you navigate planning permissions, saving you time and potential costs from refusals.

They can enhance your home's design, considering factors like light and layout for better living space.

If you're unsure where to start, architects offer guidance on budgets, designs, and contractors.

Hiring an architect can lead to a better return on investment and increased chances of planning approval.

Deciding whether to hire an architect often comes down to the complexity of your project and your personal experience with home renovations. However, even for seemingly straightforward projects, an architect's expertise can be surprisingly valuable.

Architects are specialists in maximising your home's potential. With their trained eye, they can identify opportunities within your existing space that you might overlook. Their deep understanding of current planning regulations also means they can navigate the often complex world of local authority permissions, potentially saving you significant time and stress.

If you're on the fence about hiring an architect in 2025, here's a quick guide to help you decide when professional design expertise could make all the difference to your home transformation...

You plan on extending or converting

We would recommend considering an architect if your project involves a...

  • Rear extension
  • Side extension
  • Wraparound
  • Two-storey extension
  • Loft conversion
  • Garage conversion
  • Basement conversion
  • Annex / granny flat

Put simply: if you’re creating new space that’s going to affect the exterior of your property, it’s best to get an architect on board.

While there’s no law requiring you to hire an architect in any scenario, having one present on these big projects helps ensure you create a safe and legal addition to your home.

Why not just use a builder? Some people do allow their contractor to both design and build their project, but this can be a risky approach. Contractors don’t need a license to build homes, nor any formal training. Whereas an architect is held to a statutory code of practise and undertakes years of training before entering the field. Not only this, but they have Professional Indemnity Insurance, meaning their clients are protected.

You want to change the layout of your home

Even for smaller projects, such as knowing down walls or layout changes, getting an architect involved has some benefits. Chances are they’ll be able to spot opportunities you may have missed, along with being able to consider those big picture practicalities. After all, there’s more to designing a home than just rejigging the walls.

  • Door openings
  • Windows and light
  • Piping
  • Vents
  • Room to room views

All of these an architect will be able to consider, making sure your home doesn’t suffer any annoying design flaws.

You need planning permission

Architects aren’t just limited to home design, they can also help secure your project planning permission.

At Resi, alongside providing expert design, we also act as the planning agent for our clients. We handle everything from putting together the paperwork to liaising with the council on your behalf.

By having an architect handle your planning process, you not only avoid any admin headaches but also give yourself the best chance of approval. This could help you save budget in the long run, as reversing planning refusal can be a costly process.

When to consider using an architect during the planning stage

  • You need help meeting permitted development rights guidelines
  • You want to give yourself the best chance of getting first-time approval for a full planning application
  • Your home is a listed building
  • You live in a conservation area
  • You live in a flat or maisonette
  • Your home is affected by other planning restrictions, such as being located in a flood zone or near a site of archaeological interest

Learn more about UK planning policies.

Jules Renovation

You’re not sure where to start

If you find yourself wanting to extend your kitchen or convert your loft but you have no idea where to begin - talk to an architect.

Architects are one of those professionals who get to experience every level of a project. From design to planning, from budgets to contractors, an architect knows it all. This makes them the perfect port of call when starting out.

At Resi, we offer free consultation calls to anyone considering improving their home. Our experts can help advise on everything from timings, budget, design, all the way to potential contractors in your area.

Book a free consultation with our team here.

Summary

While hiring an architect is completely optional, there are a number of benefits to having one on board.

  • Better quality of design often means you get more space for your money and a better return on investment
  • They can manage your planning application on your behalf, often increasing your chances of success
  • They can provide guidance early on and help coordinate your project
  • If you have no idea what’s possible, they can assess your home and provide project ideas for you to explore

How much does an architect charge?

Extensions & what they cost

Related articles

Resi is the UK's largest residential architect

88%

Track record in getting planning approval

9600

Projects undertaken across the UK

40 days

Average time from survey to planning

Trustpilot