How to Choose an Architecture Firm in London Without Getting It Wrong

Choosing an architecture firm in London is one of the biggest decisions in any home project, and most people make it based on a nice portfolio and a gut feeling. That's not enough. A few simple checks tell you far more about whether a firm will actually deliver than any set of pretty photos. Here's what to look at before you sign anything. Our clients' reviews:

Check they're actually an architect

Start with the one check almost nobody does. The word "architect" is protected by law in the UK. Only someone registered with the Architects Registration Board can legally use the title.

This matters when you compare quotes, because a cheaper "architectural designer" or "architectural technologist" is a different qualification, and the price gap usually reflects that. It doesn't mean they can't do good work, but you should know exactly who you're hiring. You can check anyone's registration for free on the ARB register before you appoint them. RIBA Chartered status, on top of ARB registration, is a further mark of professional standing worth looking for.

Understand how the fees really work

There's no fixed price scale for architects in the UK. Fees were deregulated decades ago, so firms charge what they choose, which is why quotes vary so much. For a full residential service, fees commonly land somewhere around 10 to 15 percent of the build cost, or a fixed fee for smaller projects.

The percentage matters less than what it covers. Most firms split their work across the RIBA Plan of Work, a set of stages running from first concept through planning, technical drawings and construction. Some quotes cover only the stages up to planning, others carry right through the build. Compare quotes on a like-for-like basis: check which stages are included, how many design revisions you get, and whether the measured survey is charged separately.

Watch for the hidden extras

The headline fee rarely tells the whole story, and this is where budgets slip. Architect fees usually don't include planning application fees, structural engineering, building control, or specialist surveys. On a domestic project these extras can add a few thousand pounds or more.

Ask for a full schedule of anticipated disbursements at the very start, so you're not surprised later. Also confirm VAT status. A firm over the VAT threshold adds 20 percent, so a £12,000 fee becomes £14,400, while a small practice below the threshold may not charge it at all. Knowing this upfront keeps your comparisons honest.

Look for a portfolio that matches your project

A relevant portfolio is the single best predictor of fit. Photos of stunning new-build mansions tell you little if you're extending a Victorian terrace. Look for completed projects that match the type, scale and character of your own home.

If your property is a period house, in a conservation area, or you're doing something structural like removing walls or adding a roof extension, you want a firm that has clearly done that kind of work before. A useful trick is to check your local planning portal to see which firms are repeatedly getting approvals on streets like yours, because that's real evidence, not marketing.

Spot the warning signs

A few things should make you pause. A firm working with no written contract is a real risk, because a proper appointment document protects both sides. So is any request for the full fee upfront: stage payments linked to what's delivered are standard practice, and 100 percent upfront is a serious red flag.

Vagueness is the other warning sign. A good firm will happily explain its process, how it keeps you informed, and exactly what you get at each stage. If a firm gets evasive when you ask straightforward questions about fees or process, that tells you something about how the whole project will run.

Meet a few, then trust the fit

The sensible approach is to meet at least three firms before deciding, and compare them on the same basis. Check their registration, read their fee proposals properly, look at relevant work, and read a few independent reviews.

Then, once the checks are done, trust how you get on with them. You'll be working together for months, through decisions and the odd problem, so clear communication genuinely matters. The best firm for you is the one that passes the practical checks and explains things in a way that makes sense to you. Get both right, and you've found a partner rather than just a supplier.