Starting an architecture practice? The Insurance You Need to Launch (2026)

Reviewed by Apex Insurance Brokers · Last reviewed 2026-08-05

Deciding to set up on your own is a genuine milestone. After years of working under someone else's stamp, you're taking responsibility for your own projects, your own clients and your own name over the door. It's exciting — and it comes with a short list of things that have to be in place before you can properly open for business. Insurance is one of them, and for architects it's tied directly to your right to practise.

This guide walks through the setup in the order it actually happens: the regulatory step that comes first, why professional indemnity sits at the heart of everything, the other covers a new practice should consider, and a practical checklist to run through before you take on your first commission.

First things first: ARB registration and where insurance fits

In the UK, the title "architect" is protected in law under the Architects Act 1997. You cannot describe yourself as an architect — on your website, your headed paper, or a planning application — unless you're registered with the Architects Registration Board (ARB). This is the non-negotiable first step, and it's separate from your professional membership of the RIBA.

The ARB maintains the statutory Register of Architects and publishes the Architects Code: Standards of Professional Conduct and Practice. That Code is where insurance enters the picture. It requires you to have adequate and appropriate insurance arrangements in place to cover you, your practice and your clients — in practice, professional indemnity insurance. So PII isn't just commercially sensible; holding it is part of meeting your professional obligations as a registered architect.

It's worth being clear about the distinction between the two main bodies, because new practice owners often blur them:

• ARB registration is the statutory requirement. You register as an individual to use the protected title, and the Architects Code's insurance expectation applies to you.
• RIBA Chartered Practice is a separate, voluntary route run by the Royal Institute of British Architects. Becoming a chartered practice lets you use the RIBA crest and brings its own membership criteria, including holding adequate PII. It's a badge of quality many clients recognise, but it isn't a legal condition of trading.

On timing: because your PII needs to respond to work from the moment you start advising clients, arrange it so it's live on or before your first day of trading — the day you take instructions, issue a fee proposal, or start drawings for a paying client. You don't want a gap between opening your doors and your cover incepting.

Professional indemnity: the cornerstone, from day one

Of everything on this page, professional indemnity insurance (PII) is the cover to get right. It's the one your regulator expects, the one your clients and their lenders will ask about, and the one that protects the practice you've just built from a single costly mistake.

What it actually covers. PII responds when a client alleges that your professional work caused them a financial loss — a design error, a specification that didn't perform, a missed detail, negligent advice, or a drawing that led to abortive work on site. It covers the cost of defending the claim as well as any damages or settlement, which matters because defence costs alone can be substantial even when you've done nothing wrong.

Why "claims-made" changes how you think about it. PII is written on a claims-made basis. That means the policy that responds to a claim is the one in force when the claim is made against you — not the one you held when you did the work. Two consequences follow, and both matter for a new practice:

• Continuity is everything. A claim on a building you designed in year one might not surface until year five. As long as you've kept your PII running continuously in the meantime, the current policy responds. Let it lapse and that protection disappears — so this isn't a cover you renew casually or drop in a quiet year.
• Run-off is the other side of the coin. When you eventually wind the practice down, retire, or merge, you stop buying new cover — but claims can still arrive for years afterwards, because your professional liability doesn't end when you close the doors. "Run-off" cover keeps a policy in place to catch those later claims. You don't need to buy it on day one, but it's worth knowing it exists so the end of the practice is as well-planned as the start.

Retroactive date. When you're moving from employment or a partnership into your own firm, ask your broker about the retroactive date on your new policy — it defines how far back the cover reaches for past work. For a genuine start-up with no prior practice, this is straightforward; if you're carrying over any work done under your own name, flag it so cover is set up correctly.

Tell us about your practice and we'll structure PII around it →

The other covers a new firm should weigh up

PII is the foundation, but it isn't the whole picture. A few other policies are worth considering as you set up — some are legal requirements the moment your circumstances change, others are simply sensible protection for a young business. Here's an honest read on each, without overstating what's compulsory.

Employers' liability (a legal requirement once you employ)

The moment you take on staff — even one part-time employee or a Part 1 or Part 2 assistant — employers' liability insurance is required by law under the Employers' Liability (Compulsory Insurance) Act 1969, with a minimum limit set by the legislation. It covers claims from employees who are injured or made ill through their work. If you're launching as a genuine sole practitioner with no employees, it may not apply yet — but put it on your radar for the day you make your first hire, because there are penalties for not holding it once you should.

Public liability

This covers injury to a member of the public or damage to their property arising from your business activities — a client tripping in your studio, or something going wrong during a site visit. It isn't a legal requirement, but if clients, contractors or visitors come to your premises, or you're regularly on site, many practices treat it as essential day-one cover. Some clients and public-sector frameworks will also ask you to hold it as a condition of appointment.

Cyber

A modern architecture practice runs on data — CAD and BIM files, client drawings, correspondence, and increasingly work held in the cloud. Cyber insurance helps you respond to a breach, ransomware attack or data loss: the cost of getting systems back up, notifying affected parties, and managing your obligations under UK GDPR and the Data Protection Act 2018. For a small firm without an in-house IT team, the incident-response support that comes with a cyber policy is often as valuable as the cover itself.

Office contents and equipment

Whether you're working from a home office, a co-working desk or a leased studio, your kit has real value — workstations, laptops, large-format printers, plotters and the software licences that run on them. Contents cover replaces them after theft, fire or damage. If you work from home, don't assume your household policy extends to business equipment or business use; it frequently doesn't, so check.

Business interruption

If an insured event — a fire or flood at your premises, say — stops you working, business interruption cover helps replace the income you lose while you get back on your feet. For a new practice where cash flow is already tight, keeping the lights on through a disruption can be the difference between a setback and a closure. It's usually arranged alongside your contents or property cover.

None of these five is a substitute for PII, and only employers' liability is a strict legal requirement (and only once you employ). Think of them as a menu you build from according to how your practice actually operates — home-based sole practitioner versus a studio with three staff will land in very different places.

Getting cover as a brand-new firm: simpler than you'd think

A worry we hear a lot from people setting up: "I've got no trading history — will anyone insure me?" The reassuring answer is that a start-up is often easier to underwrite, not harder. You've no back-catalogue of past projects to disclose, no claims history to explain, and a clean, clear story about what you intend to do. Underwriters like clarity.

To get a quote, a new practice typically needs to share:

• Who you are and your background — your qualifications, ARB registration, and your experience to date. Your track record as an employed architect counts; it's evidence of your competence even though the practice is new.
• What services you'll offer — the type of work (residential, commercial, conservation, and so on) and the RIBA work stages you'll cover. Be honest about anything higher-risk, such as work on high-rise or complex projects.
• Your expected fee income — a realistic estimate of turnover for your first year. It's fine that this is a projection; underwriters expect that from a start-up.
• Your business structure and premises — sole trader, limited company or partnership, and whether you're home-based, in co-working space, or leasing a studio.
• Staff plans — whether you're employing anyone now or soon, which drives the employers' liability question.

Choosing your limits. The limit of indemnity is the maximum your PII will pay out. Sensible options for a small practice are commonly discussed in round figures — £1m, £2m or £5m — but the right level for you isn't a guess. It's driven by the value and risk of the projects you take on, and often by what your clients require: a developer, a public body, or a lender may specify a minimum PII limit in your appointment before they'll engage you. A good approach is to set a limit that comfortably covers your typical project and can be increased as you grow or as a particular commission demands. A broker who knows the architects' market will steer you to a level that satisfies clients without paying for more than you need.

Your "before you open" insurance checklist

Run through this as you approach launch. It keeps the regulatory and insurance pieces moving in step so nothing is left until the last minute.

• Confirm your ARB registration is live before you use the title "architect" or take on work.
• Decide whether you're pursuing RIBA Chartered Practice now or later, and note its PII expectation if you are.
• Arrange professional indemnity insurance to be live on or before your first day of trading.
• Check the retroactive date on your PII if you're carrying over any earlier work under your own name.
• Settle your limit of indemnity — and check whether any early client requires a specific minimum.
• Sort employers' liability before your first employee starts — it's a legal requirement, not a nice-to-have.
• Weigh public liability if clients visit you or you're on site.
• Consider cyber, contents and business interruption against how and where you actually work.
• Confirm home-working cover for business equipment if you're not renting a studio — don't assume your home policy stretches.
• Diarise your renewal from the outset, and understand run-off so continuity is protected for years to come.

Why a specialist broker helps a start-up

You could go direct, but there's real value in a broker who knows the architects' market when you're setting up. A specialist understands the ARB's requirements and the language your future clients' appointment documents use, so your cover lines up with what you'll actually be asked to produce. They'll help you avoid two classic start-up mistakes — buying more cover than you need, and buying too little to win the work you want. And when a client appointment turns on evidence of PII, they can turn a quote and certificate around quickly, so insurance is never the thing standing between you and your first signed commission.

Get your practice covered and ready to launch →

About Apex

Apex Insurance Brokers Limited is a Bristol-based, FCA-authorised broker. We work with professional practices across the UK and understand what a newly-launching architecture firm needs — from getting professional indemnity in place for day one to layering on the wider cover as you grow and take on staff. Tell us about your plans and we'll build the right protection around them, quickly and without jargon. Early-stage companies can work through a roadmap built around funding stage instead.

Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority (FRN 724952). This guide is general information, not advice on a specific policy.