Architects going solo: first-year PI insurance in 2026

You have handed in your notice at the practice you helped to build. The first instruction is already sitting in your inbox. Before the studio opens its doors, the professional indemnity arrangement needs to be right.

ARB Standard 8 — the day-one duty

The Architects Registration Board is the statutory regulator of the profession under the Architects Registration Board Act 1997. The Code of Conduct and Practice sets out twelve standards, and Standard 8 governs insurance arrangements. It requires every architect on the register to hold and maintain adequate and appropriate professional indemnity insurance covering the work they carry out.

The important word is adequate. ARB does not stipulate a fixed monetary minimum. Adequacy is judged against the nature, scale and value of the work you accept, the contractual limits of liability in your appointments and the reasonable expectations of your clients. A studio taking on residential refurbishments of a few hundred thousand pounds will land in a different place from one advising on mixed-use schemes valued in the tens of millions.

Standard 8 also requires the cover to be in force at the time you carry out the work, not merely at the date the ARB annual return is filed. If your first instruction comes in before your policy incepts, you may be exposed and technically in breach of the Code. ARB may investigate a complaint from a client who discovers cover was not in place, and the Professional Conduct Committee has the power to reprimand, penalise or, in serious cases, erase a name from the register.

RIBA affiliation and its impact on your placement

The Royal Institute of British Architects is a chartered membership body rather than a statutory regulator. RIBA affiliation is not compulsory in order to practise or to describe yourself as an architect — that title is protected only by the ARB register. The RIBA Code of Professional Conduct nonetheless carries weight where a client contract references it, or where clients specifically require a Chartered Practice.

From an underwriter's perspective RIBA membership is not a rating factor in the same sense as claims history or turnover. It can, however, be a useful signal in the narrative that accompanies your proposal. Chartered Practice status requires that the studio holds current PI at RIBA-recommended limits, employs a proportion of ARB-registered staff and maintains a written policy on continuing professional development, equality and environmental practice.

Insurers routinely factor those governance markers into their view of the risk. If you intend to apply for Chartered Practice status within the first two or three years, mentioning that intention at proposal stage is sensible. It signals a considered approach to quality management, which some markets prefer over a purely commercial framing. Equally, choosing not to affiliate is a legitimate decision and should not, on its own, restrict your options.

Retroactive continuity from your previous practice

The most common gap in a new studio's cover arises at the transition point. Your previous practice's PI policy responds to claims arising from work carried out in the name of that firm, subject to its own limits and terms. Work you now bill through your new studio sits with your new insurer. Anything drafted, checked or signed by you personally that later becomes contentious may fall to either side depending on when the alleged breach occurred and in whose name.

The mechanism that connects the two is the retroactive date on your new policy. This is the earliest date from which negligent acts, errors or omissions are covered. Set it too late and old exposures remain uninsured on your side. Set it thoughtfully — usually back to the start of your career or to your last uninterrupted period of PI — and there is no dormant liability waiting for a limitation clock to run.

Where the previous practice remains trading, its live policy typically continues to answer for its own name. Where the practice is winding up, run-off cover should be arranged for at least six years, and longer where dwellings are in scope. Coordinating the two placements before you leave is materially easier than trying to bridge them afterwards.

The first Higher-Risk Building (HRB) project

The Building Safety Act 2022 introduced a new statutory regime for Higher-Risk Buildings, broadly defined as buildings of at least 18 metres or seven storeys containing two or more residential units. If your first commission touches an HRB — whether new build, refurbishment or fire-safety remediation — the insurance conversation changes materially.

Several PI markets currently decline HRB exposure outright at proposal stage. Others accept it with additional information, an increased limit or a per-project declaration. The Fire Safety (England) Regulations 2022 and the associated duty-holder framework place specific obligations on the Principal Designer, and insurers ask carefully about which role you will take, which parts of the design responsibility you carry and how competence has been demonstrated under the new regime.

For a solo studio in its first year, the honest position is often to defer HRB work until year two or three, unless a specific project has been discussed with your broker and an insurer has confirmed appetite in writing. Accepting an HRB instruction without checking the policy first can trigger a coverage dispute at the worst possible moment.

First-year premium sizing

Premium in year one is driven by projected fee income, discipline mix, contract types, retroactive date and the limit of indemnity. For a studio expecting fee income in the low six figures, working on domestic and small commercial projects, first-year premium can typically sit in the range of a few thousand pounds. Where turnover forecasts are higher, or where HRB or overseas exposure is present, the figure rises accordingly.

Two variables move the number most. The limit of indemnity is chosen to match contract requirements and reasonable client expectation — £250,000, £500,000, £1 million and £2 million are common starting points. The excess — the amount you carry per claim before the policy responds — is set with cashflow in mind, since a new studio typically holds a lower excess than an established practice.

Underwriters will also want to see a proposal that gives an accurate view of your career work, not just the projected book. Under the Insurance Act 2015, a commercial insured owes a duty of fair presentation. Understating past exposure, even inadvertently, can affect how the policy responds to a claim; overstating it needlessly can raise the premium.

What a starter policy should include

A first-year architect's PI arrangement typically includes the civil liability cover you would expect — negligence in the performance of professional services, breach of contract, breach of statutory duty and, in most wordings, dishonesty of employees. Beyond that, several extensions are worth checking at proposal stage rather than after a claim.

Look for adequate defence costs treatment (in addition to the limit rather than eroding it, where available), ombudsman and disciplinary hearing costs, mitigation costs where a defect can be remediated before a formal claim, and continuity of cover for the retroactive period. Confirm the geographical and jurisdictional scope: many wordings default to UK-only and add cost for wider territory. Confirm the position on collateral warranties and net contribution clauses if you will be signing them.

Aggregation, the way multiple claims are treated as one for the purpose of the limit, deserves particular attention on an architect's policy. A single design defect repeated across several units of a housing scheme can otherwise breach the limit quickly. A broker can walk you through wordings before you commit.

Building Safety Act 2022 and long-tail exposure

Section 135 of the Building Safety Act 2022 amended section 1 of the Defective Premises Act 1972 by extending the limitation period for actions concerning dwellings. The period for future works is 15 years; for works completed before the Act came into force on 28 June 2022 the period is 30 years retrospectively. That looks back over most of a mid-career architect's working life.

For a solo architect starting out in 2026, the practical consequence is that any dwelling you were responsible for at a previous practice may now sit within the extended window. Your new policy's retroactive date needs to reach back far enough to catch that exposure, or your previous practice's run-off cover needs to answer for it. Where a claim arrives many years after completion, memory alone is not a defence — the record you keep in year one may become the record you rely on in year twenty.

Common pitfalls and red flags

Frequently asked questions

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