Architects are one of the few groups on this site for whom professional indemnity is not a commercial choice. The Architects Registration Board requires a registered architect in practice to hold adequate and appropriate insurance cover, and the Architects Code sets it out as a standard of conduct rather than as advice. That changes the buying question: not whether to hold it, but at what limit, on what terms, and for how long after you stop.
The requirement, and where it comes from
The Architects Code, published by the Architects Registration Board, requires architects to have adequate and appropriate insurance cover for their contractual liability and for claims made against them, and to maintain it for a period after work ceases. The Board publishes its own guidance on what it expects, including minimum levels and the position of architects working for employers or overseas. Reading the Board's guidance rather than a broker's summary is the point of departure, because it is the Board and not the insurer that decides whether cover was adequate.
Claims made, and the long tail of building work
Professional indemnity answers for claims made during the policy period, whatever year the drawing was produced, and construction claims arrive late: a defect can surface years after practical completion, and limitation periods for building work run long. That is why continuous cover and a retroactive date reaching back to the start of practice matter more in this profession than in most, and why run off cover after retirement or closure is a regulatory expectation rather than a nicety.
What the client contract adds
Above the regulator's floor sits the contract. Appointment documents for public sector and commercial work name a limit, frequently one, two or five million pounds and higher on large projects, and commonly require the cover to be maintained for a stated number of years after completion. Where a practice takes on design and build work, the contract may also require cover on a per claim rather than aggregate basis, which is a different and dearer product.
The practice's other covers
Public liability answers for injury and damage on site visits, employers' liability is compulsory once anybody is employed, and office contents, cyber and legal expenses are the ordinary small business sections. None of those substitutes for professional indemnity, and the commonest gap in a small practice is not the limit but the years: a policy allowed to lapse between projects leaves finished work with nothing to answer for it.
Questions people ask about architects pi insurance
Is professional indemnity insurance mandatory for architects?
The Architects Registration Board requires a registered architect in practice to hold adequate and appropriate insurance cover and to maintain it after work ceases. It is a standard of conduct under the Architects Code rather than a matter of commercial preference.
How much PI cover does an architect need?
The Board publishes what it expects as a minimum, and client appointments routinely require more, commonly one, two or five million pounds with higher limits on larger projects. The contract and the Board's guidance together set the figure.
What is run off cover and why do architects need it?
Run off keeps a claims made policy in force after a practice stops, so that a claim about earlier work still finds a live policy. Because construction defects surface years later, it is a regulatory expectation for architects rather than an optional extra.
Does PI cover cost more for design and build work?
Often, because design responsibility transferred to the contractor increases exposure and contracts more frequently require any-one-claim limits rather than aggregate ones. Tell the insurer what proportion of the practice's work is design and build.