Architects Insurance
Protect your architectural practice from design liability claims, project disputes and professional negligence allegations with specialist cover.
Get in touchWhat is architects insurance?
Architects insurance is a specialist policy that protects architectural practices from the significant professional liability risks of designing buildings and specifying construction methods. It typically includes professional indemnity, public liability and employers liability.
If a design error leads to structural problems, water ingress or a building that does not meet planning requirements, the resulting claim can run into hundreds of thousands of pounds. Professional indemnity covers your legal defence and any damages.
Get options from specialist insurers to find policies from insurers experienced in covering architectural practices, ensuring your cover reflects the size and complexity of the projects you work on.
Professional Indemnity
Covers claims arising from design errors, specification failures or negligent advice.
Public Liability
Covers injury or property damage claims from site visits or client meetings.
Employers Liability
Required by law if you employ staff, covering workplace injury and illness claims.
Cyber Liability
Covers data breaches and loss of digital design files and client information.
Who needs architects insurance?
Sole practitioner architects
Running an independent architectural practice
Architectural firms
Managing a team of architects and technologists
Landscape architects
Designing outdoor spaces and public realm projects
Interior architects
Designing interior layouts and spatial solutions
Architectural technologists
Producing technical drawings and construction details
Professional registration and ARB requirements for architects
Architects in the UK must be registered with the Architects Registration Board (ARB) to use the protected title 'architect'. Registration is mandatory for anyone offering architectural services. The ARB sets ethical and professional standards and requires all registered architects to maintain Professional Indemnity Insurance as a condition of registration.
Professional Indemnity Insurance is not optional for architects — it is a regulatory requirement enforced by the ARB. Architects must maintain minimum cover of at least £500,000 for sole practitioners and up to £3m for larger practices. Failure to maintain appropriate cover results in suspension from the register.
Clients — particularly those commissioning large building projects — will not appoint architects without proof of professional indemnity insurance. Banks, building contractors, and local authorities also routinely request evidence of cover before commencing work.
Architects also typically carry separate Statutory Liability or Professional Indemnity extensions to cover Building Regulations approvals, planning advice, and design errors. Design liability can extend decades into the future, so policies often include long-tail (run-off) cover to protect against claims made years after the project ends.
How much does architects insurance cost?
£400 – £1,000 per year for sole practitioners; architectural practices with employees typically pay £1,500 – £3,500
Real claims: what architects insurance covers
An architect's design for a residential extension failed to account for adequate drainage, resulting in subsidence damage to the client's home and neighbouring properties. Remedial work and structural repairs exceeded £65,000.
Professional indemnity covered the full remedial costs, compensation to the client and affected neighbours, and the architect's defence costs when neighbours also made claims.
£71,200 total — £65,000 remedial and structural repairs, £4,500 neighbour compensation, and £1,700 legal fees
An architect specified incompatible materials for a commercial office building. Six months after completion, the materials began to fail, requiring extensive replacement and causing the building to be closed temporarily.
Professional indemnity covered the cost of material replacement, loss of use compensation to the client during remedial work, and legal costs in defending the claim.
£52,900 total — £38,000 material replacement, £11,200 loss of use compensation, and £3,700 legal fees
An architect's design failed to meet Building Regulations standards for accessibility and fire safety. The local authority issued a stop notice, requiring expensive modifications before the building could be occupied.
Professional indemnity covered the cost of design modifications, remedial building work, and lost rental income while the building remained unoccupied pending compliance work.
£87,600 total — £52,000 remedial building work, £28,000 lost rental income, and £7,600 legal and compliance fees
WHY CECIL
Built differently.
Design liability expertise
Architectural claims often involve complex design and specification disputes. Cecil works with insurers who have dedicated construction professional teams.
Run-off cover available
Architects need cover for projects long after completion. Cecil finds policies that include or offer affordable run-off cover for completed projects.
Meets ARB requirements
Cecil ensures your professional indemnity meets the minimum requirements set by the Architects Registration Board and RIBA where applicable.
Competitive quotes for all practice sizes
Whether you are a sole practitioner or a large firm, Find cover options from specialist insurers who cover architects at every scale.
Common questions about architects insurance
Do architects need professional indemnity insurance?
Yes, professional indemnity is a requirement for practising architects. The Architects Registration Board expects all registered architects to hold adequate professional indemnity cover.
What level of professional indemnity do architects need?
The minimum level depends on your professional body's requirements and the projects you work on. Many practices carry between £250,000 and £2m, with larger firms needing more.
Does architects insurance cover design errors discovered years later?
Yes, professional indemnity operates on a claims-made basis, meaning your current policy covers claims made during the policy period regardless of when the work was done, subject to the retroactive date.
Do architects need public liability insurance?
If you visit construction sites or client premises, public liability covers injury or property damage claims. Many clients and main contractors require it.
What is run-off cover for architects?
Run-off cover provides professional indemnity protection after you stop practising. It covers claims made against you for work done before you retired or closed your practice.
Is professional indemnity insurance mandatory for architects in the UK?
Yes, professional indemnity insurance is a mandatory requirement for all registered architects. The ARB requires architects to maintain appropriate cover as a condition of remaining on the register. If you let your cover lapse, you may be suspended from the register.
What is the minimum level of professional indemnity cover architects need?
The ARB requires a minimum of £500,000 for sole practitioners. Larger practices typically need £1m to £3m depending on the scale and value of projects. Always confirm the minimum requirement with the ARB and your professional body before commencing practice.
Does architects insurance cover design errors that are not discovered until years later?
Professional indemnity policies typically cover claims made during the policy period, but many include extended reporting periods (tail cover) that can extend to five years or longer. Building defects can take years to manifest, so run-off insurance or claims-made extensions are important protections.
Are architects liable if a building fails to meet Building Regulations or planning requirements?
If your design causes the building to fail compliance, professional indemnity covers your liability to the client for remedial work and any fines from the local authority. However, if you failed to obtain necessary consents or approvals, this may be treated differently — clarify coverage scope with your insurer.
What additional insurance do architects need beyond professional indemnity?
Many architects carry separate statutory liability cover for Building Regulations and planning advice. If you contract with contractors on a design-and-build basis, you may also need to be named on their professional indemnity. Discuss supplementary covers with your insurer based on your project delivery methods.
Interested in Architects insurance?
We will be in contact when Cecil launches.