Who we are

One Guarantee provide a range of structural warranties for commercial and residential property throughout the UK.

All our warranties are designed to protect developers and homeowners from latent defects that may occur following the practical completion of a build. Our policies cover you for a period of up to 12 years, protecting investment and providing peace of mind.

Please get in touch with us if you require a quotation or would like to know more.

Which structural warranty is right for you?

Call us today on 01603 218288

new house
completed house
commercial building
social house
self build house
converted house
mixed house

Why choose One Guarantee?

AA-Rated Insurers: All our warranties are backed by AA-rated Insurers (Standard & Poor's). This level of financial security is crucial for long-term insurance contracts of this nature.

12 Year as Standard: With the exception Completed Homes (10 years), all our Warranties are offered for 12 years as standard. This provides the buyer with peace of mind for longer.

No Registration Fees: One Guarantee will never charge registration/membership fees and there are no hidden costs

Quick Quote: One Guarantee offer a unique Quick Quote facility aiming to give you an indicative price within 24 hours.

Additional Services: One Guarantee can offer services such as Acoustic and Air Pressure Testing, Energy Performance Assessments and Building Control.

Premium Finance: Flexible premium instalment rates are available at 2.6% (% APR variable) subject to approval.

Mechanical and Electrical Cover: Machinery Inherent Defects cover is also available, insuring against mechanical and electrical faults of machinery installed as part of the project.

Legal Indemnities: We offer a range of legal indemnity solutions designed to complement our structural warranties. Our legal indemnities are always tailored for the specific transaction in hand.