Guarantees
Contents |
[edit] Bonds and guarantees
Bonds and guarantees are forms of security that accompany contractual obligations and are based on either primary or secondary obligations.
Primary obligation bonds are simple or on-demand bonds or demand guarantees, where the bondsman pays an amount of money set out in the bond immediately on demand in writing without any preconditions, including the supplier’s liability. They are generally resisted where possible because of their draconian nature.
Secondary obligation instruments normally comprise guarantees, including parent company guarantees (PCG), or conditional bonds and the bondsman is only liable where a breach of contract has occurred, for example, the contractor is in breach of contract. Contractors are more likely to provide such forms of security than the on-demand variety.
Guarantees must be in writing to be enforceable. However, it is important to recognise that the fact an agreement is described as a bond or guarantee does not necessarily mean that is what it is in legal terms. It is the content of the document that is key and so It is essential that a guarantee is clear and unambiguous.
In construction projects, it is common for there to be variations to the works during the course of a contract. Whilst these are generally permitted by the contract without discharging the guarantor from their liability, if variations are significant, it can be wise to seek consent for the variation from the bondsman.
[edit] Domestic suppliers
The Sale of Goods Act and the Unfair Contract Terms Act provide some protection to consumers, allowing them to return goods that are not of an acceptable standard.
A guarantee offered to a consumer is a ‘promise’ that problems with a product or service that occur within a specified period of time will be rectified. Typically guarantees are not paid for. A warranty on the other hand (or an ‘extended guarantee’) generally is paid for and is similar to an insurance policy.
Guarantees for domestic work given by suppliers as part of their standard terms and conditions can prove to be meaningless unless they are backed by a third party (such as an insurer), as the supplier can simply cease trading and so evade their liability (particularly where the guarantee is for a long period, or where a potential claim is very large). This is common, for example, with the guarantee of damp-proofing works for 20 years or more.
[edit] Parent company guarantees
Parent company guarantees (PCG) can be used to provide protection in the event of default on a contract that is controlled by a parent company (or holding company). Typically, such a default might be caused by the insolvency of the supplier.
See Parent company guarantees for more information.
[edit] Collateral warranties
Collateral warranties are agreements which are associated with another 'primary' contract. They provide for a duty of care to be extended by one of the contracting parties to a third party who is not party to the original contract.
See Collateral warranties for more information.
[edit] Retention
Retention is a percentage (often 5%) of the amount certified as due to a supplier on an interim certificate, that is deducted from the amount due and retained by the client. The purpose of retention is to ensure that the supplier properly completes the activities required of them under the contract.
See Retention for more information.
[edit] Insurance
Insurance provides third-party protection against risks. Risks on construction projects can be significant, and so insurance is very common, providing protection both for the insured, and for the party to whom the insured has a liability.
See Insurance for more information.
[edit] Related articles on Designing Buildings Wiki
- Advance payment bond.
- Bonds.
- Bonds v guarantees.
- Breach of contract.
- Collateral warranties.
- Comfort letter.
- Consumer Protection from Unfair Trading Regulations 2008 CPRs.
- Defects.
- Duty.
- Insurance.
- Latent defects.
- Parent company guarantee.
- Performance bond.
- Professional consultant's certificate.
- Warranty.
Featured articles and news
ECA, JIB and JTL back Fabian Society call to invest in skills for a stronger built environment workforce.
Women's Contributions to the Built Environment.
Calls for the delayed Circular Economy Strategy
Over 50 leading businesses, trade associations and professional bodies, including CIAT, and UKGBC sign open letter.
The future workforce: culture change and skill
Under the spotlight at UK Construction Week London.
A landmark moment for postmodern heritage.
A safe energy transition – ECA launches a new Charter
Practical policy actions to speed up low carbon adoption while maintaining installation safety and competency.
Frank Duffy: Researcher and Practitioner
Reflections on achievements and relevance to the wider research and practice communities.
The 2026 Compliance Landscape: Fire doors
Why 'Business as Usual' is a Liability.
Cutting construction carbon footprint by caring for soil
Is construction neglecting one of the planet’s most powerful carbon stores and one of our greatest natural climate allies.
ARCHITECTURE: How's it progressing?
Archiblogger posing questions of a historical and contextual nature.
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.























