Preliminary contracts in the construction industry
In law, a preliminary contract typically aims to prevent the parties to a contract from entering (at a later stage) into a similar legal arrangement with third parties. In order to confirm that that they will not do so, parties will sign a preliminary contract.
Preliminary contracts are more common in Europe when buying land or property, especially when reserving property off-plan. Buying off-plan can be an uncertain process as a buyer commits to a property purely on the basis of drawings (plans) before any construction has taken place.
Preliminary contracts serve as a formal confirmation of reservation and may have more legal power than a deposit on its own. But they are formulated to secure the commitment of buyers rather than compelling developers to stick to their side of the bargain. Furthermore, a preliminary contract may not compel a developer to sell the property that is the subject of the contract.
Prior to signing the preliminary contract, potential buyers are advised to check how far the development has progressed and whether the developer or contractor is still in a position to start construction work. A further point to note is whether the work (if started) is in accordance with the plans. Some large developers can provide buyers with a degree of certainty but this may not be the case with all developers.
Preliminary contracts can be useful to potential buyers but they are not a full confirmation of the right to get what has been reserved.
NB The term 'preliminary contract' may also be used to refer to a contract for preliminary works, such as site preparation, setting out, construction of access roads and so on.
[edit] Related articles on Designing Buildings Wiki
- Agreement.
- Bespoke construction contract
- Construction contract conditions
- Contract documents for construction
- Contractual obligation.
- Contractual right.
- Core clause.
- Intermediate building contract
- JCT
- JCT Construction management contract
- Letter of intent.
- Lump sum contract
- NEC3
- Standard form of contract
Featured articles and news
Professional practical experience for Architects in training
The long process to transform the nature of education and professional practical experience in the Architecture profession following recent reports.
A people-first approach to retrofit
Moving away from the destructive paradigm of fabric-first.
International Electrician Day, 10 June 2025
Celebrating the role of electrical engineers from André-Marie Amperè, today and for the future.
New guide for clients launched at Houses of Parliament
'There has never been a more important time for clients to step up and ...ask the right questions'
The impact of recycled slate tiles
Innovation across the decades.
EPC changes for existing buildings
Changes and their context as the new RdSAP methodology comes into use from 15 June.
Skills England publishes Sector skills needs assessments
Priority areas relating to the built environment highlighted and described in brief.
BSRIA HVAC Market Watch - May 2025 Edition
Heat Pump Market Outlook: Policy, Performance & Refrigerant Trends for 2025–2028.
Committing to EDI in construction with CIOB
Built Environment professional bodies deepen commitment to EDI with two new signatories: CIAT and CICES.
Government Grenfell progress report at a glance
Line by line recomendation overview, with links to more details.
An engaging and lively review of his professional life.
Sustainable heating for listed buildings
A problem that needs to be approached intelligently.
50th Golden anniversary ECA Edmundson apprentice award
Deadline for entries has been extended to Friday 27 June, so don't miss out!
CIAT at the London Festival of Architecture
Designing for Everyone: Breaking Barriers in Inclusive Architecture.
Mixed reactions to apprenticeship and skills reform 2025
A 'welcome shift' for some and a 'backwards step' for others.