Why procurement route matters to lenders
The construction procurement route defines the contractual relationships between the developer, the design team, and the construction contractor. It determines who bears the risk of design errors, construction defects, cost overruns, and programme delays. For development finance lenders, the procurement route directly affects the risk profile of the project and therefore the terms they are willing to offer.
Lenders are not indifferent to how the building is procured. A fixed-price design and build contract with a reputable contractor transfers significant risk away from the developer (and therefore away from the lender's security). A self-build arrangement where the developer manages individual trades directly retains that risk with the developer, increasing the lender's exposure.
Understanding the procurement options and their implications for development finance helps developers structure their projects for optimal financing terms. In some cases, adjusting the procurement route — even if it adds cost — can significantly improve the finance available.
JCT contracts
The Joint Contracts Tribunal (JCT) suite of contracts is the most widely used in UK construction. For residential development, the most common forms are the JCT Design and Build Contract (DB) and the JCT Minor Works Building Contract (MW). Lenders and their solicitors are thoroughly familiar with JCT terms, which reduces legal review costs and accelerates the finance process.
JCT Design and Build (DB) is the gold standard for development finance. Under this form, the contractor takes single-point responsibility for both design and construction, delivers the works for a contract sum (which can be fixed or adjustable), and provides collateral warranties to the lender and subsequent purchasers. The lender's risk is mitigated by the contractor's design and construction liability.
JCT Minor Works (MW) is suitable for smaller, simpler projects where the design is provided by the developer's architect and the contractor is responsible only for construction. This is less lender-friendly than D&B because the developer retains design risk, but it is adequate for straightforward schemes and is commonly used for developments with a contract value below GBP 500,000.
JCT Intermediate (IC) bridges the gap between MW and the full JCT Standard Building Contract. It is suitable for medium-complexity projects and provides more detailed provisions for sub-contracting, variations, and extensions of time than MW. Some lenders prefer IC over MW for schemes in the GBP 500,000 to GBP 2 million range.
NEC contracts
The NEC (New Engineering Contract) suite, now in its fourth edition (NEC4), is increasingly used in UK construction and is the mandated form for many public sector projects. NEC contracts emphasise collaborative working, early warning mechanisms, and transparent cost management. They are well suited to complex projects where flexibility and active contract management are required.
Development finance lenders are increasingly comfortable with NEC contracts, though some still prefer JCT due to greater familiarity. The NEC's pricing mechanisms (Options A through F, ranging from fixed price to cost-reimbursable) offer flexibility, but lenders strongly prefer Option A (priced contract with activity schedule) as it provides the closest equivalent to a fixed-price JCT.
The NEC's early warning and compensation event mechanisms can create cash flow uncertainty that lenders find uncomfortable. Under NEC, the contractor can claim compensation events (equivalent to JCT variations) that adjust the price and programme. If these are frequent or poorly managed, the total cost can exceed the original budget, potentially exhausting the development finance facility.
Developers using NEC contracts for development-finance-backed projects should ensure robust contract management, minimise the scope for compensation events through thorough employer's requirements, and maintain a detailed risk register that tracks potential cost impacts. This proactive approach gives lenders confidence in cost certainty.
Self-build and self-managed construction
Self-build or self-managed construction involves the developer acting as their own main contractor, directly engaging individual trades (groundworkers, bricklayers, electricians, plumbers, roofers) without a single-point building contract. This is common among smaller developers and can reduce costs by eliminating the main contractor's overhead and profit (typically 10-15% of build cost).
Development finance lenders are cautious about self-build arrangements because they increase risk in several ways: there is no single-point liability for defects or delays, there is no contractual mechanism for cost recovery if things go wrong, and the developer must have strong construction management skills to coordinate multiple trades effectively.
Lenders who accept self-build typically charge 1-2% per annum more than equivalent contracted schemes, require higher equity contributions (35-40% rather than 25-30%), and impose more intensive monitoring (monthly rather than stage-based inspections). They will also scrutinise the developer's construction experience more closely — a first-time developer without construction management experience is very unlikely to secure finance for a self-build scheme.
Hybrid arrangements — where the developer self-manages the major trades but has a formal contract with a main contractor for the structural shell — can provide a middle ground. The contractor's involvement provides single-point liability for the critical structural works, while the developer manages the fit-out trades. Some lenders are comfortable with this approach for experienced developers.
Collateral warranties and step-in rights
Development finance lenders require collateral warranties from the main contractor, architect, structural engineer, and other key consultants. A collateral warranty is a contract between the professional or contractor and the lender (who is not a party to the main building contract), giving the lender the right to bring a direct claim if the warranted party's work is defective.
Step-in rights (also known as novation rights) allow the lender to step into the developer's position under the building contract if the developer defaults on the loan. This gives the lender the ability to complete the development using the existing contractor, preserving the value of the partially completed works. Without step-in rights, the lender may need to find a new contractor to complete the works, which adds cost, delay, and complexity.
Self-build arrangements cannot provide collateral warranties or step-in rights because there is no building contract to warrant or step into. This is one of the primary reasons lenders prefer formal contract arrangements — the collateral documentation provides meaningful protection that is absent in self-managed construction.
Choosing the right procurement route for your scheme
For most development finance transactions, JCT Design and Build is the optimal procurement route. It provides cost certainty (fixed or target price), single-point liability (the contractor is responsible for both design and construction), familiar documentation (lenders and solicitors know the form), and robust collateral warranty and step-in mechanisms. Unless there is a compelling reason to use an alternative, JCT D&B should be the default.
NEC is appropriate for larger, more complex projects where collaborative working and active contract management add value. If using NEC, choose Option A (priced contract) to give the lender maximum cost certainty, and ensure the contract management processes are robust and well resourced.
Self-build is appropriate only for experienced developers who can demonstrate strong construction management capability and who are willing to accept the higher financing costs and reduced lender options. The cost savings from eliminating the main contractor's margin must be weighed against the higher finance costs and increased personal risk.