Development Finance vs Bridging Loans: UK SMB Guide
Development finance and bridging loans both provide short-term property funding, but they serve different purposes. Bridging covers gaps between transactions or secures property quickly. Development finance funds ground-up builds or heavy refurbishment in staged drawdowns. Choosing the wrong product can increase costs and cause programme delays. This guide explains how each works and when to use them.
What Each Product Actually Does
Bridging finance is a short-term secured loan, typically three to eighteen months, used to bridge a funding gap: buying before selling, securing a property at auction, or completing a light refurbishment before refinancing onto a term mortgage. The full loan is usually advanced on day one against an existing or readily realisable asset.
Development finance is structured differently. Lenders advance an initial tranche on land or site purchase, then release further tranches at agreed construction milestones, verified by a monitoring surveyor. The facility covers both land cost and build cost, and the loan to gross development value (LTGDV) ratio governs total exposure. Drawdown periods commonly run twelve to thirty-six months depending on project scale.
How Lenders Assess Risk on Each Product
For bridging loans, lenders focus on the security value and the credibility of the exit route: sale proceeds, a refinance offer, or confirmed mortgage in principle. Credit history matters but specialist bridging lenders will often proceed with adverse credit if the security and exit are strong. Loan to value (LTV) for first-charge bridging typically sits at 65 to 75 percent of open market value.
Development finance underwriting is more involved. Lenders commission an independent quantity surveyor to validate the schedule of works, cost plan and timeline. They assess the developer's track record, the planning permission status, and the projected gross development value (GDV) assessed by an independent valuer. LTGDV limits typically sit between 60 and 65 percent, with loan to cost (LTC) ratios capped at around 85 to 90 percent of total project cost including land.
Interest, Fees and True Cost Comparison
Bridging interest is usually expressed as a monthly rate. First-charge regulated bridging currently ranges from around 0.55 to 0.85 percent per month for clean credits; unregulated commercial bridging runs slightly higher at 0.65 to 1.10 percent per month. Arrangement fees of one to two percent are standard. Because the loan is fully drawn from day one, interest accrues on the whole balance immediately, whether retained, rolled or serviced.
Development finance is often priced on a similar monthly basis, commonly 0.75 to 1.25 percent per month, but because tranches are drawn progressively the day-one interest burden is lower. Interest is typically rolled into the facility and repaid from the sale or refinance at completion. Monitoring surveyor fees, planning contingency and professional fees must be factored into the cost plan. Both products carry exit fees on some facilities; confirm this before signing heads of terms.
Planning Permission and Its Effect on Product Choice
Planning status is one of the clearest decision points between the two products. If planning permission is not yet in place, most development finance lenders will not proceed, or will lend only against land value on bridging terms until permission is granted. A bridging loan can therefore serve as a land acquisition tool while you pursue planning, with a rollover into development finance once consent is secured.
Once full planning permission is in place and a costed schedule of works is ready, development finance becomes the appropriate instrument. Some lenders offer a combined facility that starts as a bridging loan and converts to a development facility on grant of planning, avoiding a second set of arrangement fees. Permitted development conversions, such as office to residential under Class MA, generally sit within development finance rather than bridging because of the construction element, even though permitted development does not require a full planning application.
Exit Strategies for Each Product
A clear, realistic exit is the single most important factor for any short-term property finance facility. For bridging loans, the two primary exits are sale of the property and refinance onto a commercial mortgage, buy-to-let mortgage or owner-occupier mortgage. Lenders expect evidence of the exit at application: a marketed comparable, a mortgage agreement in principle, or confirmed sale heads of terms.
For development finance, the exit is almost always sale of completed units or refinance onto a term investment mortgage once the development reaches practical completion and, where applicable, achieves an acceptable void or tenancy period. Some lenders offer a retention facility that converts to a twelve-month term after practical completion to allow lettings to stabilise before a longer-term refinance. Planning for the exit twelve months before the facility expires avoids the cost of extension fees, which on development finance can run to 0.25 to 0.50 percent per month on the outstanding balance.
Regulatory Position and Borrower Protections
Regulated bridging loans apply where the borrower or an immediate family member intends to occupy the property as their main residence. Regulated loans fall under the FCA's mortgage conduct of business rules, and borrowers have access to the Financial Ombudsman Service. The lender must be FCA-authorised for regulated mortgage contracts.
Unregulated bridging and development finance are not subject to FCA mortgage regulation because the borrower is acting in a business capacity. Borrowers have fewer automatic protections and the FOS does not handle unregulated lending disputes. Legal advice before signing any facility agreement is advisable, particularly on personal guarantees, which most development finance and bridging lenders require from directors or partners with significant control.
The FCA has been consulting on extending consumer protection principles to some categories of unregulated lending; check the current position with your solicitor.
Choosing Between the Two Products
The core rule is straightforward: if the work is cosmetic or the transaction is a gap-fill with a clear near-term exit, bridging is appropriate; if the project involves structural construction, a monitored cost plan and a timeline beyond twelve months, development finance is the right tool. Using bridging to fund a development project is a common and expensive mistake because the full facility is drawn immediately, accruing interest on funds not yet needed.
Hybrid scenarios exist. A light refurbishment bridging loan can fund a conversion of up to six units provided the works are not structural. Beyond that, most lenders require a development finance facility with a monitoring surveyor. If your project sits on the boundary, a specialist broker can present the scheme to both bridging and development lenders simultaneously to identify which will offer terms.
Speed of drawdown, total facility cost and lender track record with similar schemes should all inform the final decision.
| Feature | Bridging Loan | Development Finance |
|---|---|---|
| Typical term | 3 to 18 months | 12 to 36 months |
| Drawdown structure | Full amount on day one | Staged tranches at milestones |
| Typical monthly rate | 0.55% to 1.10% | 0.75% to 1.25% |
| Max LTV / LTGDV | 65% to 75% LTV | 60% to 65% LTGDV |
| Max LTC | Not applicable | 85% to 90% |
| Monitoring surveyor | Not required | Required |
| Planning required | Not always | Yes, for most lenders |
| FCA regulation | If residential occupancy | Generally unregulated |
| Primary exit | Sale or refinance | Sale of units or term refinance |
| Personal guarantee | Usually required | Usually required |
Step-by-step
- Confirm planning status: full permission, permitted development, or pre-application. This determines which product lenders will consider.
- Produce a costed schedule of works or cost plan. Development finance lenders need this before issuing heads of terms.
- Identify your exit route and document it: comparable sales evidence, mortgage in principle, or pre-sale agreements.
- Establish the loan amount needed, split between land or purchase cost and construction or refurbishment cost.
- Approach specialist lenders or a broker experienced in both product types. Request indicative terms from at least two lenders for comparison.
- Instruct a solicitor before accepting any facility agreement. Review personal guarantee terms, arrangement fees and any exit fees carefully.
- Once facility is agreed, ensure drawdown trigger conditions are met before each tranche request to avoid programme delays.
Example
A four-partner LLP purchased a vacant commercial building with planning consent for eight residential units. They initially considered bridging but the eighteen-month build programme and staged cost plan pointed clearly to development finance. A lender advanced 62 percent of GDV, releasing tranches at foundation, first fix and practical completion stages. Interest was rolled into the facility. On sale of units, the facility was repaid in full with no extension fees required.
Frequently asked questions
Can I use a bridging loan to fund a ground-up construction project?
In most cases, no. Ground-up construction requires a monitored cost plan and staged drawdowns that sit outside the bridging loan structure. Using bridging for construction means paying interest on the full facility from day one, including funds not yet deployed. Development finance is the correct product. Some lenders offer a hybrid facility for very small schemes of one or two units, but these are exceptions rather than the rule.
How long does it take to arrange development finance compared to bridging?
Bridging loans can complete in five to fifteen working days for straightforward cases. Development finance typically takes four to eight weeks because lenders require an independent valuation of GDV, a quantity surveyor report validating the cost plan, and a review of planning documents and warranties. Building this timeline into your project programme is important. Rushed development finance applications often result in incomplete due diligence and facility delays.
Do I need a track record to access development finance?
Track record matters to most development finance lenders, particularly for larger schemes above one million pounds. First-time developers can access development finance but will typically face lower LTGDV limits, higher rates and stronger requirements for an experienced project manager or main contractor.
Some lenders specifically offer first-developer products with enhanced monitoring and mentoring built into the facility structure. A credible professional team can partly offset a limited personal track record.
What happens if my development runs over time or over budget?
Cost overruns and programme delays are the most common causes of development finance stress. Most facilities include a contingency allowance of five to ten percent within the approved cost plan. If costs exceed the approved budget, you will need to fund the shortfall from equity or negotiate a facility increase with the lender, which triggers additional fees and valuation costs.
Extension fees apply if the facility term is exceeded. Maintaining close contact with your monitoring surveyor and lender throughout the build reduces the risk of late-stage surprises.
Are personal guarantees always required for bridging and development finance?
Almost universally, yes. Both bridging and development finance lenders require personal guarantees from directors, partners or shareholders with significant control. The guarantee is typically unlimited or capped at the facility amount. Some lenders will consider a capped or time-limited guarantee for borrowers with very strong security positions.
Your solicitor should review the guarantee terms carefully before you sign, as they create personal liability that sits outside the limited liability structure of an LLP or limited company.
By Adam Parker, Founder & Managing Director, Muswell Rose. Reviewed by Oliver Mackman, Director, Best Business Loans Ltd. Last reviewed 2026-06-25.