Refurbishment finance: the purchase, the works, and the exit, funded as one case.

Light versus heavy refurbishment: where lenders draw the line

The first question any refurbishment lender asks is which side of the line the project sits, because the two sides are served by different lender pools at different prices.

• Light refurbishment: no structural work, no planning permission required, any change of use within permitted development. New kitchen and bathroom, rewire, replumb, windows, damp works, redecoration, EPC upgrades. Priced close to standard bridging, as of June 2026 around 0.80% to 1.10% per month, with day-one advances up to 80% LTV available from a handful of lenders.
• Heavy refurbishment: structural alterations, extensions, loft and basement conversions, change of use needing planning consent, commercial-to-residential conversion. A narrower lender pool, monitoring surveyors on larger works budgets, and pricing nearer the top of the bridging range. Where works exceed roughly 50% of the property’s value, or units are being created, the case starts to belong in development finance rather than bridging, and we will tell you when it does.

Misclassifying the project is the most common unforced error in this market. Present a loft conversion with a steel beam as "light refurb" and the lender re-categorises it mid-underwriting, repricing the deal three weeks into your timeline. We classify it correctly on day one and shortlist only lenders who will hold their terms.

How the funding is structured

Two structures dominate. The standard model is a purchase advance plus works in arrears: the lender advances up to 75% of the purchase price on completion, then funds up to 100% of the works cost in staged drawdowns. You front each stage, the valuer or monitoring surveyor signs it off, the lender reimburses, and the cycle repeats. On smaller light-refurb budgets some lenders release works funding in a single tranche on a midpoint inspection.

The alternative is GDV-based sizing, where the total facility is capped against the end value rather than the purchase price, typically 65% to 70% of GDV. On a deal with a genuine uplift this can fund the entire works budget and most of the purchase within the cap, reducing your cash in. Purchase-price-based lending suits thin-margin refreshes; GDV-based lending suits proper value-add projects, and it comes with a fuller valuation and tougher interrogation of your numbers.

Cost-of-works scrutiny: what underwriters actually check

The works budget gets more scrutiny than any other number in the application. Expect to provide a line-item schedule of works, contractor quotes (two on larger budgets), and a build programme with dates. Underwriters benchmark your costs per square metre against their own data, and a budget that is 30% light gets corrected upwards, which shrinks your facility or kills the deal. They also expect contingency of 10% to 15% on top of the contracted figure; its absence is read as inexperience.

Track record matters in the same review. A landlord with three completed refurbishments evidences them with before-and-after valuations and gets the benefit of the doubt on programme. A first-timer is not declined, but should expect a monitoring surveyor, slightly tighter staging and a lender chosen for hand-holding rather than headline rate. EPC-driven refurbishment is now a steady share of this desk: with minimum-standard pressure on rented stock, lenders are comfortable funding insulation, glazing, heating and ventilation works where the schedule shows the post-works rating, because the exit valuation and rentability both improve.

Exit options

Every refurbishment bridge is underwritten against its exit. The three standard routes are: refinance to a term mortgage at the post-works value, a single-let buy-to-let or, for conversions, an HMO mortgage at the converted value and room-by-room rent; sale, tested against realistic local marketing periods; or a pre-agreed bridge-to-let structure where bridge and term exit are underwritten together from the start, covered on our bridge-to-let page. If the strategy is to recycle your cash into the next purchase, the full method is in the buy, refurbish, refinance guide.

Worked example: £200,000 purchase, £40,000 works, £290,000 end value

A dated three-bed semi bought at £200,000. Schedule of works: £40,000 including 12% contingency, no structural work, so it underwrites as light refurbishment. Post-works value supported by comparables at £290,000. Nine-month facility at 0.90% per month, interest rolled, arrangement fee 2%.

The exit remortgage of £217,500 clears the £190,000 facility, the £3,800 fee and the £13,900 rolled interest with roughly £9,800 over, meaning the landlord’s cash left in the deal after refinance is materially below the £50,000-plus deposited, while the portfolio gains an asset worth £290,000. The works funding arriving in arrears is the operational catch: the landlord fronted each £20,000 stage before reimbursement, which is a cash-flow plan, not a footnote.

The same maths fails fast on weak deals: pay £230,000 for the same house and the exit barely covers the debt, which is why the underwriter, and this desk, test the end value before anyone signs terms.