Refurb to Let Mortgage in 2026: From Building Site to Let Property

The scaffolding comes down on a Thursday. The skip goes on the Friday. By Monday the house has a new kitchen, a rewire signed off, a boiler with a commissioning certificate and an EPC that finally reads C rather than F. The investor stands in the hallway thinking the project is done. The lender does not agree, and the gap between those two views is where most refurb to let projects lose money. A finished house is a building site that has stopped. A let house is an income producing asset with a valuer’s rental assessment behind it, and only the second of those gets refinanced at the improved value. Between the two sits a stretch of four to ten weeks nobody budgets for: marketing, viewings, referencing, a gas safety certificate, an electrical installation condition report, deposit protection, and a signed tenancy with a start date. Every one of those weeks is paid for at bridging rates.

Refurbishment Loan is a trading name of Lenzie Consulting Ltd, company number 08174104, and it is a UK finance arranger and introducer rather than a lender. Bridging and refurbishment finance secured on investment property is unregulated lending sitting outside the Financial Conduct Authority’s regulated mortgage perimeter, and the business holds no FCA authorisation because the products it arranges are unregulated. It does not arrange regulated bridging, residential mortgages, or any loan secured on a property the borrower or an immediate family member lives in or intends to live in, and those enquiries go to a regulated firm. Every figure below is an indicative range, confirmed only in a formal offer and never on a website.

In the episode below, Georgina takes the handover apart week by week, from the last invoice to the first rent payment.

Two loans, one plan, and a handover in the middle

Refurb to let describes a sequence, not a single product. Phase one is short dated money that buys a property mainstream lending will not touch and funds the schedule of works, priced on light refurbishment pricing at 0.75 to 0.99 percent a month with up to 100 percent of the works funded in arrears. Phase two comes from a different lender panel entirely: a term loan at 6.0 to 7.5 percent a year, sized against the property as it now stands and the rent it now produces, which repays phase one and holds the asset.

Some lenders sell both phases in one wrapper, agreeing the term rate and the conversion conditions at the original application. Others leave you to place the term loan yourself once the works are done. The wrapped version buys certainty and costs flexibility, because the works scope is limited and few lenders offer it. The unwrapped version takes the whole market’s pricing at the exit, and carries the risk that the market has moved by then. Which one wins is arithmetic on a specific property with a specific rent.

The loan is the lower of two ceilings, and investors only ever check one

Every refurb to let mortgage has two caps and the smaller one wins. The first is loan to value: 75 percent of the improved value, evidenced by a valuer who has seen the finished property. The second is interest cover, which most lenders set at 125 percent of the mortgage interest, calculated on the achieved rent.

The arithmetic matters because the two caps disagree more often than people expect. At 6.5 percent a year and a 125 percent cover test, every pound of borrowing needs 8.125 pence of annual rent behind it. Work that backwards and a property has to yield roughly 6.1 percent gross on its improved value before a 75 percent loan is even reachable. Below that yield the rent, not the valuation, decides how much you can borrow, and every extra pound of value the works created is value you cannot draw against.

Practical completion does not finish the project. A signed tenancy does, because the tenancy is the document the term lender is actually buying.

The gap between practical completion and a signed tenancy

The programme people write says works finish in week 20 and the remortgage completes in week 22. The programme that actually happens looks more like this.

Week	What happens	Who is waiting
0	Last trade off site, snagging list issued	Contractor
1 to 2	Gas safety certificate, EICR, EPC lodged, final clean	Landlord
2 to 4	Photographs, listing, viewings, offer from a tenant	Letting agent
4 to 6	Referencing, right to rent checks, tenancy signed, deposit protected	Referencing provider
6 to 10	Term lender instructed, valuation, legals, completion	Term lender

Six to ten weeks of bridging interest sits inside that table, and on the worked example below that is roughly 1,100 pounds a month of pure carry. The fix is not to work faster at the end. It is to start the letting process before the works finish, instruct the term lender at snagging rather than after the tenancy is signed, and build the void into the bridge term on day one so that the facility does not need an extension to survive it.

Why lenders want evidence of the let, not a projection

A projected rent is an opinion. A signed tenancy with rent landing in a bank account is a fact, and the term lender will price the difference. Most will want the tenancy agreement, the deposit protection certificate, the gas and electrical certificates, and increasingly the first month or two of bank credits showing the rent actually arriving. The valuer will give their own rental assessment, and where the signed rent exceeds it the lender will underwrite to the lower of the two.

That last point catches people out. Achieving 1,150 pounds a month on a property the valuer marks at 1,000 pounds a month does not raise your borrowing, because the lender uses the valuer’s figure in the cover calculation. The way to move the valuer is comparable evidence, which means letting agent listings for genuinely similar properties on the same streets, gathered before the valuation rather than argued afterwards.

Worked example: a three bed terrace in Stoke on Trent

Purchase at 128,000 pounds, works of 34,000 pounds covering a rewire, boiler, kitchen, bathroom, damp treatment and redecoration to reach an EPC of C. Improved value 192,000 pounds, rent achieved 1,050 pounds a month. The works phase runs on the bridge that funds the works at 0.82 percent a month over nine months.

Line	Figure
Day one advance (70% of purchase)	£89,600
Works facility (in arrears)	£34,000
Net money released	£123,600
Retained interest, 9 months at 0.82% pm	£9,852
Gross facility	£133,500
Arrangement fee at 1.75%	£2,336
Gross facility against £192,000 improved value	69.5%

At the exit the two ceilings are tested. The loan to value cap gives 75 percent of 192,000 pounds, or 144,000 pounds. The interest cover cap, on 12,600 pounds of annual rent at 6.5 percent with 125 percent cover, gives 155,076 pounds. The lower figure wins, so the refurb to let mortgage is 144,000 pounds, interest costs 9,360 pounds a year, and cover comes out at 135 percent with real headroom.

That 144,000 pound term loan repays the 133,500 pound bridge and returns 10,500 pounds before the term lender’s own fees. Cash into the deal was the 38,400 pound deposit, the 2,336 pound arrangement fee and roughly 2,400 pounds of valuation and legal costs, so about 32,600 pounds stays in the property after the refinance, before stamp duty. Change one input and the answer changes completely: at 850 pounds a month instead of 1,050 the cover cap falls to 125,538 pounds, below the loan to value cap and below the bridge redemption, and the deal needs cash from somewhere else to complete.

Where refurb to let projects actually break

Four failure points recur, and none of them is the works. The first is the yield problem above, discovered at the exit rather than modelled at the start. The second is the six month rule, where a term lender declines to lend on the improved value inside six months of purchase. Roughly half our lender panel applies it strictly and the rest will lend on the new figure at 3 to 4 months given evidence of the works, so placement matters more than the rate.

The third is a bridge term with no void built into it, which turns a normal letting delay into an extension fee. The fourth is an EPC that stops at D when the property needs C to be lettable under current rules, which is a works specification failure that only shows up when the certificate is lodged. All four are cheap to fix in week one and expensive to fix in month nine.

2026 outlook for refurb to let

The Bank of England held base rate at 3.75 percent at the July 2026 decision, and term buy to let pricing has settled with it. The refurbishment mortgage band has stayed at 6.0 to 7.5 percent a year through the year, which is what makes the cover arithmetic above stable enough to model nine months ahead of drawing the loan. When the exit rate moves half a point, the maximum loan on a fixed rent moves by roughly 7 percent, so a stable band is worth more to a refurb to let investor than a marginally keener bridge rate. Across our lender panel the refurbishment mortgage band has held at 6.0 to 7.5 percent a year for three consecutive quarters, and the Bank of England base rate at 3.75 percent is the reference the whole band is priced from.

Search demand is small and knowledgeable. Refurb to let mortgage runs at around 50 UK searches a month on September 2026 data, against 170 for refurbishment mortgage, which suggests most investors find the product under the broader term first. What has changed on the supply side is evidence: more term lenders now ask for bank credits showing rent received rather than accepting a signed tenancy alone, which adds a month to the timetable on a first project.

FAQ

Is a refurb to let mortgage one product or two? Both exist. Some lenders pre agree the works phase and the term phase in a single application, so the exit rate and conditions are contractual from day one. Others treat them separately, leaving you to place the term loan on the open market once the property is let. The first buys certainty, the second buys choice, and we price both before you commit.

Can I refinance before the property is let? Sometimes, on a lower loan. A few lenders will complete on a valuer’s rental assessment with no tenancy in place, but usually at reduced leverage and slightly worse pricing, because an empty property is harder to sell if the loan goes wrong. Where the numbers permit, letting first and refinancing second is the cheaper route.

Does the six month rule stop me refinancing at the improved value? Not always. It is a lender policy rather than a legal rule, so it varies. Some lenders will not use the improved value within six months of purchase under any circumstances. Others will, given a full schedule of works, invoices and a valuation that reflects the improvement. Choosing the right lender at the bridge stage is what keeps that option open.

What rent do lenders use if the valuer disagrees with my tenancy? The lower of the two. If your signed rent is above the valuer’s assessment, the cover calculation runs on the valuer’s figure, which reduces the loan. Supply comparable letting evidence for similar properties nearby before the inspection, because that is the only thing that reliably moves a rental assessment.

Talk to us

If you are part way through the works and the exit is the part keeping you awake, we will model the refurb to let mortgage against the rent you expect to achieve and tell you which of the two ceilings binds. Send the property, the schedule of works, your letting comparables and the redemption figure on the bridge that funds the works, and we will check the term loan repays it before you get near a valuation. See also our guide to the buy refurbish refinance arithmetic, which covers how much cash a repeatable cycle actually leaves behind.

All figures in this article are indicative ranges for UK refurbishment finance in 2026, confirmed only in a formal offer, and are not an offer, a quote or a financial promotion. Any facility is subject to lender terms, valuation and full underwriting. This article was written by Matt Lenzie.