Complex buy to let cases are won on preparation, not rate. David Farmer explains how lenders assess portfolio landlords, SPVs and HMOs in 2026 – and what gets deals done.
Lending to portfolio landlords rose 10.7% in the year to Q1 2026, reaching £3.2 billion. Lending to everyone else rose 5.5%. That gap tells you almost everything about where the buy to let market has gone (UK Finance, Q1 2026).
The landlords still buying are the ones who treat it as a business. Limited companies, mixed portfolios, HMOs, small blocks, layered ownership. And the cases have got harder to place – not because lenders have lost their appetite, but because they now want to see the whole picture before they commit.
I read a piece recently by Rob Stanton at Landbay making exactly this point to brokers, and it rang true. Packaging a case is no longer about hitting the headline criteria. It’s about answering the underwriter’s questions before they’ve thought to ask them.
There were 58,272 new buy to let loans advanced in the first quarter of 2026, worth £10.8 billion – up 3.26% on the same period last year, with the value up 7.02%. Buy to let now accounts for 8.9% of gross mortgage advances, according to the FCA’s Q1 2026 lending statistics.
Look closer and the mix has shifted. Remortgaging rose 11.1% to 39,160 loans. Purchases fell 14.9% to 16,871. Landlords aren’t rushing to buy. They’re refinancing what they already own, and they’re doing it into structures that work harder.
The fundamentals underneath are actually decent. Average gross yields hit 7.21%, up from 6.93% a year earlier. The average rate on new buy to let loans came in at 4.71%, twenty-nine basis points below the year before. And arrears fell 24.3% over twelve months to 8,960 cases.
So the picture isn’t a market in trouble. It’s a market that’s become more selective – on both sides of the table.
In thirty years of this, the single most common reason a good deal stalls isn’t the property or the borrower. It’s the paperwork arriving in the wrong order.
Incomplete portfolio schedules. Rental figures on the schedule that don’t match the bank statements. A property in the wife’s name that nobody mentioned. Three different sets of accounts telling three slightly different stories. None of it is dishonest. It’s just untidy – and untidy costs you time, and sometimes the deal.
A lender looking at a portfolio case is a bit like a cricket captain reading a pitch. They’re not just looking at the ball in front of them. They’re thinking about conditions, history, and what happens on day four. If the picture you hand them is patchy, they fill the gaps with caution.
“Complex buy to let doesn’t mean difficult. Complex means there are more moving parts, and every one of them needs to be in the right place before you knock on a lender’s door. The deals I’ve seen fail were almost never bad deals – they were good deals presented badly. Preparation is the whole job.”
— David Farmer, Lime Finance Solutions
If you own four or more mortgaged rental properties, you’re a portfolio landlord in the lender’s eyes, and the rules change. They won’t just assess the property you’re financing. They’ll look at the lot – total gearing, rental coverage across the portfolio, and how exposed you are to one property type or one town.
That means the portfolio schedule isn’t an admin task. It’s the centrepiece of your application.
Get it right and it does the underwriter’s job for them. Consistent figures. Current valuations that you can stand behind. Rents that reconcile to what’s actually landing in the account. And a short written narrative explaining anything odd – the void, the refurb, the property that’s on a lower rate because it’s coming off fixed next March.
Get it wrong and you get re-queries. Every re-query costs a week. String four together and your seller has found someone else.
With complex buy to let the limited company borrowing has gone from niche to normal. We wrote about why limited company buy to let is now the industry standard, and the direction of travel hasn’t changed since.
But structure brings variables. An SPV with the wrong SIC code. Directors who also need to give personal guarantees. Shareholdings that trigger extra due diligence. Beneficial ownership that doesn’t match the title. A share purchase rather than a property purchase – we covered that scenario in how to secure an SPV mortgage for a share purchase, and it catches people out regularly.
Property type adds another layer. Small HMOs, multi-unit blocks and semi-commercial units all get assessed differently, and lender appetite varies wildly for cases that look near enough identical on paper. One lender’s straightforward six-bed HMO is another’s automatic decline. Leasehold flats bring their own complications — see what leasehold reform means for buy to let mortgages. And broken freehold titles will stop a mainstream lender dead.
The skill isn’t knowing every criteria sheet by heart. It’s identifying the right route early, before you’ve spent six weeks and a valuation fee finding out you were pointed at the wrong lender.
Section 21 has gone. From 1 May 2026, no-fault evictions ended under the Renters’ Rights Act. Practically, that matters for anyone who assumed they could get vacant possession when they needed it — to refurbish, to upgrade, or to sell with the property empty. We set out the compliance side in our guide to the Renters’ Rights Act deadline. The NRLA is a useful source for the ongoing detail.
EPC C is coming. From 1 October 2030, privately rented properties in England and Wales will need an EPC rating of C or better under the Minimum Energy Efficiency Standard, subject to exemptions including a £10,000 cost cap. If a chunk of your portfolio sits at D or E, that’s a capital expenditure plan you need now, not in 2029 – and it needs to be visible in how you structure your refinancing today. Some lenders are already pricing green products at 0.10% to 0.20% below their standard rates for C-rated stock.
Underwriters have started asking about both. If your answer is a shrug, that tells them something.
Before you approach anyone, get four things straight.
Reconcile your portfolio schedule against your bank statements and your accounts, and fix the differences. Confirm your ownership structure actually matches the title and the Companies House record.
Pull your EPCs and know which properties need work. And write two paragraphs explaining what you’re trying to achieve and why – because a lender who understands the plan will lend against it far more readily than one who’s guessing.
That’s not busywork. That’s the difference between an offer in three weeks and a decline in six.
My daughter works in construction health and safety, and she’d tell you the same thing in her own field: the paperwork isn’t the boring bit that gets in the way of the job. Done properly, the paperwork is the job.
If you’ve got a portfolio that’s grown a bit organically, or a case that’s been declined and you’re not entirely sure why, that’s usually a fixable problem. I’m always happy to have that conversation.
David Farmer Lime Finance Solutions
Anything beyond a single property owned personally. Limited company or SPV ownership, portfolios of four or more mortgaged properties, HMOs, multi-unit blocks, semi-commercial units, expat or non-resident borrowers, and unusual titles all push a case into specialist territory.
Not necessarily, and it depends entirely on your tax position and plans. It suits many landlords, particularly higher-rate taxpayers building a portfolio, but it isn’t automatic. Speak to your accountant and your broker together before you restructure anything.
Because they’re assessing your overall exposure, not just one asset. Total borrowing, rental coverage and concentration risk across the portfolio all feed into whether they’re comfortable. It’s not nosiness – it’s how the risk is priced.
A well-prepared portfolio or SPV case typically completes in six to ten weeks. A poorly prepared one can take twice that, or not complete at all. Preparation is the biggest single variable you control.
It can. Lenders are increasingly asking about energy performance across a portfolio, and some price better for C-rated stock. If you’re fixing for five years today, you’re fixing into a period where the 2030 deadline is very close.
Over 30 years finance experience. Former credit underwriter, founder of Lime Finance Solutions in 2012. Multi Award winning business, featured in Sunday Telegraph, Parliamentary Review, Sky TV and others. Regular contributor to press and business associations. FCA Authorised, ALIBF Qualified. Specialist in Commercial Mortgages, Business Lending, Property and Development Finance.
Tel: 01293 541333
Email: hello@lime-fs.com
Tel: 0207 866 2102
Email: hello@lime-fs.com
Tel: 01293 541333
Email: hello@lime-fs.com
Tel: 0207 866 2102
Email: hello@lime-fs.com
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