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Multi-Unit Freehold Block Mortgages | Why Valuation Method Decides Your Loan
Last Updated: August 2026
Featured in The Telegraph • Daily Mail • The Times • Sky News
A multi-unit freehold block, usually shortened to MUFB, is one freehold title covering two or more self-contained flats, bought and mortgaged as a single property rather than as separate flats. It is a different animal from a standard buy to let mortgage, and which valuation method a lender uses on the block can change what you can borrow by tens of thousands of pounds, before you have even chosen a rate.
Most specialist lenders cap MUFB lending at around 75% loan to value, tested against the combined rent from every unit
One published case study valued the same six-unit block £174,000 apart, depending only on which valuation method the lender used
Most standard lender panels cover two to six units. Go beyond that and you move into a smaller pool of specialists
As featured in…
Meet your Advisor
Harry Goodliffe
- FCA Authorised
- Director & Mortgage Advisor
“I‘m not about confusing jargon or passing you from person to person. From our first chat to the day you get the keys, you’ll deal directly with me. I‘ll keep you updated, answer any burning questions, and do everything I can to make the whole process as stress-free as possible.”
Let’s Talk About Your Mortgage
How I check an MUFB case before it goes to a lender
1
Step 1
First Chat
Tell me the number of units, whether each one is fully self-contained with its own kitchen and bathroom, the purchase price or current value, and the rent each unit achieves or is expected to achieve.
2
Step 2
Research
I check which valuation method your likely lenders use, block or aggregate, because the gap between them can decide whether the numbers work at all, run the block through the same kind of rent cover stress test as a standard buy to let, and check whether personal or limited company ownership gets you further.
3
Step 3
Application
If the numbers work, I handle the application and stay the point of contact with the lender and any solicitor involved.
4
Step 4
Completion
Your mortgage offer is issued and my flat £350 fee becomes payable. If no offer is issued, you owe me nothing.
About
Our approach to multi-unit freehold blocks
Most failed MUFB applications are a valuation problem, not an affordability problem
One specialist broker’s own published case study valued the same six-unit block two ways: £945,000 using the aggregate method, adding up what each flat would fetch sold separately, and £771,000 using the block method, valuing the whole building as one investment on its rental income. That £174,000 gap meant a £130,500 difference in what the owner could actually borrow at 75% loan to value. The building did not change. The valuation instruction did, which is why I check which method a lender is likely to use before you apply, not after, in the same way I would for any buy to let case.
Whole-of-Market Access
Whole-of-market comparison across 120+ lenders
One Flat Fee
A flat £350 fee, payable only once your mortgage offer is issued
Honest Advice
If the right answer is to do nothing, I will say so
Outside My Scope
I do not offer equity release
How I help
I check three things: which valuation method your likely lender uses and what that means for your borrowing, whether every unit is genuinely self-contained with its own kitchen and bathroom, since a shared facility can tip a block into HMO rules instead of MUFB, and whether the combined rent across all units clears the lender’s stress test, in the same way I would check a single unit’s maximum rent against a mortgage. Getting this wrong is a common reason an application falls over late, after a valuation has already been paid for.
Who this is for
Landlords buying or refinancing a block of two or more self-contained flats held under one freehold title, whether that is a converted house, a small purpose-built block, or a portfolio addition bought as a single lot. I cover this across Winchester and the rest of Hampshire, whether that is a purchase or a remortgage.
Related: Remortgage.
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Written by Harry Goodliffe
Director & Mortgage Adviser, HTG Mortgages · FCA Authorised (1017945)
CeMAP Qualified · Featured in National Press · South England Prestige Awards 2026/27 winner