Mortgage guide

EWS1 for converted MUFB remortgage

For multi-unit freehold blocks (MUFBs) with more than 10 units, financing often falls under the remit of commercial buy-to-let lenders or even full commercial mortgage lenders.

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EWS1 for converted MUFB remortgage

For multi-unit freehold blocks (MUFBs) with more than 10 units, financing often falls under the remit of commercial buy-to-let lenders or even full commercial mortgage lenders. These lenders specialise in handling larger, more complex properties, offering MUFB investment mortgages that are tailored to the needs of professional landlords and portfolio investors. Unlike traditional buy-to-let providers, these lenders tend to have more flexible underwriting criteria, taking into account the property’s income potential, tenancy structure, and overall condition.

Key Factors for High-Rise MUFB Blocks

When assessing applications for high-rise blocks, lenders evaluate several structural and safety factors that can impact both the property’s value and the terms offered.

Lift Availability: High-rise buildings without a lift can be less appealing to both tenants and lenders. Accessibility is a key factor for rental desirability, and properties with lift access often achieve stronger valuations. The presence of a lift is typically considered a positive feature that can help secure the best MUFB mortgage rates.

Cladding and EWS1 Certification: Cladding has become a major consideration in the mortgage market since the Grenfell Tower tragedy. Lenders now require evidence that a building’s external wall system meets fire safety standards. The EWS1 form (External Wall System 1 certification) is a crucial document used to confirm that the external wall materials have been professionally assessed. Without EWS1 certification, or if cladding issues are identified, securing finance from MUFB mortgage lenders can become difficult.

Impact of EWS1 on MUFB Mortgages

Approval Process: Having a valid EWS1 certificate can significantly streamline the mortgage approval process. It provides lenders with the assurance that the property meets modern fire safety requirements, reducing the perceived risk associated with the investment.

Property Valuation: Properties with unresolved cladding issues or lacking EWS1 certification may experience reduced valuations. This directly impacts borrowing capacity, as the loan amount for MUFB investment mortgages is typically tied to the property’s assessed value. A lower valuation could result in less favourable terms or higher interest rates.

Planning Finance for Large MUFBs

For investors considering large MUFBs, using an MUFB mortgage calculator is a useful first step to estimate borrowing potential based on income, stress testing, and property value. Pairing this with advice from an experienced broker can help identify the best MUFB mortgage rates from lenders who are familiar with high-rise developments and the challenges that come with them.

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For a residential multi-unit freehold block, using the combined monthly rent and value of that block. Mixed-use or commercial lease arrangements need a separate assessment.

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Indicative estimate only, subject to lender criteria and valuation. This is not a mortgage offer. Your property may be repossessed if you do not keep up repayments.

MUFB mortgage criteria

For context, these are the wider product terms covered by this guide. Availability and eligibility depend on your circumstances and the lender.

MUFB mortgage criteria
CriteriaDetail
Max LTV, block valuationUp to 85% at the moment on the cases we arrange, blocks of up to 6 units only
Max LTV, aggregate valuationUp to 80% on the cases we arrange
BorrowersPersonal, Ltd co, LLP, Offshore Trusts
Repayment typeInterest only, repayment
TermUp to 35 years
Product optionsFixed, variable, base rate tracker
ExperienceNot always required; fewer lenders and lower LTVs without it
Max borrowers6
Valuations availableBlock Valuation or Aggregate Valuation
Max unitsNo overall cap; the 85% option caps at 6 units
Tenant typesHMO, Airbnb, students, professionals, social housing, DSS

About the author

Joseph Lane CeMAP is an expert commercial mortgage broker

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Calls and emails here go to Joseph personally, not to a general inbox.

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Frequently asked questions

What are MUFBs?

MUFBs are multi-unit freehold blocks, meaning multiple self-contained flats held under a single freehold title, commonly financed using specialist buy-to-let or commercial mortgage products.

Can a first-time buyer get an MUFB mortgage?

Yes, first-time buyers can obtain MUFB mortgages, but lender options are more limited and borrowing is often capped at lower LTVs, with stricter affordability and property criteria applied.

How are MUFBs valued?

MUFBs are valued either as a single block investment, often based on rent and investor demand, or on the aggregate of the individual flats' values. The block basis is usually lower because fewer buyers can purchase a whole block.

What LTV are MUFB mortgages?

MUFB mortgages commonly offer loan-to-value ratios between 65% and 85%, depending on unit count, valuation approach, shared utilities, tenancy profile, and whether the block qualifies for buy-to-let rather than commercial lending.

What is an MUFB bridging loan?

An MUFB bridging loan is a short-term loan secured on a multi-unit freehold block, used to buy, refurbish or refinance it before an MUFB mortgage, a title split refinance or unit sales repay it.

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