Greater London

Semi-Commercial Mortgages in Westminster

Mortgages and finance for shops with flats above, mixed-use blocks and other part-commercial, part-residential property in Westminster.

Matt Lenzie
Written and reviewed by Matt Lenzie Founder & Principal Broker · 25 years arranging semi-commercial and mixed-use finance
£795k
Residential median (local)
1,530
Residential sales, 12 months
£700,000
Flat median (residential element)
120%
New-build premium

We arrange semi-commercial and mixed-use mortgages in Westminster for purchases, remortgages and portfolios from around 150,000 pounds upward. Whether the asset is a retail unit with a flat above, a guest house, a surgery with residential accommodation or a mixed-use investment block, we assess the commercial and residential split, model the combined income, and take the case to the lenders most likely to fund it in Greater London.

Lenders price a semi-commercial deal on the strength of the commercial covenant, the residential value and the combined rent. The local residential market is a direct input here, because the flats and maisonettes within a mixed-use asset are valued against it: Westminster is steady, with roughly 1,530 residential sales over the past twelve months at a £795,000 median, a useful read on the residential half of any semi-commercial property.

Funding a mixed-use purchase or refinance in Westminster

We arrange the full range of semi-commercial and mixed-use finance for Westminster property. A semi-commercial mortgage funds the purchase or refinance of an investment or owner-occupied mixed-use asset, typically to 70 to 75 percent of value, priced from around 6.5 to 8.5 percent a year. Where the residential element is large, a mixed-use mortgage may be sized on the blended income from both parts. Semi-commercial bridging covers a quick purchase, an auction lot or a property that needs works before it will support a term loan, usually from around 0.70 to 0.95 percent a month. For landlords holding several mixed-use or part-commercial assets, portfolio finance consolidates them under one facility. Once an asset is stabilised and let, a semi-commercial remortgage moves it onto a keener rate and releases equity for the next purchase in Greater London.

The semi-commercial property we fund in Westminster

Each kind of mixed-use asset is treated differently by different lenders, and we arrange finance for all of them in Westminster and across Greater London. That covers the classic shop with a flat above, offices with residential upper floors, pubs and guest houses with owner or letting accommodation, restaurants and takeaways with flats, retail parades with residential uppers, HMOs above commercial units, surgeries and professional premises with living space, and larger mixed-use blocks. The key question every lender asks is how much of the property, by floor area or value, is residential against commercial, because that split decides which desk will lend and on what terms.

Mixed-use lending conditions in Westminster

Westminster sits at the premium end of the Greater London market, where higher residential values lift the residential element of a mixed-use asset and can support keener leverage. Strong values help the case, though lenders will still test the commercial unit's covenant and the rent it produces before stretching the loan.

The residential element: what local values tell a lender

The flats and living space within a semi-commercial asset are valued against local residential evidence, so sold-price depth is a direct input on a mixed-use deal. Westminster recorded around 1,530 residential sales over the past year at a median of £795,000, which makes the local market steady. New-build stock carries a premium of 120% over existing stock here. The commercial element of the property, by contrast, is valued on its tenant, lease and yield, which we assess case by case.

This residential evidence values the living space within a mixed-use property and gauges how readily it would let or sell. It is not a guide to the commercial unit's value, which is tenant and covenant driven.

Residential sold price by type (Westminster)

Detached£2,900,000
Semi-detached£4,400,000
Terraced£2,019,500
Flat / apartment£700,000

Source: HM Land Registry residential price-paid data, last 12 months.

Recent price trend

QuarterMedianSales
2024-Q3£935k919
2024-Q4£893k950
2025-Q1£815k987
2025-Q2£1m583
2025-Q3£870k650
2025-Q4£775k485
2026-Q1£650k294
2026-Q2£750k27
Evidence

Recent residential sales in Westminster postcodes

A sample of recent residential transactions across W10, W2, NW8, SW1V, SW1P, evidence for valuing the residential element of a semi-commercial property rather than a guide to commercial values.

AddressPostcodeTypePriceDate
10, SECOND AVENUE W10 4RW Terraced £750,000 24 April 2026
5 VERE COURT, WESTBOURNE GARDENS W2 5PT Flat / apartment £197,000 23 April 2026
FLAT 6, 84, WESTBOURNE TERRACE W2 6QE Flat / apartment £570,000 23 April 2026
43, ELM TREE ROAD NW8 9JR Detached £6,800,000 17 April 2026
35, WARWICK CRESCENT W2 6NE Flat / apartment £650,000 17 April 2026
15A, GUILDHOUSE STREET SW1V 1JB Flat / apartment £725,000 16 April 2026
FLAT 125, THE COLONNADES, 34, PORCHESTER SQUARE W2 6AP Flat / apartment £840,000 16 April 2026
FLAT 16, ORMOND HOUSE, MEDWAY STREET SW1P 2TB Flat / apartment £510,000 15 April 2026
FLAT 25, TOWNSHEND COURT, SHANNON PLACE NW8 7DP Flat / apartment £455,000 14 April 2026
19, KENDAL STEPS W2 2YE Flat / apartment £500,000 13 April 2026
FAQ

Semi-commercial mortgages in Westminster: common questions

How much can I borrow on a semi-commercial mortgage in Westminster?

Most lenders fund up to 70 to 75 percent of value on a semi-commercial mortgage, with the loan sized on the combined commercial and residential rent at an interest cover ratio. The Westminster residential market, currently steady, informs the value a lender will place on the residential element of a mixed-use asset.

Which lenders offer semi-commercial mortgages in Westminster?

We hold more than one hundred lender relationships across high street banks, challenger banks and specialist lenders. The right lender for a Westminster semi-commercial deal depends on the commercial-to-residential split, the leverage you need and whether you borrow personally or through a limited company, and we shortlist the desks most likely to fund it across Greater London.

How does the Westminster residential market affect a mixed-use property?

It matters because the flats and living space within a semi-commercial asset are valued against local residential evidence. HM Land Registry records a £795,000 residential median in Westminster over the past year across roughly 1,530 sales, with flats around £700,000. The commercial element, by contrast, is valued on its tenant, lease and yield, which we assess case by case.

Do you arrange semi-commercial finance beyond Westminster?

Yes. We arrange semi-commercial and mixed-use mortgages across the whole of Greater London and the wider UK, with the same approach: assess the commercial and residential split, model the combined income, and match the case to the lenders that treat that asset well.

Buying or refinancing in Westminster?

Send us the property details and we will come back with a view on lenders and likely terms within one working day.