Mixed-Use Commercial Mortgages London

Underwriting a London mixed-use commercial mortgage

Mixed-use covers any single asset holding both commercial and residential tenure, from a shop with two flats above up to a high-street block with ground-floor retail and twenty apartments over it. The variable that decides everything is the residential proportion, measured both by floorspace and by income. Below roughly 40% residential by floorspace the building reads as commercial investment with a residential overlay, tested on ICR, and the mainstream commercial desks will engage. At 40% and above it qualifies for semi-commercial pricing, which is generally keener because the residential security is easier to re-let than an empty shop. Above about 60% residential the building starts pricing off the specialist residential end of the market instead. The two measures can disagree, and when they do lenders follow the income: a block that is 45% residential by floorspace but 65% residential by income will be treated as predominantly residential.

The cover test is blended. A valuer produces a Red Book report splitting commercial value, residential value and the total, and the lender then tests the commercial rent and the residential rent against stressed interest. Some desks blend the two income streams and apply a single ICR at 140 to 155%. Others test each element separately and take the weaker of the two ratios. That methodological difference is not a detail: on the same building it can move the loan amount by a meaningful margin, and it is one of the few places in commercial lending where knowing the lender's internal approach before you submit is worth real money. We model the deal both ways before choosing a desk.

London is generating new mixed-use stock continuously through Class MA, the permitted-development right that allows Class E commercial floorspace to convert to residential under a prior-approval process rather than a full application. The borough registers are full of it, and the typical output is precisely the mixed-use archetype: retained commercial at ground floor with new flats above. Bromley application 26/02781/NOT covered part of the first floor at 236 High Street, Bromley BR1 1PQ converting to a one-bedroom residential unit under Class MA. Croydon application 26/01495/GPDO proposed eleven self-contained flats across part of the ground, first, second and third floors at 72 to 80 North End CR0 1UJ. In Ealing, application 262469PACBSD converted ground-floor Class E space at 66 Carlyle Road W5 4BL into three flats. At 134 to 136 Commercial Road E1 1NL in Tower Hamlets, application PA/26/00846/S proposed three self-contained flats at first and second level above retained commercial. Each of those buildings becomes a mixed-use refinance candidate the moment both elements are let and stabilised, and that is a large and steady source of the deals we see.

Illustrative sizing. A borough high-street block at £2.4M with ground-floor retail let on a ten-year FRI to a national covenant and six flats above on ASTs, roughly 55% commercial by floorspace and 65% commercial by income, sizes to around 70% LTV on a blended ICR of 145% and prices in the lower half of the band with NatWest, Santander or Shawbrook. The same building with a five-year lease on the commercial element and one flat vacant sizes closer to 65% and moves to InterBay Commercial, Together or Aldermore towards the top of the range. A part-vacant block bought to reposition is not term debt on day one: it is a bridge at 8.5 to 11.0% pa covering purchase, works and the letting void, with an agreed term-out once both elements are income-producing.

Finance structures for London mixed-use

A single commercial investment facility across the whole building is the primary route. Where residential exceeds 40% of floorspace the deal qualifies for semi-commercial terms, which are generally keener. Part-vacant or repositioning cases route through a bridge with an agreed term-out once both elements are let.

Lender appetite for London mixed-use

Appetite is broad and competitive across most of the mixed-use range. InterBay Commercial is the most consistently active named lender on small and mid-sized London mixed-use, with Together, Aldermore, YBS Commercial and Hampshire Trust covering the same ground at 7.0 to 8.5% pa at 65 to 75% LTV. Shawbrook, Cambridge and Counties and OakNorth take the larger blocks at 6.75 to 8.25% pa. NatWest, Lloyds, Barclays and Santander compete hard on well-let, predominantly commercial blocks with strong covenants on the retail element, at 6.5 to 7.5% pa and up to 75% LTV where the covenant justifies it. Predominantly residential mixed-use routes more naturally to InterBay Commercial and the specialist semi-commercial pool. Listed and conservation-area buildings need a lender that will price the maintenance obligation rather than shy from it, which in practice means Shawbrook, Cambridge and Counties, Together and the private-bank end of the market. Part-vacant blocks are a bridging conversation first and a term conversation second.