Commercial Mortgages Mayfair
Mayfair carries the highest office rents in the United Kingdom. It is the home market for hedge funds, private equity houses and family offices, and it runs across W1J, W1K and W1S, from Piccadilly and Hill Street up through Bruton Street and New Bond Street to South Molton Street. We arrange commercial mortgages here on prime office buildings, luxury retail, hotels and the investment managers and professional firms buying the floors they occupy.
A commercial mortgage in Mayfair is long-term secured debt against business premises, underwritten on rental cover, trading profit or EBITDA depending on how the property is held. Commercial Mortgages London is a specialist commercial mortgage broker arranging owner-occupier, investment, semi-commercial and trading-business mortgages across Mayfair.
Postcode districts: W1J, W1K, W1S.
33 commercial-relevant planning applications live on the Westminster register.
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Mayfair prime offices and the highest rents in the UK
Mayfair is a specialist office market rather than a general one. The occupier base is dominated by investment managers, hedge funds, private equity houses and family offices, businesses that need small, high-specification floorplates in a specific few streets and will pay the highest rents in the country to get them. That produces an unusual property profile: period townhouses and mansion blocks converted to office use, floorplates measured in thousands rather than tens of thousands of square feet, and a tenant base with strong financial covenants but a preference for shorter, more flexible leases than a corporate headquarters occupier would take. Both halves of that description matter to an underwriter, and they pull in opposite directions.
The district also carries a genuine luxury retail and hospitality economy alongside the offices. New Bond Street, Duke Street and South Molton Street hold international brand retail, and the hotel stock includes long-established landmarks such as the Ritz on Piccadilly. That mix is why the planning register here is full of shopfront subdivisions and hotel fabric repairs alongside office refurbishments. One structural change worth noting: the United States Embassy left Mayfair for Nine Elms in January 2018, releasing a substantial Grosvenor Square site and shifting part of the diplomatic and professional occupier map southwards across the river. We treat that as context, not as a value judgement on the district.
Land Registry has essentially nothing to say about Mayfair. Only 23 open-market residential transactions completed in the W1J, W1K and W1S postcode districts in the twelve months to 29 May 2026. No median built on that sample is worth quoting, and the shortfall is the point: barely any of this district is residential stock. Values here come from commercial comparables and lender valuations, never from a Land Registry median. Twenty-three sales in a year, in a district with this much floorspace and this much value per square foot, is the most emphatic evidence on this entire site that a district is commercial rather than residential. Anyone quoting you a Mayfair average price is quoting a number built on twenty-three data points.
Ticket size shapes the lending conversation more than product does. Prime office buildings here are frequently bought by investment vehicles rather than by trading businesses, and loan sizes sit well above the average central London deal, which changes the panel. A let building is still tested on interest cover stressed at 140 to 160% at 65 to 75% LTV and 6.5 to 8.5%. A firm buying the floors it occupies is still tested on EBITDA cover of 1.3 to 1.5 times at up to 75% on bricks and 6.0 to 7.5%. What changes is that the number of lenders willing to write a single large cheque against a Mayfair townhouse office is far smaller than the number who will fund a £2 million building elsewhere.
What the Westminster register shows for W1J, W1K and W1S
Westminster City Council publishes a machine-readable planning register, so unlike Islington, Camden and the Royal Borough we can put real, address-specific evidence on this page. When we read it on 26 July 2026 it carried 33 commercial-relevant applications inside these three postcode districts. The five below are representative: an office reconfiguration and refurbishment at fourth-floor level on New Bond Street, a retail unit subdivision on Duke Street, roof repairs at the Ritz Hotel on Piccadilly, an amendment to a consented elevation and basement parking scheme on St George Street, and shopfront redecoration and signage on South Molton Street. That mix, office refurbishment plus luxury retail fit-out plus hotel fabric, is a fair description of what Mayfair actually is, and we use it in credit papers to substantiate occupier demand rather than asserting it.
Property types we finance between Bruton Street and New Bond Street
Prime office townhouses and mansion blocks
Small high-specification floorplates let to investment managers, priced on interest cover at 140 to 160%.
Luxury retail units
International brand frontages on New Bond Street, Duke Street and South Molton Street, valued on covenant and unexpired term.
Hotels and private members' clubs
Trading assets underwritten on accounts with goodwill stripped out, LTV 60 to 70%, 7.0 to 9.0% pa.
Owner-occupied professional floors
Investment managers, law firms and advisory businesses buying their own space on EBITDA cover of 1.3 to 1.5x.
Refurbishment and repositioning stock
Buildings bought between lettings and reworked to current specification, bridged at 8.5 to 11.0% pa.
Mews and ancillary commercial buildings
Smaller rear-of-street assets serving the main frontages, funded on the same investment tests at a lower ticket.
Structures used on Mayfair office and retail buildings
A let office or retail building routes through a commercial investment mortgage at 6.5 to 8.5% on interest cover. A firm buying its own floors routes through an owner-occupier commercial mortgage at 6.0 to 7.5% on EBITDA cover. Hotels and members' clubs go through a trading business mortgage at 7.0 to 9.0%. A building bought between lettings and refurbished before re-letting takes a bridge-to-let at 8.5 to 11.0%. Investors holding several W1 buildings on separate facilities use portfolio refinance at 6.5 to 8.0% to consolidate onto one covenant test. Every facility described here is unregulated lending outside the FCA's regulated mortgage perimeter, and we do not hold FCA authorisation because the products we arrange are unregulated.
Commercial investment
Prime let offices and luxury retail on larger single tickets, interest cover stressed at 140 to 160%, LTV 65 to 75%, 6.5 to 8.5% pa.
Owner-occupier
Investment managers and professional firms buying their own floors, EBITDA cover 1.3 to 1.5x, LTV to 75%, 6.0 to 7.5% pa.
Trading business
Hotels and private members' clubs underwritten on trading accounts, LTV 60 to 70%, 7.0 to 9.0% pa.
Commercial bridging
Buildings bought between lettings and refurbished to current specification, 8.5 to 11.0% pa.
Portfolio refinance
Several W1 buildings consolidated onto one covenant test at 6.5 to 8.0% pa.
Lender appetite at Mayfair ticket sizes
Mayfair deals run on larger single tickets, a shorter panel and longer credit processes than the rest of central London. Above a certain size the market is effectively the real-estate teams at NatWest, Lloyds, Barclays and Santander, writing 60 to 65% LTV at the bottom of the 6.5 to 8.5% band, plus OakNorth and Handelsbanken on relationship-led cases where the sponsor is known. The smaller end, including mews buildings and single-floor investments, moves far quicker with Shawbrook and InterBay Commercial. Cynergy Bank and LendInvest fund repositioning and part-vacant cases. The short leases typical of hedge fund and family office tenants are the recurring credit issue, and we deal with them in the paper by evidencing covenant strength rather than lease length.
Property types we finance in Mayfair
Asset classes most active in Mayfair, each linked to the dedicated finance structure, lender appetite and typical terms for that property type.
Mayfair commercial mortgage rates, fees and deposit
The commercial mortgage rates we are placing in Mayfair at mid-2026 sit at 6.5 to 8.5% pa for the dominant local profile, which here is prime office investment, where lot sizes are large and valuations are contested. Expect loan to value of 65 to 70%, which puts the deposit or retained equity at roughly a quarter to a third of the value of the property. Owner-occupied business borrowing prices from 6.0 to 7.5% pa, commercial investment from 6.5 to 8.5% pa, and trading businesses from 7.0 to 9.0% pa. A commercial remortgage on an asset you already hold in W1J, W1K, W1S runs 6.0 to 8.0% pa.
Costs beyond the rate are where Mayfair deals are won or lost. Arrangement fees run 1.0 to 2.0% of the facility. Valuation fees start around £1,500 on a single unit and reach £8,000 or more on a multi-let London building, and the RICS Red Book valuation is the critical path on almost every case, so we instruct it in week one. Legal costs run £4,000 to £15,000. Stamp duty land tax applies at the non-residential rates. Check early repayment charges before you fix, because a five-year fix broken in year two is rarely the cheapest way to repay.
Bridging finance in Mayfair, and when it is the right answer
Not every Mayfair purchase fits a term facility on day one. An auction lot, a vacant unit that needs letting before a lender will price it, or a change-of-use scheme awaiting consent all point at commercial bridging first. Bridging loans run 8.5 to 11.0% pa, or 0.70 to 0.95% per month, over three to twenty-four months, and exit onto a commercial mortgage once the asset is income-producing. We only recommend bridging finance where the exit is genuinely identified and underwritten, because an unplanned bridge is the most expensive money in commercial finance. If the term lender will take the deal now, we will tell you to skip the bridge.
Which Mayfair commercial mortgage lenders to approach
There is no single best lender for Mayfair commercial property, only the right lender for this building on this week's credit appetite. High-street commercial lenders price keenest on prime business: Lloyds, NatWest, Barclays and Santander all compete where the covenant is strong. Challenger lenders such as Allica, Aldermore, Cambridge and Counties, OakNorth and Paragon take most of the SME and mid-market finance in W1J, W1K, W1S. Specialist lenders, Shawbrook, InterBay Commercial, LendInvest, Cynergy Bank, Together and Hampshire Trust, cover the semi-commercial, multi-let and shorter-lease commercial finance the high street declines.
Comparing those finance options properly is the work. Most brokers send a deal to two lenders they know. We benchmark it across the panel, because the difference between the third-best and the best quote on a Mayfair commercial property is usually worth more than every fee in the transaction combined. We arrange commercial mortgages, commercial remortgages, portfolio facilities, second charges and bridging loans. We do not arrange unsecured business loans, and we do not arrange buy-to-let mortgages on residential property, so if that is what your deal needs we will say so and point you elsewhere rather than waste a month finding out.
On eligibility, the property finance question we are asked most in Mayfair is what a lender needs before it will commit. For owner-occupied business, two years of filed accounts is the usual minimum, though twelve to eighteen months places comfortably in well-understood sectors. For investment properties the eligibility test is about the tenant, the lease and the cover ratio rather than about you personally. Clean credit for the company and its directors matters throughout, and a full inspection rather than a desktop valuation is worth insisting on, because a thin report can cost five to ten percentage points of LTV. Send us the property market context you already have, the lease or the accounts, and we will tell you which lenders will look at it before you spend anything.
Live commercial planning in Mayfair
33 commercial-relevant applications sit on the register for this area. Each one is a building changing use, changing hands or changing size, and most of them need finance at some point in that process. Read on 2026-07-26.
- 26/02815/TCH
17 Bruton Street London W1J 6QB
Proposed use of the highway forecourt measuring 8.9m by 0.37m for the placing of 7 branded planters.
W1J 6QBView on portal → - 26/03551/FULL
85 Duke Street London W1K 5PG
Alterations to shopfronts in connection with subdivision of retail unit into two units. [Linked to 26/03552/LBC]
W1K 5PGView on portal → - 26/03501/LBC
Fourth Floor 40 New Bond Street London W1S 2RX
Reconfiguration and refurbishment of the existing office at level 4, installation of new air-conditioning unit within existing acoustic enclosure at roof level, new associated pipework and installation of new louvres within rear windows. [Linked to 26/03500/FULL]
W1S 2RXView on portal → - 26/03500/FULL
Fourth Floor 40 New Bond Street London W1S 2RX
Reconfiguration and refurbishment of the existing office at level 4, installation of new air-conditioning unit within existing acoustic enclosure at roof level, new associated pipework and installation of new louvres within rear windows. [Linked to 26/03501/LBC]
W1S 2RXView on portal → - 26/03485/FULL
25 Hill Street London W1J 5LW
Replacement linked two-storey annex with roof terrace, rebuilding of rear mansard roof and creation of roof terrace. Reconfiguration and landscaping of garden to rear of 27 Hill Street and erection of pavilion building with new access point from Chesterfield Hill; replacement pla
W1J 5LWView on portal → - 26/03404/LBC
The Ritz Hotel 150 - 156 Piccadilly London W1J 9BR
Replacement of slate roof tiles on mansard roofs of Piccadilly, Green Park and Arlington Street elevations of the Ritz Hotel.
W1J 9BRView on portal →
Source: the Westminster Public Access planning register, filtered for Class E, B2 and B8 uses, change of use into commercial, and trading-business consents. Planning activity is a market signal, not a measure of commercial lending volume.
Why we do not quote a median for Mayfair
Only 23 open-market residential transactions completed in W1J, W1K, W1S postcode districts in the 12 months to 2026-05-29. That is too small a sample to quote a reliable median, and it reflects how little of this area is residential. We assess values here from commercial comparables and lender valuations rather than Land Registry medians.
That scarcity is the point. Where almost nothing residential changes hands, almost everything is commercial, and the valuation conversation moves from comparables to income. Lenders here underwrite the lease, the covenant and the yield rather than the price per square foot of the flat next door.
Mayfair commercial mortgage FAQs
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