Large HMO Mortgages (7+ Bedrooms)

Large HMO mortgages (7+ bedrooms) explained

A large HMO mortgage is a specialist loan on a house in multiple occupation with a high bedroom or occupier count — typically seven lettable bedrooms or more, which is usually also the point where seven or more occupiers make the planning use sui generis. Lenders treat it as an HMO, not a standard buy-to-let, because rooms are let individually, communal kitchens and bathrooms are shared, and planning, licensing and fire standards bite harder as occupancy rises. It is the usual product for a 7 bed HMO mortgage and for larger shared houses; a six-bed usually sits on a standard HMO mortgage. Compare it with other HMO mortgages once the room count, use class and licence position are clear.

Three numbers matter, and they are not the same. Planning often counts occupiers. The council licence counts people the house is permitted to sleep. The mortgage valuer counts lettable bedrooms that meet size and amenity standards. A brochure “eight-bed” can be a six-person licensed house if two rooms fail the local size test. Reconcile those figures before you instruct a valuer.

Yields on a well-run large house can look strong on a room-by-room rent schedule. Gross yield is annual room rent divided by purchase price; net yield subtracts voids, bills, management, licence fees, insurance and maintenance. A six-bed at £150 a week per room is £46,800 a year before costs — that is a planning number, not a lender offer and not a promise of profit. Stress the rent the valuer will accept, not the brochure total.

That yield is not a reason to model an 85% loan or a high-street rate. The panel is smaller than for a four-bed professional HMO, the valuation method can flip to income, and a missing sui generis consent or fire door will stall the case. This page stays on room-count limits, planning and how finance actually follows those facts.

Lender appetite by bedroom count

Appetite is a band, not a single national cap. The table uses each lender’s own published intermediary page, checked 22 October 2026. Where a live page no longer restates a figure, that is marked. Figures are not a live offer.

Do not read a definition as a limit. A lender that describes “5–7 lettable rooms” is saying when the house is an HMO on its criteria, not that eight rooms are impossible everywhere. Confirm the current cap on the lender’s intermediary page before you bid.

Sui generis planning for 7+ occupants

In England a small HMO (use class C4) is typically three to six occupiers forming more than one household. Once seven or more occupiers share the house, the planning use is usually treated as sui generis — a class of its own — and a change of use needs HMO planning permission. Permitted development from C3 to C4 does not cover that jump. Article 4 directions can also remove C3-to-C4 rights, so a six-occupier house in an Article 4 street still needs permission.

Officers look at amenity, parking, waste, concentration of HMOs and a management plan. Approval often comes with a hard occupancy cap. If the permission says seven, do not model nine rooms of rent for the mortgage. A licence does not grant planning use, and a planning consent does not grant a licence. Lenders ask for both.

Commercial vs bricks-and-mortar valuation for large HMOs

Small licensed houses are often valued on a bricks-and-mortar basis with a cross-check on room rents. Larger houses — especially 7+ bedroom sui generis stock — are more likely to be valued on income: the valuer capitalises the accepted rent after voids, management and running costs. A commercial (investment) figure can sit above or below the vacant-possession comparable. It is the figure the lender will lend against, not the estate agent’s asking price.

Undersized rooms, unlicensed occupancy and missing fire precautions are stripped out of the rent. That is why the brochure bedroom count is not the mortgage bedroom count. If you are remortgaging an established large house, ask whether the new lender will take an income valuation; that decision changes how much you can raise. See how HMOs are valued before you instruct.

Criteria: experience, deposit, ICR

Plan for a 25% deposit (75% LTV) on a licensed large HMO. Some specialists go lower LTV on 10+ bedroom or weaker-postcode stock, or for first-time large-HMO landlords. Do not model 85% unless a named product’s own page publishes it — Kent Reliance’s last guide did not publish 85% LTV, and that book is now closed to new term buy-to-let.

Interest cover is tested on the rents the valuer accepts after a void and cost assumption. This page does not invent a single ICR percentage. The Mortgage Works publishes 175% ICR for all HMO applications on its intermediary HMO criteria page (checked 22 October 2026). Other large-HMO lenders on our panel do not publish one HMO ICR on the pages cited, so treat ICR as “Not published” until the DIP names the test.

Landlord experience of about 12 months on a smaller HMO helps. A few specialists take first-time landlords with a professional agent, usually on six rooms or fewer. Jumping from no experience to a 12-bed conversion is a different case: expect a lower LTV, a tighter panel and a management contract in the pack. Limited-company (SPV) applications are common on larger houses; they do not replace experience or a licence.

Licensing and fire safety for large HMOs

In England a mandatory HMO licence generally applies where five or more people from two or more households share facilities. The old three-storey rule was removed in 2018, so a two-storey six-bed can still need a mandatory licence. Additional licensing can catch smaller houses. Operating without a required licence is a criminal offence and a mortgage breach.

Fire precautions scale with occupancy. The Regulatory Reform (Fire Safety) Order 2005, the LACORS housing fire-safety guide and the Management of Houses in Multiple Occupation (England) Regulations 2006 sit behind council inspection. A large house usually needs a protected escape route, fire doors on risk rooms, a detection system matched to the layout, and a written fire risk assessment. Read the HMO fire regulations guide before you assume a four-bed alarm spec will pass on eight rooms. A missing closer can fail the valuer even when the paper licence is in date.

When a large HMO becomes commercial lending

Room count alone does not flip a case onto a commercial loan. What usually does is a combination of sui generis use, an income valuation, a high unit count, mixed commercial/residential use, or a borrower already on a commercial facility. That is when you want commercial HMO mortgages rather than a house-share HMO product. A 6 bed HMO on C4 with a bricks-and-mortar valuation often stays on the specialist HMO panel. A 12-bed sui generis house valued on yield is more likely to be treated as commercial stock.

Refurbishment and conversion of a large house may need a bridge or staged refurbishment loan first, then a remortgage onto term debt once the licence, planning and fire works are in place. Do not apply for a term large-HMO mortgage on a shell.

How to apply

Put the licence, planning use (C4 or sui generis), occupancy cap, room-by-room rent schedule, floor plans and fire risk assessment in the pack with the usual ID, experience and company documents. Say the bedroom count the council will licence, not only the brochure count. We then match a specialist large-HMO or commercial lender rather than a generic buy-to-let panel. There is no charge for an initial quote.

If you already own the house, an HMO remortgage can release equity after an income revaluation. If you are converting, read HMO refurbishment mortgages and the conversion guide before you strip out the family kitchen. First-time landlords should start on the smaller end of the panel rather than a 10+ bedroom scheme.

Get a large HMO quote

Check how this affects your HMO mortgages enquiry. Tell us the licensed occupancy, the planning use and whether you want a term loan, a remortgage or a conversion facility so we do not send a six-bed C4 case to a commercial desk — or a 12-bed sui generis house to a four-bed panel.

What counts as a large HMO for mortgage purposes?

In short: properties with typically eight or more bedrooms, or five-plus tenants forming more than one household where mandatory HMO licensing applies. Large HMOs generate higher gross rent but need stronger management, fire safety systems, and often professional staff or agents. Lenders treat them as commercial-style risks even when classified as residential. Seven or more occupiers are usually sui generis — see HMO planning permission.

Underwriting and management expectations

Expect detailed scrutiny of gross and net yields, licensing history, HMO management plans, and your experience at scale. LTV may sit around 65–75% depending on location and whether the property serves students, professionals, or supported living. Room layouts, en-suite ratios, and compliance with minimum room sizes all affect valuation. We work with lenders comfortable funding 10–20+ room schemes, not just standard six-bed houses.

Build a realistic budget for communal area maintenance, fire alarm servicing, and higher utility costs — underwriters will stress-test running costs more aggressively than on small HMOs.

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