HMO Mortgage FAQ Library

Question 1

Can you get 100% development finance?

David Sampson · Accepted Answer

Some facilities can cover a high share of cost when there is extra security or a strong track record. This page does not treat 100% of cost or 100% of GDV as a published HMO development product. Cash equity is usually required. Ask for a dated illustration on the scheme.

Question 2

How profitable are HMOs?

David Sampson · Accepted Answer

Profit is rent after voids, bills, finance and tax — not a brochure yield. A finished HMO can outperform a single let on the same street and still lose money if the build overran or the refinance GDV was optimistic. There is no single profit figure on this page.

Question 3

Are HMOs still a good investment?

David Sampson · Accepted Answer

They can be, where planning, licensing and room demand support the GDV you used to borrow. They are not a good investment if you modelled a seven-bed sui generis house on a C4 exit. This page is about funding the build, not a yield promise.

Question 4

How much does HMO make per room?

David Sampson · Accepted Answer

Room rent is local. A lender’s GDV uses the rents the valuer will accept, not a national per-room average. There is no published per-room profit on this page.

Question 5

Why are people selling their HMOs?

David Sampson · Accepted Answer

Landlords sell for the same reasons as any investment: a fix ending, a licence they cannot renew, a planning cap, or a better use of the capital. A sale can also be the exit from a development facility. It is not evidence that development finance has closed.

Question 6

What is HMO development finance?

David Sampson · Accepted Answer

A short-term loan to buy land or a house and build or convert it into an HMO. Funds are drawn against cost and finished value, usually with a monitoring surveyor. It is not a term HMO mortgage. The usual exit is a refinance or a sale.

Question 7

How much can I borrow for an HMO development?

David Sampson · Accepted Answer

The binding figure is the lower of loan-to-cost and loan-to-GDV on the named lender’s offer. This page does not publish a single LTC or LTGDV percentage. Model both, then ask for a dated illustration.

Question 8

What is LTGDV?

David Sampson · Accepted Answer

Loan-to-gross-development-value is the loan as a percentage of the lender’s finished HMO value. It sits beside loan-to-cost. If cost says you can borrow more than the finished value will support, GDV wins.

Question 9

Do I need planning before applying?

David Sampson · Accepted Answer

Many development lenders want a credible planning route before they complete, and almost all want lawful HMO use before the last money or the refinance. C3 to C4 can be permitted development unless Article 4 removes it (Use Classes Order 1987, SI 1987/764). Seven or more occupiers is sui generis and needs permission.

Related reading: HMO Development Finance Requirements: Lender Criteria Explained · HMO Development Finance Rates & Fees Explained (2026)

David Sampson · Updated 22 October 2026

Question 10

How do I exit development finance?

David Sampson · Accepted Answer

Refinance the finished, licensable house onto a term HMO or commercial HMO mortgage, or sell it. Build refinance legal time into the facility term. An expired development loan with no term offer is how people take a second, more expensive bridge.

Question 11

What are the occupancy rules for an HMO?

David Sampson · Accepted Answer

In England a house is usually an HMO when three or more people who form more than one household share a kitchen, bathroom or toilet. A remortgage lender will lend on the licensed occupancy, not the brochure bedroom count.

Question 12

Can I remortgage a shared ownership property?

David Sampson · Accepted Answer

Shared ownership remortgages follow the housing association’s staircasing and consent rules. That is a different product from an HMO remortgage on a privately let shared house. This page is about refinancing a licensed HMO, not a shared-ownership home.

Question 13

What salary do I need for a 300k mortgage?

David Sampson · Accepted Answer

An HMO remortgage is assessed mainly on stressed rent versus the new loan, not a residential income multiple. A £300,000 remortgage stands or falls on the valuer’s rent and the lender’s ICR, plus any residual-income test. There is no single salary figure on this page.

Question 14

When should I remortgage my HMO?

David Sampson · Accepted Answer

Usually three to six months before a fix ends, when you want to raise capital after a revaluation, or when you are exiting a bridge or refurbishment loan onto term debt. Do not leave early without modelling the ERC.

Question 15

Can I remortgage an HMO to release equity?

David Sampson · Accepted Answer

Yes, if the new valuation and stressed rent support a higher loan. The extra is capped by the lender’s LTV and ICR. Fix licence and fire issues before you apply — the new valuer will walk the same rooms.

FAQs | HMO Mortgage Questions Answered