Mortgage for a Leasehold Flat

What is a leasehold flat mortgage?

A leasehold flat mortgage is a mortgage secured on a flat held under a lease (a right to occupy for a fixed number of years, granted by a freeholder) rather than on freehold land. Because the lease is a wasting asset, lenders underwrite the number of years remaining, the ground rent and service charge terms, and the building's condition and management as well as the borrower. Many flats in England and Wales are leasehold, so a mortgage for leasehold flats is a mainstream product; the length of the lease and the terms in it are what change the lending. Residential leasehold flat mortgages are regulated by the Financial Conduct Authority (FCA) under MCOB; most buy to let mortgages are not regulated by the FCA. The government's leasehold property guidance and the Leasehold Advisory Service are the authoritative references on the rights that sit behind the lease. This page covers England and Wales. Flats in Scotland are normally owned outright rather than held on a long lease, and Northern Ireland has its own leasehold law.

Leasehold flat mortgage rates

Leasehold flat mortgage rates are set by each lender for its products, and a long lease with a low ground rent is normally treated like any other flat. A short lease, an unusual ground rent or a building with a cladding issue can narrow the lenders that will consider the flat, and with them the rates available. We compare rates once the lease has been checked. No rate on this page is an offer.

Not sure how many years are left on the lease? Get in touch. We confirm the unexpired term from the Land Registry lease before any lender is approached, because the term, and so the choice of lender, depends on it.

Leasehold flat mortgage criteria

The criteria below combine three kinds of information: our experience, named lender examples and the law. The lease-length, loan-to-value (LTV) and term figures given without a lender's name are Mortgage Lane's working experience of the lenders we use; they are not a quote or a promise. A lender named in the table or in the lease-length and ground rent sections further down is an example of that lender's published criteria on the date shown, and it can change. The law is stated as at 29 September 2026. In a real case the lender, its valuer and your conveyancer decide.

Lease lengths and flat types: how each is mortgaged

Lenders read a leasehold flat in two layers: the lease length sets the term, and the terms inside the lease and the building around it set the risk. The sections below take the lease-length bands first, then the flat types that carry their own underwriting.

Long leases: 90, 99, 125 and 999 years

A flat with 90 or more years unexpired is mortgaged on standard terms. The lease outlasts any term a lender would offer with the required margin to spare, the valuation is routine, and the flat may be eligible for an automated or desktop valuation instead of a visit. The lease itself only comes into underwriting through its ground rent, service charge and any unusual covenants. For lending purposes, a 999-year lease at a peppercorn rent is as close to freehold as leasehold gets.

Even here the number to watch is the 80-year line. A lease at 89 years today reaches it within a decade, and the statutory extension right is exercisable as soon as you own the flat, so some long-lease buyers extend early to fix the cost while it is lowest.

Get in touch about a long-lease flat purchase or remortgage.

More than 80 and under 90 years: extending before marriage value applies

Between 80 and 90 years the term arithmetic works comfortably under either the 50-year or the 35-year rule, but some lenders set a higher minimum lease. For example, Aldermore's June 2026 guide asks for 85 years unexpired at completion, and Nationwide's criteria, checked 29 September 2026, ask for 90 years at application above 85% LTV (both are linked in the 50 to under 70 years section below, and each is one lender's rule that can change). The lease is also nearing the point at which an extension costs much more. Under the valuation rules in force as at September 2026, a lease with 80 years or fewer unexpired attracts marriage value: the freeholder's share of the increase in value that the extension creates, added to the premium. The part of the Leasehold and Freehold Reform Act 2024 that abolishes marriage value is not in force as at September 2026 (the Leasehold Advisory Service reports on commencement). Until it is, extending while more than 80 years remain avoids it.

Some lenders fund the extension by further advance or remortgage against the extended value, and some buyers of flats in this band negotiate for the seller to start the extension so its cost is settled in the price.

Get in touch to time a lease extension against a remortgage.

70 to 80 years: marriage value and the first term squeeze

At 80 years or fewer two things change. Marriage value now sits inside any extension premium, and the term arithmetic starts to bind for mainstream lenders. A 75-year lease supports a maximum 25-year term under the 50-year end-of-term rule, which is workable for a residential buyer; with the specialist lenders we use, which accept 35 years at the end of the term, the same lease supports 40 years. Valuers reflect the extension cost in the reported value, so the lender lends on a figure that already allows for it.

One structure in this band is a purchase with a simultaneous or immediate statutory extension, funded within the mortgage where the lender permits, so the flat moves onto long-lease terms without a second transaction.

Get in touch about a flat with between 70 and 80 years remaining.

50 to under 70 years: short leases, specialist lenders and compressed terms

Below 70 years, in our experience, the choice of mainstream lenders thins quickly and the length of the term becomes the main question in the case. A 60-year lease supports a 10-year term under the 50-year rule and a 25-year term with lenders that accept 35 years, so the monthly payment on the shorter term is much higher. Lenders in this band instruct a full valuation that reflects the cost of extending, review the ground rent closely and want to see the extension plan, because the lease is worth more once it is extended. Not every lender uses an end-of-term rule. The Mortgage Works (property criteria, checked 29 September 2026) states a 70-year minimum lease term, and Aldermore's June 2026 property and valuation policy guide asks for at least 85 years unexpired at completion. Others use a different end-of-term figure: Nationwide (property and construction criteria, checked 29 September 2026) asks for 55 years at application and 30 years remaining after the mortgage term ends, rising to 90 years at application above 85% LTV. Each is one lender's published rule and can change.

Some sellers in this band serve the Section 42 notice before the sale so the buyer takes over the claim. Since 31 January 2025 the buyer can also serve their own notice on completion, which makes the sequence simpler.

Get in touch about a flat with a lease between 50 and 70 years.

Under 50 years: the 35-year rule, and bridging below it

In our experience most lenders will not lend at all where fewer than 50 years would remain at the end of the term, so a lease under 50 years gets no term product from the mainstream. The specialist lenders Mortgage Lane uses for short leases lend where at least 35 years will remain at the end of the term. A 45-year lease therefore supports a 10-year mortgage, and a 40-year lease a 5-year one. Those short terms are entirely workable on interest-only buy to let, where the monthly payment does not change with the term. They are much harder on residential capital repayment, where a 10-year term raises the monthly payment by about 80% against a 25-year one (worked below).

Where the lease is too short even for a term under the 35-year rule, or where the borrower wants to extend first and refinance at the extended value, bridging finance is the usual route in our experience. Bridging lenders can lend on short leases against a credible exit: the statutory lease extension followed by a term remortgage. Bridging is short-term and usually costs more than a term mortgage, and if the extension or remortgage is delayed the loan still has to be repaid, so the exit is checked before you commit. The mechanics of short-term finance are in our bridging loan guide.

Speak to a Mortgage Lane specialist before offering on a flat with under 50 years: the structure decides whether it can be bought at all.

Share of freehold flats

A share of freehold flat is still a leasehold flat: the owner holds a lease and a share in the company or joint ownership that holds the freehold. Lenders generally treat share of freehold as leasehold, so the lease length still governs the term. The ground rent is usually nominal, and the lender reviews the freehold company's constitution and the building's management arrangements. Because the leaseholders control the freeholder, extending the lease is typically straightforward and cheap, but it still needs a formal deed of variation or a new lease.

Get in touch about a share of freehold purchase.

Ex-council and high-rise leasehold flats

Lenders assess ex-local-authority leasehold flats at three levels, the flat, the block and the estate, looking at construction, height, maintenance standards, the mix of private and council ownership and resale demand. High-rise blocks get the closest scrutiny of external wall systems and fire risk assessments. Leases granted under Right to Buy are governed by the Housing Act 1985 and are usually long, so the lease length rarely limits the mortgage; the block is what lenders test. The block-level underwriting for landlords is in our buy to let mortgage guide. System-built and other non-traditional blocks are covered on our non-standard construction mortgages page, and the flat, block and estate tests in full on our mortgage on an ex-council flat page.

Get in touch with the block's documentation before making an offer.

Flats with cladding, EWS1 and the Building Safety Act

Where a building's external wall system needs assessing for a mortgage valuation, lenders may ask for an EWS1 form (the external wall form used in the RICS valuation guidance) or accept other evidence, such as a fire risk appraisal of the external wall (FRAEW). The outcome decides whether, and on what terms, the flat can be mortgaged. RICS has published a second edition of that guidance, effective from 1 November 2026, which sets out when an EWS1 form should be requested. The Building Safety Act 2022 introduced leaseholder protections that limit remediation costs for qualifying leases in buildings in England with at least two flats that are at least 11 metres high or have at least five storeys (Wales has its own building safety arrangements), and lenders now underwrite the flat's qualifying status and the building's remediation position together. A flat in a building with an unresolved cladding position can be financed with some lenders and not others, depending on the EWS1 outcome, the remediation position and each lender's own policy.

Get in touch with the EWS1 outcome and the leaseholder deed of certificate (the form that shows whether a lease qualifies for the protections).

New-build leasehold flats and ground rent

Most new long residential leases granted in England and Wales on or after 30 June 2022 cannot charge more than a peppercorn ground rent, meaning in practice nothing. This comes from the Leasehold Reform (Ground Rent) Act 2022, which has applied since 30 June 2022, and to leases of retirement homes since 1 April 2023. The Act covers a "regulated lease": a long lease of a single dwelling, granted for a premium, and not under a contract made before the start date. Some leases are excepted, such as business leases and community housing leases, and shared ownership leases and some replacement leases follow their own rules, so the conveyancer confirms how a particular lease is treated.

Older leases, including new-build leases granted before the Act, can contain escalating or doubling ground rents that lenders scrutinise. A rent that doubles at short intervals, or rises beyond a lender's limits, can lead a lender to decline the flat or to ask for the lease to be varied before completion. The ground rent section below sets out how lenders' limits differ. Lenders set their conveyancing requirements in the UK Finance Mortgage Lenders' Handbook, which a conveyancer acting for a lender follows.

Get in touch about a new-build leasehold flat or a lease with an escalating ground rent.

Ground rent: what lenders check and what the law says

Ground rent is the yearly rent a leaseholder pays the freeholder under the lease, and lenders look at how it can rise as well as at what it is today. Three terms in the lease decide whether a ground rent fits a lender's criteria:

• The level, usually measured as a percentage of the property's value or as a pound figure a year.
• The escalation, meaning how the rent rises: by fixed increases, by increases linked to the Retail Prices Index (RPI), by compounded RPI, or under a clause that doubles the rent at set intervals.
• The review interval, meaning how often the rent can change. Some lenders also test the rent the lease will reach at future reviews during the mortgage, as well as today's figure.

How lenders' limits differ

There is no single market limit. Limits on the level, doubling and review intervals vary by lender, and some lenders decline a rent that doubles every 15 years or less. Four published examples follow. Each is one lender's own rule on the date shown and can change; none is Mortgage Lane's panel or a decision on any application.

• Skipton Building Society, buy to let (buy to let criteria, checked 29 September 2026): ground rent no more than 0.1% of the lower of the property's value or purchase price, at least 10 years between increases, RPI-linked increases accepted but not compounded RPI, and no clause that doubles the rent.
• Aldermore (property and valuation policy guide, June 2026): a maximum ground rent of the greater of £500 a year or 0.1% of the property's value, with a doubling rent accepted where it doubles no more often than every 20 years.
• Nationwide Building Society (property and construction criteria, checked 29 September 2026): declines a lease where the ground rent is 0.5% of the property's value or more, the rent is reviewed every 5 years or less, it doubles every 5, 10 or 15 years, or it rises by compounded RPI.
• Virgin Money, residential (leasehold criteria, checked 29 September 2026): periodic increases that remain reasonable, usually linked to RPI, and no multiplier that doubles the rent every 15 years or less.

Illustrative only. On a flat valued at £200,000 and bought for that price, a ground rent of £300 a year is 0.15% of value. On the level alone, that is above Skipton's buy to let limit of 0.1% (£200), within Aldermore's maximum (the greater of £500 or £200, so £500) and below Nationwide's 0.5% decline point (£1,000). The escalation and review terms are then checked separately, which is why the same flat can fit one lender's criteria and not another's.

The law in England and Wales, as at September 2026

A high ground rent can no longer make a long lease an assured tenancy. Before 27 December 2025, a long lease with a ground rent above £250 a year (£1,000 in Greater London) could in some cases be treated as an assured tenancy under the Housing Act 1988, which could open the way to possession proceedings under the assured tenancy rules; this is partly why lenders used those figures. Section 31 of the Renters' Rights Act 2025, in force from 27 December 2025 under the Act's own section 145(5)(a), means a lease granted for a fixed term of more than 21 years cannot be an assured tenancy, however high the ground rent and whenever the lease was granted. A limited transitional exception covers cases where possession proceedings based on a valid notice had already begun, or could still be brought, before that date. The section is law in England and Wales. In practice it matters in England, because in Wales the assured tenancy rules no longer apply to homes (see below); the government's leasehold toolkit for Wales (May 2026) also describes the change.

Wales has its own renting law as well. Since 1 December 2022 the Housing Act 1988 assured tenancy rules have applied only to homes in England, and under the Renting Homes (Wales) Act 2016 a tenancy for a fixed term of more than 21 years is not an occupation contract, so the Welsh renting regime does not reach a long residential lease either.

Lenders' own limits still apply. The legal change removes the assured tenancy risk, but lenders' criteria on the level, doubling or review of ground rent stay as they are, and some published criteria still use the old £250 and £1,000 figures. For example, West Bromwich Building Society's lending and security guidelines (last updated August 2026) still require an assured shorthold tenancy (AST) indemnity (protection for the lender against the old assured tenancy risk) where the ground rent is, or will become, more than £250 a year (£1,000 in London) during the mortgage, and Family Building Society's buy to let ground rent criterion (last updated 7 November 2025) will not consider a ground rent above £250 outside Greater London or £1,000 inside it. Your conveyancer checks the chosen lender's current instructions.

New leases are covered by the 2022 Act, and further reform is only proposed. Most new long residential leases granted on or after 30 June 2022 carry a peppercorn ground rent under the 2022 Act (see new-build leasehold flats above). For existing leases, the Leasehold and Freehold Reform Act 2024 has passed, but as at September 2026 most of its lease extension and ground rent measures, including a new right to vary a long lease to a peppercorn rent, are not in force, and it does not cap ground rent in existing leases. The government's draft Commonhold and Leasehold Reform Bill would cap ground rents in England and Wales at £250 a year, changing to a peppercorn after 40 years. It is a draft Bill, not law, so a lender assesses the lease as it stands.

Get in touch with the lease, or the address and we will obtain it, and we will check the ground rent clause against the lenders we use before you commit.

How a leasehold flat mortgage is arranged

1. Lease check: we obtain the lease from HM Land Registry and confirm the unexpired term to the day, the ground rent and its review pattern, the service charge obligations and any restrictive covenants before the term arithmetic is run.
2. Structure: we calculate the maximum term under the 50-year and 35-year rules, decide the extension route (extend before completion, at the same time, immediately after, or bridge and then extend) and settle whether the case is residential or buy to let, because interest-only changes how affordability is assessed.
3. Lender match and valuation: the case goes to lenders whose policy accepts the lease length, ground rent and building, and the valuation is instructed with the extension plan disclosed so the valuer reports on the right basis.
4. Legal work and completion: the replies to the leasehold property enquiries form (LPE1) and the management pack are reviewed, any Section 42 notice is served or assigned, the EWS1 and building safety documents are provided, and completion is timed with the lease extension where the two run together.

The lease-term arithmetic, worked

A short-lease case turns on one subtraction, years unexpired minus the lender's end-of-term minimum, which gives the maximum mortgage term, and on what that term does to the monthly payment.

Step 1. The maximum term

The lender's own maximum term caps the result. With the lenders we use that is 40 years, so where the lease alone would allow more than 40 years, the first table below shows the 40-year maximum, and a lender's maximum age at the end of the term, where it sets one, can shorten it further. In that table the middle column applies the 50-year rule that most lenders use in our experience, and the right-hand column applies the specialist lenders' 35-year rule. Leases in the short rows at the bottom are where the choice of lender matters most.

Step 2. What the term does to the payment

On a capital-repayment mortgage, shortening the term raises the monthly payment sharply, because more capital is repaid every month; on an interest-only mortgage, the term makes no difference to the payment. The second table below sets out the illustration: £100,000 at 5.2%, the illustrative rate used across our guides and not a product rate.

Illustrative only. Rate assumption of 5.2% is not an offer; total interest excludes fees.

Step 3. The 45-year lease, residential versus buy to let

For a residential buyer, a 45-year lease supports a 10-year term with the specialist lenders we use (35 years at the end of the term). On capital repayment, the payment on £100,000 is £1,070 a month against £596 over 25 years, about 80% more, and the affordability assessment must carry that payment in full, because the lender tests the actual contractual payment. For many residential borrowers it is the short term that fails the case, so extending the lease first (funded by bridging or a further advance where available) and then taking a long-term residential mortgage is often the only workable residential route.

On an interest-only buy to let mortgage, the same 45-year lease costs £433.33 a month whether the term is 10 years or 35, because interest-only payments do not depend on the term. The short term therefore does not change the rental coverage test. The 10-year term leaves 35 years on the lease at the end. The whole loan is still due at the end of the term, and with 35 years left the 35-year rule leaves no room for a new term, so refinancing depends on the lease having been extended and the extension plan matters from day one. Short-lease flats usually sell at a discount that reflects the cost of extending.

Step 4. Extending the lease after purchase

The statutory lease extension right is exercisable from the day of completion. Section 27 of the Leasehold and Freehold Reform Act 2024, which abolishes the two-year ownership requirement under the Leasehold Reform, Housing and Urban Development Act 1993, came into force on 31 January 2025, so a buy to let investor who completes on a short-lease flat can serve the Section 42 notice on the freeholder immediately. Before that date a new owner had to wait two years, or take over a notice assigned by the seller. The sequence is:

1. Buy on the short-term interest-only mortgage (or on bridging where the lease is too short for a term product).
2. Serve the Section 42 notice. Under current law (as at September 2026), a statutory extension adds 90 years to the existing term at a peppercorn ground rent. The premium is set by valuation and, if disputed, decided by the First-tier Tribunal (Property Chamber) in England or the Leasehold Valuation Tribunal in Wales. The government's guidance on extending a lease sets out the procedure; the Leasehold Advisory Service publishes the valuation principles.
3. Refinance onto a long-lease buy to let product, where a lender will lend on the extended value. If the new valuation and the lender's rental test support it, this can release some or all of the extension premium as equity.

The costs to price in are the premium itself (higher at 80 years or fewer while marriage value applies), the leaseholder's own valuation and legal fees and, under the rules in force as at September 2026, the freeholder's reasonable costs. The 2024 Act would change the premium calculation, including the provision that abolishes marriage value, move to 990-year extensions and change the rules on the freeholder's costs, but those provisions are not in force as at September 2026; until they are, statutory extensions are valued under the 1993 Act rules.

What decides the case

The lease length is fixed. What can still be chosen is the end-of-term rule (50 or 35 years), the repayment structure (capital repayment or interest-only), the timing of the extension (before, at the same time, after, or bridge and then extend) and a lender whose policy fits all three. We settle those before the valuation is instructed.

Related reading: the buy to let mortgage guide covers interest coverage ratios and the block-level underwriting of flats; the bridging loan guide covers short-term finance where a lease cannot yet carry a term mortgage.