Lease Length Not Stated on a Listing What to Do Next

A blank where the lease term should be is never innocent. Here is exactly how to find the real figure and what it means for your mortgage and resale.

Flatscope 26 August 2026 6 min read

Why the lease length box is sometimes left empty

You have found a flat you love. The listing looks thorough, photos are great, the price feels right. Then you scroll down to the tenure section and where it says lease length there is just a blank, or the word "unknown". That is not an oversight. It is almost always a choice.

Agents are not legally required to display the remaining lease term on a portal listing. Some genuinely do not have the figure to hand at the point of listing. But in a lot of cases the information is available and it simply has not been filled in. Sometimes that is laziness. Sometimes the vendor has not got round to providing the title documents. And sometimes, honestly, the figure is uncomfortable and nobody is rushing to volunteer it.

A short lease is one of the most common reasons a sale falls through or a buyer pulls out late in the process. If the remaining term is below eighty years, the cost of extending it climbs steeply because of something called marriage value, which gets added to the premium you pay the freeholder. Below sixty years and many high street lenders will not offer a mortgage at all. So a missing lease length is a genuine red flag, not a minor admin gap.

How to find the real remaining term yourself

The good news is you do not have to wait for the agent to tell you. You can look it up yourself in about ten minutes.

HM Land Registry holds title register entries for almost every registered property in England and Wales. You can search at the official GOV.UK service and download the title register for three pounds per document. The register will show the original lease length granted and the date it started. From those two pieces of information you can calculate exactly how many years are left.

For example, if the register shows a nine hundred and ninety nine year lease granted on the first of January nineteen ninety, you would subtract the years elapsed from nine hundred and ninety nine. If the register shows a one hundred and twenty five year lease starting in two thousand and five, you are looking at something in the region of one hundred and five years remaining as of today. Do the arithmetic yourself and do not rely on anyone else's verbal summary.

If the property is not yet registered, which is rare but possible with older conversions that have not changed hands recently, you will need the actual lease document. Ask the agent to request it from the vendor's solicitor. If they push back on that, treat it as a further warning sign.

Scottish property law works differently. Scotland abolished the feudal system in two thousand and four and most Scottish flats are owned on a different basis. If you are buying in Scotland, speak to a Scottish solicitor about the specific tenure before applying any of the advice here.

The eighty year rule and why it matters so much

Once you have the figure, you need to know what it means in practice. The eighty year threshold is the one that changes everything.

Above eighty years remaining, extending the lease is relatively straightforward and the premium you pay the freeholder is calculated without marriage value. Below eighty years, marriage value kicks in. This is the freeholder's share of the increase in the property's value that comes from having a longer lease, and it can add tens of thousands of pounds to the extension cost. The closer to zero the lease gets, the bigger that share becomes.

Most mainstream mortgage lenders want to see at least seventy to eighty five years remaining at the end of the mortgage term, not just at the start. So if you are taking a twenty five year mortgage and the lease has eighty two years left today, a lender might see that as only fifty seven years at the end of the term, which puts it outside their criteria. Always check your lender's specific policy, because they vary.

Below sixty years, your pool of willing lenders shrinks dramatically. Below fifty years, you are likely looking at cash buyers only, which hammers the resale value when it is your turn to sell.

Exactly what to ask the agent

Once you have done your own Land Registry check, or if you want to move faster, contact the agent directly with specific questions. Vague questions get vague answers. Be precise.

  1. 1What is the exact number of years remaining on the lease as of today?
  2. 2What was the original lease length and what date did it start?
  3. 3Has a lease extension been started or agreed, and if so what is the proposed new term?
  4. 4Is the vendor eligible to extend the lease under the Leasehold Reform Housing and Urban Development Act nineteen ninety three, meaning have they owned the property for at least two years?
  5. 5What is the annual ground rent, and does it escalate over time?
  6. 6Who is the freeholder, and is there a managing agent?

Write these questions in an email so you have a paper trail. If the agent says they will find out and then goes quiet, follow up once in writing. If you still get nothing useful, that tells you something important about how this sale is being managed.

Do not accept answers like "it is a long lease" or "there is plenty left". Those phrases mean nothing. You need the number.

What a lease extension costs and how to factor it into your offer

If the lease is below eighty years, you should be pricing in the cost of extending it before you decide what to offer. This is not a reason to walk away automatically. It is a reason to do the numbers properly.

Lease extension premiums are calculated using a statutory formula that takes into account the ground rent, the remaining term, and the value of the property. The longer the lease has left, the lower the premium. There are online lease extension calculators that use this formula, and your solicitor or a specialist leasehold surveyor can give you a proper estimate.

You will also pay your own legal costs and surveyor fees, and you will pay a contribution to the freeholder's reasonable legal and valuation costs too. For a straightforward extension on a flat worth around two hundred and fifty thousand pounds with sixty years left, total costs including the premium and professional fees can easily reach fifteen to twenty thousand pounds, though the exact figure depends on the specific circumstances of the property.

If you are buying with a mortgage, your lender may insist the lease extension is sorted before completion, or they may be willing to lend on the basis that you extend immediately after purchase. Check this with your broker early.

One practical option is to negotiate with the vendor to extend the lease before exchange of contracts, with the cost shared or reflected in the purchase price. This is more complex to arrange but it can work, and it means you complete with a healthier lease already in place.

Getting your solicitor involved early

Your conveyancing solicitor will check the lease as a matter of course once you instruct them. But by that point you may have already paid for a survey and spent weeks emotionally invested in the purchase. It is much better to know the lease position before you get that far.

Ask your solicitor to do a quick preliminary review of the title register as soon as you have an offer accepted. Some solicitors will do this at the start of the process as standard. If yours does not offer it, ask explicitly.

A good leasehold solicitor will also flag things beyond the raw term, like onerous ground rent clauses, restrictions on subletting or pets, or service charge histories that suggest a poorly managed building. All of these affect the value and mortgageability of the property.

If you are buying a leasehold property for the first time, it is worth paying a little more for a solicitor who does a lot of leasehold work rather than going with the cheapest option on a comparison site. The difference in fee is usually a few hundred pounds. The difference in what they catch can be worth far more than that.

When to walk away

Not every short lease situation is a dealbreaker. Some are genuinely manageable if the price reflects the cost of extension and the vendor is cooperative. But there are situations where walking away is the right call.

Walk away if the agent or vendor refuses to provide basic lease information after reasonable requests. Transparency is not optional in a property transaction and stonewalling at this stage suggests worse problems ahead.

Walk away if the lease is below sixty years and you need a mortgage, unless you have had a very specific conversation with a specialist broker and found a willing lender.

Walk away if the ground rent is structured to double regularly, sometimes called a doubling ground rent clause. These clauses made many properties effectively unmortgageable and unsellable in recent years, and while legislation has capped new ground rents, older leases with these clauses still exist.

And walk away if the numbers simply do not add up once you factor in the extension cost. A flat priced at two hundred and eighty thousand pounds with a forty five year lease might need thirty thousand pounds spent to make it mortgageable and sellable. If the same flat in good condition with a long lease would be worth two hundred and sixty thousand pounds, you are paying over the odds before you have even started.

The right property at the right price with a clear lease is out there. Do not let the excitement of finding something you like override what the documents are telling you.

Common questions

Can I find out the lease length without asking the agent?
Yes. Download the title register from the HM Land Registry website for three pounds. It shows the original lease length and start date, so you can calculate the remaining term yourself without relying on anyone else.
Is a missing lease length on a listing illegal?
No. Agents are not legally required to display the remaining lease term on a portal listing. But it is a red flag worth investigating, because the figure is usually available and the reason it has been left out is not always innocent.
What happens if I buy a flat and the lease runs out?
In practice a lease almost never runs to zero on a residential property because the law gives qualifying tenants the right to extend. But a very short lease makes the property hard to mortgage and hard to sell, and the cost of extending rises sharply below eighty years. Buying with a short lease without a clear plan to extend it is a serious financial risk.
Can I negotiate the lease extension with the seller before I buy?
Yes, and it is often worth trying. The vendor can start the statutory lease extension process and then assign the benefit of it to you on completion. This is more complex legally and both sets of solicitors need to be experienced in leasehold work, but it can result in you completing with a longer lease already secured.

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Flatscope is informational software, not regulated financial or legal advice. Figures are read from public records at the time of writing and can change. Confirm anything decision-critical with your solicitor or surveyor.