Flats have become much tougher to sell since 2020. If yours has been sitting on the market while the houses down the road fly off, you are not imagining it.
A slow flat sale usually isn’t about the price. It’s about a handful of leasehold snags that quietly shrink your buyer pool before anyone has even booked a viewing.
Fix those, and you can sell fast without knocking thousands off your asking price.
I buy flats for cash every week at Property Rescue, and I resell them afterwards through estate agents. So I see both sides: what makes a flat stall, and what makes it move.
Why Flats Are Harder to Sell Than Houses
Houses have been outselling flats for years now.
Back in the 2021 “race for space”, houses were finding a buyer in about 42 days on average, while flats took around 62 days. That is a 47% gap (Hometrack, 2021).
The gap never really closed. Rightmove’s 2024 analysis found flats were still the slowest property type to sell, taking around 82 days to find a buyer against 57 days for detached homes (Rightmove, 2024).
Why? Because a flat comes with a lease, a freeholder, a managing agent and a set of costs a house buyer never has to think about.
And every one of those is a place where a sale can wobble.
The Four Things That Stall a Flat Sale
In my experience buying flats, the same four issues come up again and again. Get ahead of them and you protect both your speed and your price.
Short Leases: The 85-Year Warning Line
Around 20% of the flats we offer on have a short lease. It is one of the most common reasons a flat gets stuck.
Here’s the number to remember: 85 years and under is where ordinary buyers and their lenders start to get nervous.
Once you drop under that line, lending gets trickier, especially in the current market. Fewer buyers can get a mortgage, so your pool shrinks, and a smaller pool is what really pushes a price down.
The fix isn’t to slash the asking price. It’s to deal with the lease. You can extend it before you sell, or price the extension into a sale to a cash buyer who will take it on as-is.
Steep Service Charges Shrink Your Buyer Pool
Steep service charges make your buyer pool even smaller.
A buyer’s mortgage affordability is worked out including the monthly service charge. High charges eat into what they can borrow, so some buyers simply can’t stretch to your flat even if they love it.
There is a nuance here. Luxury blocks with a concierge, gym or pool carry higher charges, and the people who buy those flats expect it. But there are far fewer of those buyers about, so you are fishing in a smaller pond either way.
What to do: get your service-charge accounts to hand early and be upfront about what the money covers. A buyer who understands the charge is far less likely to panic and walk.
Ground Rent and Whether a Flat Is Mortgageable
Ground rent is a common sticking point.
For years, a ground rent over £250 a year outside London, or over £1,000 a year in London, could make a flat effectively unmortgageable. Some leases with doubling ground rent caused the same problem, depending on the amount.
The reason was a quirk of the law: those leases risked being treated as assured tenancies under the Housing Act 1988, which made lenders very wary.
Did You Know?
From 27 December 2025, the Renters’ Rights Act 2025 removed the “ground rent trap”. Long leases are no longer treated as assured tenancies simply because of the ground rent level, which makes life easier for buyers using a mortgage. High or escalating ground rent can still put lenders off, so always check with your solicitor.
Source: Renters’ Rights Act 2025 (legislation.gov.uk); Today’s Conveyancer
So that is good news. But if your lease has a doubling clause or a punchy ground rent, ask your solicitor whether a deed of variation is worth doing before you market the flat.
The Leasehold Management Pack: The Number One Delay
When we buy a flat, we aim for an ambitious four to six weeks. There is really only one thing that slows a leasehold sale down: the managing agent not issuing the pack in good time.
This pack (often the LPE1 and management information) holds the lease details, service-charge accounts and answers to the buyer’s standard enquiries. Your sale legally cannot exchange until it lands and any questions from it are cleared.
And it is slow. Typical turnaround is 4 to 8 weeks, and some managing agents take longer (Property Passport, 2025).
So here is the single best move you can make: order the pack the day you decide to sell. You do not need a buyer in place to request it. Have it ready and you can knock weeks off your timeline.
How to Sell Fast Without Slashing the Price
Speed and price are not opposites. Sellers usually cut the price because the flat has been sitting, not because it was priced wrong to begin with. Do these three things and you protect both.
- Price it right from day one. Overpricing, then reducing, is what actually costs you money. Rightmove looked at over 300,000 homes and found properties priced correctly from day one were roughly twice as likely to find a buyer as those that needed a reduction. Correctly priced homes sold in about 21 days; reduced ones took an average of 47 days, and the average reduction was 5% of the asking price (Rightmove, 2021). A realistic price on day one beats an ambitious one you chip away at later.
- Get the paperwork ready before you list. Order the management pack early. Pull together your lease, service-charge statements, any ground-rent details and your EPC. The faster your solicitor can answer the buyer’s enquiries, the less time there is for cold feet or lender queries.
- Fix the lease issue, or sell as-is. If a short lease or awkward ground rent is the blocker, extend or vary the lease before selling to reopen the flat to mortgage buyers at full price. Or sell to a cash buyer who takes the problem on and prices it in. Neither means dropping your asking price on the open market just to shift the flat.
The Routes to a Fast Flat Sale
There are three realistic ways to sell a flat quickly. Each suits a different situation.
Estate agent. Best if your lease is long, your charges are sensible and you are not in a rush. Price it right and market it well, and it can move. But you are still exposed to chains and buyers pulling out.
Auction. Good for short-lease or awkward flats, because it attracts cash investors who understand them. Completion usually runs to a few weeks once the hammer falls, though fees and an uncertain final price are the trade-off.
Cash buyer. The fastest and most certain. No chain, no mortgage to wait on, no last-minute renegotiation.
When we buy a flat for cash, we aim to complete in four to six weeks, and the only thing that tends to slow us is that management pack. There are no estate agent fees, and when you use our recommended solicitor we cover your conveyancing costs too.
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When a Cash Sale Is the Right Call (and When It Isn’t)
A cash buyer pays below the open-market figure, typically 75% to 85% of value. The trade-off is speed and certainty against price. If you have time, a long lease and no pressure, a well-priced estate agent sale will usually get you more.
But if you’re facing a broken chain, a repossession, a short lease scaring buyers off, or a flat that has already sat for months, certainty is worth a great deal, and you don’t have to fix every problem first. We buy flats in exactly that state, for cash, with no fees and no chain, so you can move on fast. We take around 100 enquiries a month from sellers whose buyer has just pulled out.
Key Takeaways
- Flats stall over four things: a short lease, steep service charges, ground rent and the management pack. Fix those, not your price.
- 85 years and under is where buyers and lenders start backing away. Extend the lease or sell as-is to a cash buyer.
- The ground-rent “AST trap” ended on 27 December 2025 under the Renters’ Rights Act 2025, but high or escalating ground rent can still deter lenders.
- The managing agent’s pack is the number one delay. Order it the day you decide to sell.
- Correctly priced flats sell roughly twice as fast as ones that need a reduction. Get the price right on day one.
This article is general information, not legal, mortgage or tax advice. Leasehold extensions, deeds of variation, ground-rent clauses and mortgage eligibility depend on your individual circumstances. Always speak to a qualified solicitor or mortgage broker before making a decision. Property Rescue is regulated by the FCA for Sale and Rent Back only (FCA Register 522471), not for general property or legal advice.
Get a free, no-obligation cash offer from Property Rescue. No fees. No chain. No risk. Call 020 8634 0224 or get your free cash offer.