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Sellers' Reference Guides

Practical reference guides answering the questions UK leasehold flat sellers ask most often. Each guide covers one topic in depth, from checking your lease length to selling with a problem the buyer's lender will not like.

A woman at her kitchen table holding a printed guide in one hand and a mug of tea in the other, with a laptop beside her and a brick block of flats through the window

Practical Answers for Leasehold Flat Sellers

The Guides section answers the 'what does this mean for my sale' questions that come up when you sell a leasehold flat. Each guide is a standalone reference: one topic, covered in enough depth that you can read it once and act on it.

Four of the guides help you find things out: how many years are left on your lease, how to get a copy of your lease and title documents, who your freeholder and managing agent are, and what it costs to sell. The rest deal with a specific problem that can slow a sale or cut the price: a missing freeholder, a defective lease, a flat above a shop, major works on the way, structural cracks or subsidence, capital gains tax on the proceeds, a share of freehold that has not been kept in order, service charge arrears or a dispute with the freeholder, damp or mould, a lease extension that is still in progress, alterations made without the freeholder's consent, and cladding or fire safety works that are still outstanding. Each one links out to the wider site sections that cover the same topic from a different angle.

The aim is the same as the rest of the site: practical, honest information from inside the leasehold market. Where Sell Flat UK is one of several routes you might consider, the guide says so. Where an estate agency sale or auction is the better route for your situation, the guide says that too.

Sellers' reference guides for UK leasehold flats: practical answers to common questions

In-Depth Guides

Sixteen reference guides, each covering one topic in depth.

Checking a lease online at a kitchen table: hands on a laptop, a printed title register and a row of London houses through the window

How to Check How Many Years Are Left on Your Lease

How to find the remaining lease term from your lease document or the HM Land Registry title register, why you count from the original start date and not your purchase date, and what the number means for your sale.

Read the full guide →
An empty office chair pushed back from a dusty desk with an old telephone and unopened post, lit by a window: the absent freeholder

Selling a Flat With a Missing Freeholder

What a missing freeholder means in practice, why it surfaces during a sale, the effect on value (typically 10 to 30 percent below market), how to trace the freeholder, the vesting order route and your options to fix the problem or sell as it stands.

Read the full guide →
Printed invoices and a solicitor's letter with a set of front door keys, a calculator and a mug of tea on a kitchen table

How Much Does It Cost to Sell a Leasehold Flat?

The costs of selling a leasehold flat: estate agent and solicitor fees, the management pack and other leasehold extras, early repayment charges and capital gains tax, a worked example for a £300,000 flat and a comparison of the three sale routes.

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An old hand-coloured lease plan on a desk beside a stapled lease

Selling a Flat With a Defective Lease

What makes a lease defective, why lenders refuse to lend on one, how to check your lease before you sell, the four ways to fix it from a deed of variation to a tribunal application, and how to sell with indemnity insurance or to a cash buyer.

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A London parade of shops with two floors of flats above

Selling a Flat Above a Shop or Commercial Premises

Why many lenders restrict flats above shops, takeaways and pubs, which businesses worry them least, the typical discount by type of business, the leasehold quirks of mixed-use buildings and the routes to a sale.

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A mansion block of flats wrapped in scaffolding for roof works

Selling a Flat With Major Works Planned

How section 20 major works are charged, who pays when a flat is sold, why disclosing a notice early decides whether the cost is negotiated or fully discounted, how buyers react and your options, including retentions.

Read the full guide →
An empty flat between tenancies with keys and a folder on the windowsill

Capital Gains Tax When Selling a Flat

When you pay capital gains tax on selling a flat and when you do not, the 2026/27 rates and allowance, the costs you can deduct including a lease extension, private residence relief for a former home, and the 60-day deadline.

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A fine stepped crack running through the red brickwork of a block of flats

Selling a Flat With Structural Problems or Subsidence

Why cracks and subsidence are harder to deal with in a flat than a house, who is responsible for the structure, how buyers, lenders and insurers react, the typical effect on price and the paperwork that keeps a sale on track.

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Three neighbours chatting outside a converted Victorian house in London, with a single black front door behind them

Selling a Share of Freehold Flat

What passes to the buyer along with the lease, how lenders see it, what to do when the freehold company has been struck off or a co-owner will not sign, and the effect on price when the paperwork has not been kept up.

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A grey-haired man in glasses sitting at a kitchen table, one hand in his hair, frowning at an opened letter

Selling a Flat With Service Charge Arrears or a Dispute

How arrears are cleared from the proceeds on completion, what to do when the equity will not cover them, how to sell while a dispute with the freeholder is running, retentions, and what each situation does to the price.

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A woman wiping condensation from the inside of a sash window with a cloth, with a few faint mould specks in the corner of the frame

Selling a Flat With Damp, Condensation or Mould

How to tell condensation, penetrating and rising damp apart, who has to fix each one in a block, how surveyors and lenders react, what the repairs cost and what each situation does to the price.

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A solicitor across a desk from a couple, pointing to a letter on the desk, with a London street through the window behind

Selling a Flat While a Lease Extension Is in Progress

How a section 42 claim passes to the buyer with your valuation date, why an informal deal cannot, the deadlines that keep running during a sale, how the premium is handled in the price and what lenders need on completion day.

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A woman at a kitchen table reading a title plan, the map faintly visible through the back of the sheet, with a laptop beside her

How to Get a Copy of Your Lease, Title Register and Title Plan

What each of the three documents tells you, how to find your title number, the £7 online register and plan, the £11 postal route for the lease itself, the free places to look first and what to check when they arrive.

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A woman in an open-plan flat with her arms folded around a folder of papers, looking up at the beam where a dividing wall has been removed

Selling a Flat With Unauthorised Alterations

What counts as an alteration, what your lease allows, how a buyer's solicitor finds out, the choice between a retrospective licence and indemnity insurance, why you tell your solicitor before the freeholder, building regulations, and the effect on price.

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A man at the window of a modern flat with his hands in his pockets, looking out at scaffolding on the block opposite where the cladding is being replaced

Selling a Flat With Cladding or Fire Safety Works Outstanding

The three things a lender looks for before it will lend on an unremediated building, the EWS1, landlord's certificate and deed of certificate explained, where the money for the works comes from, the 11-metre line, and what each situation does to the price.

Read the full guide →
A woman by the window of her flat with a phone to her ear, holding an opened letter, a laptop open on the windowsill

How to Find Out Who Your Freeholder and Managing Agent Are

Who is who in a leasehold building, where their names appear in your own paperwork, the £7 freehold title register, the written request the law says must be answered within 21 days, how to check a company or an agent, and what a sale needs from each of them.

Read the full guide →

The Guides section sits alongside several others, each covering a different angle of the leasehold flat sale.

  • Legal matters: the documents and obligations that apply to all leasehold sales (LPE1 management pack, TA7 leasehold information form, ground rent issues, no-subletting clauses).
  • Timeline guides: how long a sale takes by route, the most common hold-ups, and how long a deed of variation can take.
  • Sale routes: estate agency sale, auction and direct sale to a cash buyer, with honest pros and cons of each.
  • Valuation guides: how leasehold flats are valued, marriage value and lease extension premiums.
  • Selling situations: selling an empty flat, an inherited flat, a flat after a fallen-through sale.
  • Mistakes to avoid: common errors UK leasehold sellers make, including short lease pitfalls and quick sale company tactics.

How to Use These Guides

  • Read the guide that matches your specific question first. Each guide is self-contained and answers its question directly. Cross-links pick up where additional context is useful.
  • Use the guides to ask better questions of professionals. The guides are not legal advice. They are background reading that helps you frame the right questions when you speak to a solicitor who knows leasehold, an estate agent or a cash buyer.
  • Where more than one guide applies, read them all before deciding. A short lease with a missing freeholder, for example, sits across the lease length guide, the missing freeholder guide and the marriage value guide in the Valuation section. Each adds a piece of the picture.

The guides cover the law and practice of England and Wales. Where a point applies only in London, such as the higher lease extension premiums that come with central London land values, the guide says so. Scotland and Northern Ireland have different systems of flat ownership and the guides do not apply there.

If your question is not covered, call 020 7183 5114 or ask through our free valuation form. We are happy to talk a situation through even where the right route turns out to be an estate agent or an auction rather than a sale to us.

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