selling

Downsizing your home: how much equity you release moving from a detached house to a flat

Downsizing your home from a detached house to a flat: the average price gap by English region from the August 2026 UK HPI, stamp duty and costs to take off.

4 min read
Last reviewed 5 November 2026
By Your Property Check team

Part 1 of 7

What the figures show

General information, not legal or financial advice. When people talk about downsizing your home, the first question is how much equity it frees. We can show the size of the gap between average property types, from the UK House Price Index (HM Land Registry and ONS) held in our data, month August 2026, file UK-HPI-full-file-2026-08.csv. For the UK as a whole the average detached home was £443,846 and the average flat was £194,148.

These are averages of different homes in different places. They are not your home's value, and they are not a forecast. Use them to see the scale of the gap and how much it changes by region, then replace them with your own value range.

Part 2 of 7

The gap by English region, August 2026

Region	Average detached	Average flat	Gap	Stamp duty on the flat average
London	£1,164,439	£427,310	£737,129	£11,366
South East	£682,708	£208,529	£474,179	£1,671
East of England	£521,437	£192,035	£329,402	£1,341
South West	£497,091	£173,470	£323,621	£969
West Midlands	£419,192	£138,513	£280,679	£270
England	£472,671	£218,563	£254,108	£1,871
North West	£388,124	£140,000	£248,124	£300
East Midlands	£355,978	£124,216	£231,762	£0
Yorkshire and The Humber	£346,825	£127,998	£218,827	£60
North East	£289,630	£103,648	£185,982	£0

Source: data/region-prices.json, UK HPI August 2026. Stamp duty is Stamp Duty Land Tax (SDLT) on a purchase at the flat average, using the standard residential rates GOV.UK showed when we read them on 5 November 2026: 0% up to £125,000, 2% from £125,001 to £250,000, 5% from £250,001 to £925,000, 10% to £1.5 million and 12% above. England only. Wales and Scotland have their own taxes, covered in our guide to stamp duty in England, Scotland and Wales.

London shows the widest gap, at £737,129, and the North East the narrowest, at £185,982. In every English region the flat average is below half the detached average, so the proportion released is large everywhere, but the pounds depend heavily on where you are.

Part 3 of 7

A worked example: England averages

This is plain arithmetic on the England row, with an illustrative agent fee, not a market rate:

Detached average: £472,671
Flat average: £218,563
Gap: £254,108
SDLT on the flat average: £1,871
Illustrative agent fee on the detached sale at 1.5% plus 20% VAT: £8,508

That leaves £243,729 before conveyancing, surveys, removals and any mortgage you repay. If you still have a mortgage, the amount released is the gap less the balance. Our guide to moving costs lists the other items, and the conveyancing fees guide covers the legal side of the sale.

Part 4 of 7

Costs to take off

Stamp duty. GOV.UK lists the rates above. If buying leaves you owning more than one home you usually pay an extra 5%, but GOV.UK says you can avoid it if the new home replaces your main residence and you sold the old one within 36 months of completing the purchase. If the sale comes second, check the refund rules. Our stamp duty calculator works out the figure for your price.
Agent and legal fees. Citizens Advice describes agent rates from under 1% to 3.5%, plus VAT. See our estate agent fees guide.
Moving costs. Removals, surveys and mortgage fees are in our moving checklist.
Tax. Capital Gains Tax can apply when you sell, and private residence relief may reduce it, so check your own position. See our private residence relief guide.

Part 5 of 7

Inheritance tax and the family home

The residence nil-rate band on GOV.UK is an extra inheritance tax allowance when a home passes to direct descendants. GOV.UK's calculator covers people who downsized or sold their home, but the page we read does not set out the rules, so we do not state them. The page does say the allowance tapers by £1 for every £2 an estate is worth above £2 million. Read our inheritance tax on a house guide and take advice if the estate is large.

Part 6 of 7

When to sell first

Selling first gives certainty about the equity and avoids paying for two homes. Buying first can mean a gap in funding. Our guide to bridging loans explains the alternatives to buying before you sell.

Part 7 of 7

What to do next

Get a value range for your home from real sold prices, then replace the average in the table with it. This page is general information, not legal or financial advice, and averages are not a prediction of what your sale will fetch.

Our take

Use your own value, not the average, for the sums

Our view: the headline gap flatters everyone. The table is a gap between two averages, and the common mistake is to forget that stamp duty, fees and a mortgage balance all come off it. In every English region the flat average is below half the detached average, but the pounds released depend on your postcode.

Start with our free house value check, which gives an honest value range from real HM Land Registry sold prices in your postcode, with the comparable sales shown. Then use the sale method comparison to see net proceeds and timescale by route.

Check my value

Our opinion, drawn from the facts on this page: not advice and not a forecast. We earn from OfferCheck reports and from introducing sellers to cash buyers, so weigh it with that in mind (see our disclosure). We are not authorised or regulated by the FCA.

Questions, answered

Frequently asked questions

How much equity do you release by downsizing from a house to a flat?

The UK average gap between a detached home and a flat was £249,698 in August 2026, from the UK House Price Index. It is a gap between averages. Your figure depends on your home's value, your mortgage and the costs of moving.

Do you pay stamp duty when downsizing?

Usually yes, on the price of the home you buy, at the standard rates. In England the first £125,000 is at 0%. The extra 5% for additional properties can be avoided if the new home replaces your main residence and you sold the old one within 36 months.

Which region releases the most equity when downsizing?

London, in the August 2026 data: £737,129 between the average detached home and the average flat. The North East had the narrowest gap of the English regions at £185,982.

Is downsizing worth it?

That depends on your costs and what you want the money for. Take the price gap, then subtract stamp duty, agent and legal fees, moving costs and any mortgage. The result is the equity actually released.

Does downsizing affect inheritance tax?

It can. GOV.UK's residence nil-rate band calculator covers people who downsized or sold their home. The page we read does not set out the rules, so check GOV.UK or take advice for your estate.

Where this comes from

Sources

Last reviewed 5 November 2026 by the Your Property Check team. This page is general information, not legal, tax or financial advice. For your own situation, speak to a conveyancing solicitor or another qualified professional.