A second home mortgage is not simply an extension of your existing one. Bigger deposit, higher rate, stricter affordability, and a stamp duty bill that catches most buyers out. Here is what it actually costs and what lenders will ask.
Updated August 2026
A second home mortgage is for a property you use yourself, not one you let out. Expect a deposit of 20% to 25% as a minimum, a rate around 0.5% to 1.5% above your main residence, and affordability assessed on your income alone across both mortgages. The bigger shock is usually stamp duty: a 5% surcharge on every band, which on a £300,000 purchase means £20,000 rather than £5,000.
A second home is any residential property you own but do not use as your main residence. You stay there occasionally: weekends, holidays, or seasonally. It is not your primary address, and critically, it is not let to anyone.
Second homes are for personal use only. Letting one out, even occasionally through Airbnb or a holiday let platform, breaches the mortgage terms. If a lender discovers it, they can demand full repayment immediately. Some lenders permit limited letting of four to eight weeks a year if declared and approved upfront, but never assume it. If you want rental income, you need a buy-to-let or holiday let mortgage instead.
Lenders treat these as fundamentally different products. Choosing the wrong one causes application problems at best and breaches your mortgage terms at worst.
| Second home | Buy-to-let | |
|---|---|---|
| Purpose | Personal use only | Rental income generation |
| Deposit | 20% to 25% typically | 25% to 40% typically |
| Rates | Residential rates, above your main residence | BTL rates, often higher again |
| Affordability based on | Your income alone | Projected rental income |
| Can you let it? | No, except limited pre-approved letting with some lenders | Yes, that is the purpose |
If your plan involves any rental income at all, our buy-to-let guide covers how those mortgages are assessed, and holiday let mortgages deal with short-term letting specifically.
In England and Northern Ireland you pay standard stamp duty plus a 5% surcharge on every band. The surcharge rose from 3% to 5% on 31 October 2024, and the standard nil-rate threshold reverted to £125,000 on 1 April 2025.
| Purchase price | As a main residence | As a second home | The surcharge adds |
|---|---|---|---|
| £200,000 | £1,500 | £11,500 | £10,000 |
| £250,000 | £2,500 | £15,000 | £12,500 |
| £300,000 | £5,000 | £20,000 | £15,000 |
| £400,000 | £10,000 | £30,000 | £20,000 |
| £500,000 | £15,000 | £40,000 | £25,000 |
| Portion of price | Standard rate | Second home rate |
|---|---|---|
| Up to £125,000 | 0% | 5% |
| £125,001 to £250,000 | 2% | 7% |
| £250,001 to £925,000 | 5% | 10% |
| £925,001 to £1.5m | 10% | 15% |
| Above £1.5m | 12% | 17% |
Stamp duty cannot be added to the mortgage. The full amount is payable within 14 days of completion and has to come from your own funds, on top of the deposit. On a £300,000 second home that is £20,000 of cash needed before you have furnished the place.
The surcharge does not apply if you are buying your first property, if the purchase is under £40,000, or where separated couples are each buying a new main residence. If you buy a new main home before selling your old one, you pay the surcharge upfront but can reclaim it from HMRC provided you sell the previous property within 36 months. Refunds typically take three to six months.
These figures apply to England and Northern Ireland. Scotland charges Additional Dwelling Supplement and Wales charges higher residential rates, both under separate rules with different percentages. Rates change, so confirm the current position on the HMRC residential property rates page before committing to a purchase. We advise on mortgages rather than tax, so speak to an accountant or tax adviser for anything specific to your circumstances.
Second home mortgages sit between main residence and buy-to-let on both measures.
| Loan to value | Deposit needed | Typical rate range |
|---|---|---|
| 85% LTV | 15% | 6.0% to 7.0%, few lenders offer this |
| 80% LTV | 20% | 5.5% to 6.3% |
| 75% LTV | 25% | 5.0% to 5.8% |
| 70% LTV or lower | 30% or more | Best available rates |
Rate ranges are indicative of the market at the time of writing and are not a quotation. Actual rates depend on your circumstances, the property and lender criteria at the time.
Lenders take this view because a second home is the property most people would give up first if money got tight. Remote locations can be harder to sell after repossession, and properties standing empty deteriorate faster, both of which affect security value.
Rates vary considerably between lenders on second home products, more than on standard residential deals, so comparing across the whole market rather than a single lender matters here. Our full range of mortgage guides covers how lenders differ on rates, criteria and fees more generally.
Lenders scrutinise deposit sources more carefully on second homes than main residences. Savings, an inheritance with evidence, a documented family gift, or the sale of an asset with a clear paper trail are all fine. Large cash deposits without clear provenance raise money laundering concerns and slow applications down considerably. Raising the deposit by remortgaging your main home is possible but adds a layer of affordability assessment. If this is your first time raising a mortgage deposit of any kind, our first-time buyer guide covers deposit sourcing in more general terms.
This is where most second home applications fail, not at the deposit stage. No rental income is assumed, so both mortgages have to be supported by your income alone.
The usual rule is that total housing costs across both properties should stay within 40% to 45% of gross income. That is stricter than main residence lending, where 45% to 50% is common. Income multiples are also tighter: the second borrowing is often capped around 3 to 4 times income rather than the 4.5 times you might get on a main residence.
Illustrative example only. At around £1,120 a month this supports borrowing in the region of £175,000 over 25 years, depending on the rate. Actual figures depend on your circumstances and lender criteria.
The point this example makes is the one people miss: it is the running costs, not the mortgage payment, that push applications over the limit. Council tax on a second home carries no single person discount and some councils charge a premium. Utilities have standing charges even when nobody is there. Insurance on an unoccupied property costs considerably more than standard cover.
The affordability calculation across two mortgages is the part worth checking before you start viewing. A short conversation gives you a realistic figure to work with.
Initial consultation free. A broker fee of £299 is payable if you choose to proceed following a formal mortgage offer.
A second home is not a second mortgage payment. It is a second set of everything.
| Cost | Typical annual figure | Why it is higher than you expect |
|---|---|---|
| Council tax | £2,000 to £3,000, or double with a premium | No single person discount, and many councils in tourist areas charge a premium. Wales permits up to 300%. |
| Insurance | £500 to £1,200 | Standard home insurance does not cover properties empty for 30 days or more. Unoccupied policies cost 50% to 100% more. |
| Utilities | £1,000 to £1,600 | Standing charges continue whether you are there or not, and heating usually has to be maintained for the insurance to stand. |
| Maintenance | £1,500 to £2,000 | Two properties, two sets of repairs. Problems in an empty house go unnoticed for longer. |
| Travel | £1,200 to £1,500 | Rarely budgeted for, but visiting a coastal or rural second home adds up over a year. |
On a £220,000 coastal cottage, those running costs come to roughly £7,000 a year before the mortgage. Over twenty years that is £140,000 on top of what you borrowed, which is the figure most buyers have never worked out.
Beyond affordability, second home applications carry conditions that main residence applications do not.
Adverse credit makes this harder rather than impossible. Specialist lenders will consider it, typically wanting 30% to 40% deposit and charging materially higher rates. Our bad credit mortgage guide covers how lenders assess credit issues by type and age.
Reviews reflect individual client experiences and do not guarantee outcomes.
Second home applications turn on affordability more than anything else. A short conversation tells you what is realistic before you start viewing. Call 01422 354011 or use the form below.
Initial consultation free. A broker fee of £299 is payable if you choose to proceed following a formal mortgage offer. We may also receive commission from lenders. Your home may be repossessed if you do not keep up repayments on your mortgage.
Check What You Could BorrowWoodhall Mortgages is authorised and regulated by the Financial Conduct Authority (FRN 762513). As a whole-of-market mortgage broker, we consider mortgages from across the market, subject to lender criteria and product availability. This page is provided for general information only and does not constitute regulated mortgage advice. We advise on mortgages and do not provide tax advice: stamp duty and council tax treatment depends on your circumstances and on current legislation, so confirm the position with HMRC or a qualified tax adviser. Figures shown are illustrative and not a quotation. A broker fee of £299 is payable if you choose to proceed following a formal mortgage offer.
Woodhall Mortgages, Croft Myl, West Parade, Halifax, West Yorkshire, HX1 2EQ. Phone: 01422 354011. Last reviewed: August 2026.
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