Nearly two-thirds of UK homeowners under 35 say they regret something about their purchase, and the most common reason — cited by 29% of them — is underestimating the costs. I’ve been writing about the UK property market for long enough to see the same pattern repeat: first-time buyers save every penny for a deposit, only to discover that the price on the estate agent’s board is barely half the story. The fees, taxes, and unexpected bills that arrive between offer and moving day can easily add another £5,000 to £10,000 — and that’s before you’ve bought a single piece of furniture.
That gap between what you expect and what you actually pay is what this article is about. I’m not going to tell you not to buy — I think homeownership is still a solid long-term move for most people. But I do want you to walk into it with your eyes open. Here’s what you actually need to know.
What “hidden costs” actually means for a first-time buyer
When I say hidden costs, I don’t mean anything sneaky. I mean the fees that simply don’t appear on the property listing or the mortgage agreement in principle. They’re perfectly normal, perfectly legal, and perfectly capable of derailing your move if you haven’t planned for them.
The biggest single hidden cost is almost always stamp duty. For a first-time buyer purchasing a £350,000 home, the bill is £2,500 — 5% on the £50,000 above the £300,000 threshold. That’s not a small number, and it’s due on completion day, not weeks later. My advice: calculate your stamp duty before you make an offer, not after. A closer look at what you’re actually paying for per square foot can help you decide whether that extra £50,000 is worth it.
Why most first-time buyers underestimate the total bill
The HomeOwners Survey 2025 found that 37% of all UK homeowners regret aspects of their purchase, and that figure jumps to 63% among 18–34-year-olds. The top regret? Underestimating costs. I see this happen because the deposit is so front-of-mind that everything else feels like an afterthought. But the deposit is just the beginning.
Take a typical £225,000 first home outside London with a 10% deposit. You’d need £22,500 for the deposit itself, but the additional costs — solicitor fees, survey, mortgage fees, searches, removals, and initial furniture — can easily run another £4,500 to £6,500. That’s the equivalent of several months’ rent you hadn’t budgeted for.
There’s also a regional split worth noting. In London, where average first-home prices push toward £475,000, stamp duty alone can hit £8,750 even with first-time buyer relief. Outside London, the same relief often wipes out the stamp duty entirely. If you’re buying in a high-value area, understanding how property costs and strategies differ by region can save you from a nasty surprise.
Where first-time buyers go wrong with their budget
I’ve watched friends, readers, and even colleagues make the same mistakes. They’re not careless — they just don’t know what they don’t know. Here are the four most common ones, backed by the numbers.
Forgetting that mortgage fees aren’t optional
Mortgage arrangement fees range from £0 to £1,500, and valuation fees add another £0 to £400. Many buyers choose a fee-free deal to avoid the upfront cost, but those deals often come with a higher interest rate. Over a five-year fix, paying a £999 fee for a lower rate can actually save you money. The trick is to compare the total cost over the initial term, not just the monthly payment. A broader look at how government policy shapes mortgage affordability can help you understand why rates vary so much between lenders.
Skipping the right survey to save a few hundred pounds
A basic mortgage valuation — often free — tells the bank whether the property is worth the loan. It tells you almost nothing about the condition of the building. A Level 2 HomeBuyer survey costs £400–£700 and can flag issues like damp, subsidence, or outdated wiring. For older homes, a Level 3 building survey at £600–£1,200 is even more important. I’d never buy a property without at least a Level 2 survey. The £500 you save by skipping it could cost you £5,000 in repairs six months later.
Underestimating the first month’s cash drain
Once you’ve exchanged contracts, the bills arrive fast. Removals: £400–£1,200. Initial furniture if you’re upsizing from a flatshare: £1,000–£5,000. White goods if they’re not included: £600–£2,000. Council tax and utilities setup: roughly £250–£400 for the first month. A TV licence and broadband activation add another £35–£100. Add it up and you’re looking at £2,000–£7,000 in the first 30 days alone. A look at how tenant costs compare to homeowner costs might help you decide whether you’re truly ready to make the switch.
Ignoring the ongoing costs after move-in
Homeownership doesn’t stop costing you money after the first month. Buildings insurance runs £180–£350 per year. Maintenance and repairs typically eat 1% of the property’s value annually — that’s £2,250 on a £225,000 home. Leasehold properties add ground rent and service charges. And if you’re in a flat, there may be a sinking fund contribution. These aren’t one-offs; they’re recurring. Budget for them from day one.
→ Scroll right to see all columns
| Cost Category | Typical Range | When It’s Due |
|---|---|---|
| Mortgage arrangement fee | £0 – £1,500 | Before completion |
| Survey (Level 2 or 3) | £400 – £1,200 | Before exchange |
| Solicitor / conveyancer | £800 – £1,500 | At completion |
| Stamp duty (first-time buyer, £350k home) | £2,500 | On completion day |
| Removals | £400 – £1,200 | Moving day |
| Initial furniture & white goods | £1,600 – £7,000 | First month |
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How to budget for the real cost of your first home
You don’t need to memorise every fee. You need a system that catches the big ones and leaves room for the surprises. Here’s the approach I’d take if I were buying my first home tomorrow.
Build your cost checklist before you view a single property
Start with a spreadsheet or a notebook. List every fee from the table above — stamp duty, solicitor, survey, mortgage fees, removals, furniture, white goods, and a £2,000 contingency. Add them up. If the total makes you uncomfortable, adjust your maximum offer price downward. A good rule of thumb: your total cash needed (deposit plus all additional costs) should be no more than 25% of the property price. On a £250,000 home, that means £62,500 total — £25,000 deposit plus £37,500 for everything else. If you’re short, house hacking or other creative strategies might help you bridge the gap.
Use a Lifetime ISA to accelerate your savings
The Lifetime ISA gives you a 25% government bonus on savings up to £4,000 per year — that’s up to £1,000 free money annually. You must be 18–39 to open one, and the account must be held for at least 12 months before you use it for a home purchase. If you’re saving for a deposit, this is the single most effective tool available. Max it out every year if you can.
Get professional advice before you commit
A good solicitor or conveyancer will walk you through the full cost breakdown before you exchange contracts. They’ll also handle the searches, Land Registry registration, and fund transfer. Fees typically run £800–£1,500, and that includes disbursements like local authority searches (£300–£450) and Land Registry fees (£20–£270). If you’re unsure about any part of the process, speaking with a property lawyer online can give you clarity without the cost of a full in-person consultation.
Plan for the first six months of ownership
Set aside that £1,500–£2,500 contingency fund I mentioned earlier. It’s not for decoration — it’s for the boiler that fails in December, the shower that leaks through the ceiling, or the electrical certificate that reveals outdated wiring. A Wi-Fi water leak detector can catch one of the most common and costly early surprises before it becomes a major repair. Stick it under the sink, near the boiler, and behind the washing machine. It costs about £30 and could save you hundreds.
Frequently asked questions about hidden home-buying costs
Can I add mortgage fees to the loan instead of paying upfront? ▾
Do I really need a survey if the mortgage valuation is free? ▾
What happens if I can’t afford the stamp duty on completion day? ▾
Is it worth paying for a faster broadband activation? ▾
How much should I budget for redecorating a new home? ▾
Can I use a credit card to cover moving costs? ▾
The real cost of buying your first home isn’t the deposit — it’s everything else that arrives in the weeks before and after you get the keys. Plan for it, budget for it, and you’ll avoid the regret that nearly a third of young homeowners are already feeling. If this was useful, you might also want to read Brexit and the UK Property Market: A Long-Term Perspective.
Sources and Further Reading
Property Development Dilemmas: Balancing Growth with Community Needs in Britain — Explores how planning costs and community opposition can affect property values and development timelines.
Airbnb Apocalypse: What’s Next for Short-Term Rentals in the UK? — A look at how regulatory changes are reshaping the rental market and what that means for buyers considering a second property.
The Hidden Costs of Buying Your First Home in the UK. Your First House, 2025.
The Hidden Costs of Buying and Owning a Property. HomeOwners Alliance, 2025.
The Hidden Costs of Buying a Home in the UK That Buyers Often Forget. Wis Mortgages, 2025.
