The gap in first-time buyer advice
Most first-time buyer guides cover mortgages, solicitors, stamp duty, and the legal process. What they rarely cover is how to assess whether the property you're about to offer on is worth the price - or whether it's hiding £20,000 of problems behind a fresh coat of paint.
Around 1 in 4 agreed UK property sales fall through every year. For first-time buyers, the average failed purchase costs £3,337 in wasted fees. And for those who do complete, new homeowners typically spend £5,000–£15,000 on immediate repairs they didn't expect.
The reason is simple: first-time buyers don't know what they don't know. No one does, the first time. This guide gives you a framework for what to look for - so you make better decisions before you commit.
Before you start viewing properties
The most important thing you can do before viewing any property is understand what type of property you're looking at and what its common issues are. Different property ages have different known risk profiles:
- Victorian and Edwardian (pre-1920) - solid brick construction, but watch for: damp (rising and penetrating), single-skin walls in extensions, old electrics and plumbing, roof structure age, chimney condition
- Interwar (1920s–1940s) - cavity wall construction begins; watch for: cavity wall insulation issues, substandard concrete frames in some 1930s builds, older heating systems
- Post-war (1945–1980) - varied quality; some non-standard construction types (Airey, BISF, Wimpey No-Fines) which can affect mortgageability; watch for: flat roofs, single-glazed windows, outdated electrics
- Modern (1980–2010) - generally standard construction but watch for: early uPVC window failure, cavity wall insulation problems in some areas, builder-grade build quality
- New build (post-2010) - most warranties cover structural defects for 10 years (NHBC Buildmark); watch for: snagging issues, estate maintenance charges, leasehold terms
What to look for at a viewing
You will have 15–30 minutes in a property. Here is what to prioritise.
The most important things to check
- Damp - the smell is often the first clue. Musty or mouldy odour in any room, particularly ground floor, basement, or north-facing rooms. Look for staining at low level on external walls (rising damp), staining below windows or at ceiling level (penetrating damp), and black mould in corners (condensation damp). Any recently replastered patches on lower walls are a red flag.
- The boiler - ask the age. A boiler over 12–15 years old is approaching end of life. Replacement costs £2,000–£4,000. Ask for the last Gas Safe service record.
- The consumer unit (fuse box) - older rewirable fuses (you'll see the ceramic fuses) indicate electrics that need upgrading. Modern MCBs (circuit breakers) in a labelled metal or plastic board are current standard. A full rewire on a 3-bed house costs £4,000–£9,000.
- The roof - view from the street or garden. Missing or slipped tiles, sagging ridgeline, or damaged chimney stack are visible problems. A new roof on a 3-bed semi costs £5,000–£14,000.
- Extensions - do they look professionally built? Ask whether building regulations completion certificates exist. Unpermitted extensions can complicate your mortgage and sale in future.
Things first-time buyers commonly miss
- Checking under the kitchen sink for signs of historic leaks
- Looking at the ceiling directly below a bathroom (staining = historic leak)
- Asking whether there's an EICR (electrical safety certificate)
- Accessing the loft - always ask if you can, and always look if you can
- Checking the gutter condition - blocked or overflowing gutters cause damp over time
- Looking at wall cracks carefully - most are harmless settlement, but diagonal staircase cracking near openings can indicate subsidence
Making an offer
Once you've viewed a property and decided you want to proceed, your offer should reflect:
- Comparable sales data - check Land Registry sold prices for similar properties in the same street or road in the last 6–12 months
- Current market conditions - is it a buyer's or seller's market locally? How long has the property been listed?
- Visible condition issues - if you've spotted concerns at the viewing, factor a rough repair estimate into your offer
- Your leverage - a chain-free buyer, or a buyer with a mortgage in principle already, has genuine leverage; use it
First offers are commonly 3–5% below asking price, though in competitive markets some properties achieve or exceed asking price. Your offer should be supported by reasoning - not just a number.
After your offer is accepted
An accepted offer is not a contract. Either party can withdraw at any point before exchange of contracts. This phase - between acceptance and exchange - is where most first-time buyers are caught out.
- Instruct a solicitor or conveyancer - they handle the legal side of the transfer. Get quotes from 2–3 firms; expect to pay £1,000–£2,000 in legal fees plus disbursements.
- Submit your full mortgage application - your lender will arrange a basic valuation. This is not a survey and does not assess condition.
- Commission a survey - for any property that is not brand new, commission at least a Level 2 HomeBuyer Report. For older properties or anything where you spotted concerns at the viewing, commission a Level 3 Building Survey.
- Review the survey findings - if the survey reveals issues you weren't aware of, you can renegotiate the price, ask the seller to carry out works, or in serious cases withdraw.
- Exchange contracts - at this point the sale becomes legally binding. You pay a deposit (usually 10%) and agree a completion date. After exchange, withdrawing means forfeiting the deposit.
- Complete - on completion day the remaining purchase funds are transferred, the keys are released, and the property is yours.
The most expensive first-time buyer mistakes
| Mistake | Typical cost | How to avoid it |
|---|---|---|
| Skipping a proper survey | £5,000–£25,000+ in missed repairs | Always commission a Level 2 or Level 3 survey |
| Not checking condition at the viewing | £3,337 average on failed purchases | Use a structured viewing checklist |
| Not negotiating after the survey | Paying full price for a below-condition property | Always use survey findings to renegotiate |
| Buying leasehold without checking terms | High service charges, costly lease extensions | Check lease length, ground rent, and service charges before offering |
| Underestimating buying costs | Stamp duty, legal fees, survey, removal - can be £5,000–£20,000+ on top of deposit | Budget total buying costs, not just the mortgage |
Frequently asked questions
How much deposit do I need as a first-time buyer?
The minimum deposit for most residential mortgages is 5% of the purchase price, though a 10% deposit significantly improves the interest rates available to you. First-time buyers in England may be eligible for schemes including Shared Ownership, depending on their circumstances.
What is a mortgage in principle and do I need one?
A mortgage in principle (also called an agreement in principle) is a conditional statement from a lender that they would, in principle, lend you a certain amount. You don't legally need one to make an offer, but many estate agents will ask for one before accepting an offer, and having one makes you a more credible buyer.
How long does buying a house take?
The average UK property purchase takes 3–6 months from offer accepted to completion. Chains, survey issues, and solicitor delays are the most common causes of extended timelines.
What happens if my survey finds problems?
You can use the survey findings to renegotiate the price, ask the seller to carry out repairs before exchange, or withdraw from the purchase. See our full guide: How to negotiate house price after a survey.
Do I need a solicitor or can I do conveyancing myself?
While DIY conveyancing is technically legal in England and Wales, it is not recommended - especially for first-time buyers. The legal complexity, lender requirements, and risk of missing something significant make professional conveyancing worth the cost.
About the author
Jag Singh is a Senior Quantity Surveyor with 18 years of experience across residential and commercial property. He founded KeyWise to help UK buyers use price, condition, repair-cost and local market data to make better decisions, negotiate with confidence, and secure the right property at the right price.