11 common home buying mistakes and how to avoid them

Buying a home: where things commonly go wrong

Buying a property is exciting, but it’s also a process with lots of moving parts—finances, paperwork, valuations, surveys, and timing. Even small missteps can lead to delays, extra costs, or a deal that becomes harder to complete.

Below are 11 common mistakes made by first-time buyers and home movers, along with practical ways to reduce the risk of them happening.

1) Using up all your savings for a deposit

A bigger deposit can help you access more mortgage options, but leaving yourself with little or no cash buffer can be risky. Home buying costs don’t stop at the deposit.

What to watch for

• Solicitor and conveyancing costs
• Estate agent fees (where applicable)
• Stamp Duty and other purchase-related costs
• Moving costs
• Immediate repairs, furnishing, and day-to-day expenses after completion

How to avoid it

• Build a realistic “total cash needed” figure, not just a deposit number.
• Keep an emergency buffer so you’re not forced into new borrowing soon after completion.

2) Waiting until you’ve got a 20% deposit

It’s a common belief that you need a 20% deposit to buy. In practice, some buyers may be able to access mortgages with higher loan-to-value options, depending on their circumstances.

How to avoid it

• Treat deposit targets as flexible: explore what different deposit levels could mean for your mortgage options.
• Consider a mortgage decision in principle (where relevant) to sense-check borrowing capacity.

3) Overestimating your budget

A mortgage decision in principle can be useful, but it’s not the same as a final offer. Your affordability can be reassessed, and your overall spending needs may be higher than you expect.

How to avoid it

• Consider your full monthly outgoings (including bills, travel, childcare, and any existing commitments).
• Don’t assume the maximum borrowing amount is the right borrowing amount.
• Be cautious about stretching to win a property—valuation and affordability checks can still create problems.

4) Not looking beyond the look

It’s easy to fall in love with the décor, but you’ll live with the property’s layout, condition, and suitability for your day-to-day life.

What to check during the search

• Practical layout: storage, room sizes, and how you’ll use the space
• Heating and insulation: comfort and running costs
• Local factors: commuting, amenities, and the area’s overall feel
• Future plans: could you extend, adapt, or outgrow the home?

How to avoid it

• Make a short list of “must-haves” that go beyond appearance.
• If you’re buying for the long term, prioritise flexibility and livability.

5) Settling for the wrong property

Sometimes buyers compromise because they’re under pressure—timing, competition, or a chain situation. But buying the wrong property can become expensive if you need to move again sooner than planned.

How to avoid it

• If you feel rushed, pause and re-check your reasons for buying.
• Compare the property against your long-term goals, not just your immediate needs.
• Remember that selling and moving again can add significant costs.

6) Choosing a property a lender won’t like

Not all properties are equally straightforward for lenders. Even if a home is attractive to you, it may be more difficult for a lender to accept depending on its type and condition.

Examples of property factors that can complicate lending

• Mixed-use properties (for example, above shops or commercial premises)
• Non-standard construction
• Certain flat types (including some lease-length scenarios)
• Properties with severe structural issues or that are uninhabitable
• Homes affected by major planned works nearby
• Ex-local authority housing (in some cases)
• New-build properties with specific considerations
• Very small properties where lenders may have minimum size expectations

How to avoid it

• Check property suitability early in the process.
• If the property is unusual, get mortgage guidance before you commit to a purchase.

7) Rushing your property viewings

A viewing is your chance to spot issues and ask questions—before you commit to a purchase.

What to look for (practical checks)

• Damp or mould indicators (including around ceilings and external walls)
• Signs of roof or gutter problems
• Plumbing and drainage (test taps, showers, and flushes)
• Window and door condition and locking
• Evidence of condensation that may indicate ventilation or insulation issues
• Electrical condition (at least a basic visual check)
• The age and condition of key systems such as central heating

How to avoid it

• Go beyond the “wow” factor and focus on condition and day-to-day usability.
• If something doesn’t feel right, ask more questions or plan further checks.

8) Forgoing a property survey

A lender’s valuation is not the same as a survey. Valuations are primarily about lending risk and basic value considerations; they may not uncover the wider range of defects a full survey can.

How to avoid it

• Budget for a survey that matches the property and your risk tolerance.
• Use the survey findings to negotiate repairs, price adjustments, or—if necessary—reconsider the purchase.

9) Denting your credit score during the process

Mortgage decisions can be sensitive to changes in your financial situation. Taking on new credit or making changes to your finances can affect affordability checks.

How to avoid it

• Keep your finances stable after you apply.
• Avoid taking out new loans or credit cards during the buying process.
• Check for errors on your credit file well before you apply, so you’re not dealing with surprises later.

10) Choosing a lender without comparing your options

It can be tempting to go with the first mortgage you find—especially if you’re trying to move quickly. But mortgages vary in structure, fees, and how they fit your circumstances.

Common areas to compare

• Mortgage type (for example, repayment vs interest-only)
• Fees (arrangement and product fees)
• How long to fix for and what happens after the fixed period
• Overall cost and suitability for your plans

How to avoid it

• Compare options based on your personal situation, not just the headline rate.
• Consider professional mortgage guidance to help you compare deals properly.

11) Moving out before moving in

If you’re part of a chain, or you’re currently renting, timing can become stressful. Some buyers move out too early and end up with limited flexibility if completion dates shift.

How to avoid it

• Plan for delays: exchanges and completions can move.
• If renting, consider whether you need an overlap period to reduce the risk of being caught without a place to live.
• Build a contingency plan so you’re not forced into rushed decisions.

Final thoughts: reduce risk by planning ahead

Most home buying mistakes aren’t caused by one big error—they come from small assumptions: underestimating costs, skipping checks, rushing decisions, or not considering how lenders and timelines work.

A more careful approach—budgeting properly, checking property suitability, protecting your credit position, and allowing time for surveys and process steps—can help keep your purchase on track.