What Can Go Wrong When Buying a House?

Financial Risks

Mortgage Application Problems

Even if you’ve obtained an Agreement in Principle (AIP), your full mortgage application can still be declined. Reasons may include:

1. Credit issues: Missed payments or an undisclosed loan can stop approval.
2. Employment changes: Switching jobs mid-process may signal instability.
3. Discrepancies in documentation: Providing inconsistent or incorrect financial data can lead to rejection.

Down Valuation by the Lender

Lenders carry out their own valuation to assess a property's worth. If they value it lower than your offer, you may face:

1. A reduced mortgage offer
2. The need to renegotiate the purchase price
3. Scrambling to find additional deposit funds

Rising/Unstable Interest Rates

Mortgage interest rates can change between your initial application and the completion date. A sudden hike could:

1. Push your monthly repayments beyond your budget
2. Impact affordability calculations
3. Force you to pull out or reapply under different terms

Property Chain Issues

What Is a Property Chain?

A chain forms when multiple transactions are dependent on one another. For example, your seller must buy another property before they can move out. This creates a risky situation if you want to proceed but they cannot.

Collapses in the Chain

You may lose money on surveys, searches and legal fees if the deal falls through.

Chains can break for numerous reasons:

1. A buyer drops out at the last minute
2. One party has trouble securing a mortgage
3. Delays in one transaction stall the entire chain

Long or Complex Chains

The longer the chain, the higher the chance of delay. Properties involved in probate, divorce or lease extensions often add confusion and time to the process.

Conveyancing and Legal Hurdles

Slow Conveyancers

Unresponsive or disorganised solicitors can delay everything. This is particularly problematic when:

1. Documents aren’t sent on time
2. Local authority searches take weeks
3. Communication between solicitors is poor

Title or Boundary Disputes

These issues may delay or even prevent completion.

Conveyancing may uncover that:

1. A neighbour disputes the property boundary
2. Part of the property is built on land not legally owned by the seller
3. Rights of way or easements exist that limit usage

Unregistered or Missing Deeds

For older homes, especially those not bought or sold in decades, the land may be unregistered making it harder to prove legal ownership. Missing title deeds can delay the sale significantly.

Survey and Structural Concerns

Poor Survey Results

Some of these may be costly or render the property unmortgageable.

A home survey might reveal:

1. Damp, mould or woodworm
2. Structural movement or subsidence
3. Roof damage or poor insulation

Impact on Valuation and Negotiations

If serious issues are found:

1. Buyers may renegotiate the price
2. Lenders may withdraw or reduce the mortgage offer
3. Sellers may refuse to lower the price causing the deal to fall apart

Invasive Plants or Hazards

Surveys sometimes detect invasive species like Japanese Knotweed or dangerous materials such as asbestos which carry both legal and removal complications.

Gazumping and Gazundering

What Is Gazumping?

Gazumping happens when a seller accepts your offer and later agrees to a higher offer from someone else often just before the exchange of contracts. Since offers aren’t legally binding until exchange in England and Wales, this practice although unethical is legal.

How to Avoid Gazumping

1. Ask for the property to be taken off the market once your offer is accepted
2. Move quickly with your mortgage and solicitor
3. Consider a “lockout agreement” (seller agrees not to deal with others) - it is not always enforceable but it shows intent

Gazundering Risks

Gazundering occurs when a buyer lowers their offer just before exchange often to take advantage of the seller’s desperation to move. This tactic can force sellers to accept less than agreed or lose the sale entirely. Some sellers refuse and the sale collapses.

Misleading or False Property Information

Dishonest Listings

Always verify details through independent checks and surveys. Estate agents or sellers may exaggerate:

1. The condition of the home
2. The size or boundaries of the property
3. Proximity to schools or transport links

Non-Disclosure of Problems

Legally, sellers must complete a Property Information Form (TA6) truthfully. If discovered post-purchase, you may need to pursue legal action for misrepresentation. But some may fail to disclose:

1. Neighbour disputes
2. History of flooding or subsidence
3. Past building works without approval

Legal and Planning Complications

Lack of Planning Permission

Extensions, loft conversions or conservatories may have been built without proper planning permission or building regulations. This can result in:

1. Costly remedial work
2. Legal battles with local councils
3. Problems reselling the property in future
4. Mortgage refusals

Restrictive Covenants

A covenant is a condition in the house deeds that may restrict use of or changes to a property. They can affect mortgage, insurance and some buyers will avoid a house with covenants. Some homes carry legal restrictions which might:

1. Ban certain renovations or extensions
2. Prohibit keeping animals
3. Forbid sub-letting or running a business

Unexpected Costs and Overstretching

Hidden Buying Costs

Many buyers forget to budget accurately for:

1. Stamp Duty Land Tax (SDLT)
2. Solicitor and conveyancing fees
3. Survey fees
4. Removals and storage
5. Initial maintenance or furniture costs

Financial Overcommitment

Getting caught up in bidding wars or emotional attachment can lead you to:

1. Offer more than you can afford
2. Ignore potential defects or issues
3. Stretch your mortgage too far, increasing long-term risk

Delays and Moving Day Disasters

Delays in Exchange or Completion

This can be frustrating especially if you’ve already handed in notice on your rental or sold your house.

1. Common reasons for delay include:
2. Final checks not completed
3. Funds not transferred in time
4. Sellers not ready to move out

Issues on Moving Day

Even on completion day things can go wrong. These issues though resolvable add stress and cost.

1. Sellers may not vacate on time
2. The property may be left in a poor condition
3. Keys may be withheld or not handed over promptly

Emotional and Practical Regrets

Location Disappointment

You might realise too late that the area is:

1. Noisy or poorly connected
2. Lacking in amenities
3. Unsafe or declining in value

Lifestyle Mismatch

A house that seemed ideal on paper might not fit your actual needs. It’s important to view multiple properties, consider your future needs and not just immediate wishes. For example, typical problems are

1. Lack of storage
2. Not enough garden space
3. Long-term maintenance needs

How to Protect Yourself from problems when buying a house

While some issues are unavoidable, many can be mitigated with planning:

1. CLICK to Download the House Buyers Wants & Needs Checklist - describe your house and what you want
2. When buying a house what questions should you ask? - see 50 Questions to Ask when Buying / Viewing a House Checklist 2026
3. CLICK to Download the House Buyers Viewing Checklist - Carry out your own survey
4. Hire reputable professionals: Solicitors, mortgage brokers, and surveyors should have solid credentials and good communication.
5. Do thorough due diligence: Research the property, neighbourhood, local services and transport.
6. Insure yourself: Home buyer protection insurance can cover you if the purchase falls through.
7. Stay emotionally grounded: Don’t let excitement override caution.

And Finally...

Buying a house is an exciting milestone, but it’s not without risks. From financial pitfalls and legal tangles to last-minute surprises, there’s a lot that can go wrong. Being informed and proactive is the best way to protect your investment - and your peace of mind.

If you're well-prepared and supported by reliable professionals, you'll be in a much stronger position to avoid common traps and make your move a successful one.