Why This Stage Matters

Exchange of contracts is when a home purchase becomes legally binding. Pull out afterwards and you lose your deposit. Most costly problems — damp, missing certificates, expired mortgage offers — appear before exchange.

A clear pre-exchange checklist keeps you in control, saves weeks of delay, and helps you avoid buying the wrong property.

1. During Viewings – Start Your Due Diligence Early

Spotting issues yourself before instructing surveyors saves time and money. You’ll still commission a RICS Home Survey, but recognising warning signs means you don’t waste £1,000+ investigating a property outside your risk appetite. Think of it as part of the game: can you see what other buyers miss?

1. Filter fast - avoid wasting time on properties beyond your tolerance or budget for repairs.

2. Negotiate smarter - spot leverage points early.

3. Stay realistic - old houses all have issues; the goal is to decide what’s acceptable for you.

Key Things to Look For

• External: cracked render, sagging roofline, blocked gutters (might not be easy to spot), damp staining, leaning chimney (difficult to spot).

Example of a Sagging roofline

Example of damp satining of external wall (Source)

Leaning chimney stack

• Internal: musty smell, cold corners, uneven floors, damp staining, condensation on windows.

Condensation on window

• Services: run taps, flush toilets, turn on heating (if you can). Slow drains or weak pressure might point to hidden plumbing issues.

• Neighbouring risks: overgrown trees, shared walls, unapproved extensions.

Ask the Seller

• When was the roof, boiler or electrics last repaired?

• Are there warranties for double-glazed windows?

• Any historic planning or neighbour disputes?

• When was the house last renovated? 

👉 Related: Go / No-Go Framework for Period Property Buyers

2. When to Commission a Survey

Book your HomeBuyer or Building Survey as soon as your offer is accepted and solicitors are instructed. Delaying until mortgage or search results arrive wastes weeks.

** Excluding VAT. Actual cost depends on provider, size of property, location and property type.

Survey results help you price in defects, plan follow-up reports (damp, roof, structure) and decide whether to proceed before paying your 10 % deposit.

👉 Related: Your Building Survey Found Damp — Now What?

3. Documents to Check Before Exchange of Contracts

Your solicitor will collect the legal pack, but you should understand what’s in it.

👉 Reference: Documents You Need to Complete a House Purchase

4. Review Survey & Search Findings

If your survey flags Category 3 issues:

• Get written specialist quotes within seven days.

• Use costs to renegotiate price or request contribution.

• Major structural work? Consider pausing purchase.

If searches show risk:

• Flood or contamination: obtain an insurance quote first.

• Planning notices: confirm no restrictions on future works.

5. Legal and Financial Steps Before You Exchange

Ask your solicitor to confirm all items below are complete and satisfactory:

• All searches and enquiries answered in writing.

• Certificates and guarantees supplied or indemnity agreed.

• Mortgage offer valid and lender conditions met.

• Deposit funds verified (usually 10%).

• Completion statement reviewed and approved.

• Buildings insurance arranged from exchange date.

• TR1 Transfer Deed checked and signed.

• Completion date agreed by both sides.

👉 Read next: Steps to Complete a House Purchase in England

6. Final Checks Before Exchange of Contracts

• Re-inspect the property if possible; confirm fixtures match the TA10 list.

• Verify meter readings and key hand-over plan.

• Confirm your solicitor has prepared your Stamp Duty (SDLT1) form.

• Keep digital copies of every document — you’ll need them for resale or insurance.

7. Common Mistakes That Delay Exchange

FAQ: Before Exchange of Contracts

Do I need insurance before exchange?

• Yes. Once you exchange, you’re legally responsible for the property even before completion. Lenders require proof of cover. The reason is (in an extreme case) even if the house collapses after exchange but before completion, the buyer is still legally obliged to complete the purchase and pay the full price,

Can I pull out before exchange?

• Yes. Until exchange, neither party is legally bound. You may lose survey or legal fees, but not your deposit.

When should I book a homebuyer survey?

• Immediately after your offer is accepted — early booking shortens the overall timeline by several weeks.

External Resources

• RICS Home Surveys – Official Guide

• Law Society – Property Transaction Forms

• MoneyHelper – Buying a Home Checklist
  
  

Next Steps with Us

Avoid last-minute delays before exchange. Survey Remedy coordinates surveys, specialist quotes, and legal checks so your solicitor can exchange faster and with confidence.

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