Survey finding
Springy floors on your survey: how serious is it?
Bouncy floors are common in older houses. This page covers when they're cosmetic and when they're structural.
Last updated: 6 May 2026. Editorially reviewed: 20 May 2026.
Finding
Timber floor springiness
What this usually means
Springy floors typically indicate undersized joists, joist decay, or notched joists weakened by services installation. The deflection felt when walking is the clue; the cause is determined by lifting boards or inspecting from below.
Why it matters
Mostly comfort/Cat 2 if minor. Where decay or extensive notching is found, it can become a Cat 3 structural item.
Ask your surveyor
- Check:Have you identified the cause of the deflection?
- Check:Is there visible decay or notching from any access point?
Ask the seller
- Check:Has the floor had any work done, and when were the boards last lifted?
- Check:Are there any plumbing or electrical runs in the floor void?
Next steps
- •Get two written quotes from local trades before negotiating with the seller.
- •Speak to your mortgage broker before exchanging if the finding affects mortgageability.
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What you need to know
Severity
Significant. Specialist follow-up usually warranted before exchange.
Typical cost to fix
Investigation £200-£500. Strengthening (sister-joisting, additional supports) £1,500-£5,000 per affected room. Full joist replacement £5,000-£12,000+.
Mortgage impact
Standard unless decay confirmed.
Insurance impact
Standard.
When to pull out
Not on its own.
When to renegotiate, and by how much
Investigation plus likely strengthening cost; typical reduction £1,000-£4,000.
Thinking of pulling out or renegotiating? What to do after a bad survey
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Run a free previewHow MyPropertyScan produces this guide, and what it is not
Published by MyPropertyScan and written by Ziad Nasr, who is accountable for its accuracy. No page here is written or reviewed by a chartered surveyor, conveyancer or regulated adviser, and we do not claim otherwise.
This page is not:
- Chartered surveying — we do not inspect properties or produce RICS Home Survey reports
- Legal advice — we do not act as conveyancers or advise on title, tenure or contracts
- Mortgage or insurance advice — we are not regulated by the FCA and give no recommendations
Figures and process steps come from the published UK datasets and standards listed on this page, not from professional practice. Pages are updated when source coverage, survey cost assumptions, or lender and legal requirements materially change. Dataset limitations are set out on the methodology page.
Spotted something out of date or wrong? Email hello@mypropertyscan.com and we will correct it and change the update date.
Sources used
We use UK public and specialist sources where they are available. Public datasets can be incomplete, delayed, or missing for some addresses. Treat them as a starting point, not as a replacement for professional advice.
Source standard: preference goes to official government datasets, statutory bodies, professional standards, and primary dataset publishers. We cite the source family on the page and explain coverage limits rather than filling gaps with unsupported estimates.
- Professional standard: RICS Home Survey StandardRICS standard for condition-based residential surveys in the UK.
- Learn more from: RICS consumer guide to surveysConsumer-facing guide to survey types and when each level is appropriate.
- Official guidance: GOV.UK buying or selling your homeGovernment overview of the home buying and selling process.