What Is Party Wall Monitoring?
Party wall monitoring is the structural movement monitoring of a neighbouring building during construction — typically basement excavations, underpinning, or demolition near a shared wall. It is separate from (but often required in addition to) the standard Party Wall Award process.
Party Wall Process Costs
| Service | Cost (ex VAT) | | --- | --- | | Party Wall Notice preparation | £50–£150/notice | | Schedule of Condition | £300–£600/property | | Party Wall Award (agreed surveyor) | £600–£1,200 total | | Party Wall Award (two surveyors) | £2,000–£4,000 combined | | General surveying hourly rate | £120–£350/hr |
For straightforward projects: £700–£1,800. Complex basements: £5,000–£10,000+.
Specialist Monitoring Costs
When the Party Wall Award specifies monitoring:
| Item | Cost (ex VAT) | | --- | --- | | Installation + baseline visit | £500–£1,000 | | Monitoring visit + report | £200–£400/visit | | Crack monitoring (tell-tales) | £50–£150/location | | Pre-works condition survey | £500–£1,500/property |
A typical residential London basement needs 3–10+ visits over the project — total monitoring cost £1,100–£5,000+ VAT.
What Drives the Price Up
- Work type — basement and underpinning carry the highest fees
- Number of adjoining owners — each requires separate notices and monitoring
- Surveyor appointment — agreed (single) surveyor is cheaper than two
- Monitoring frequency — weekly visits cost more than monthly
- Number of monitoring targets — more points increase setup and visit time
London vs. Rest of UK
| Item | London | Rest of UK | | --- | --- | --- | | Party Wall Award (agreed surveyor) | £700–£1,500 | £400–£900 | | Schedule of Condition | £300–£600 | £200–£400 | | Monitoring setup | £700–£1,000+ | £500–£800 | | Monitoring visit + report | £250–£400 | £150–£250 |
London fees run 50–150% above UK averages due to higher overheads and market demand.
Frequently Asked Questions
Q: Who pays for party wall monitoring?
The building owner carrying out the works pays. Under the Party Wall Act, you pay both your own surveyor's fees and the adjoining owner's surveyor's fees. Monitoring costs sit with the developer as a provisional sum in the cost plan.
Q: Is VAT added to party wall fees?
Yes — all surveyor and monitoring fees are subject to 20% VAT. Check whether quotes are inclusive or exclusive.
Q: How many monitoring visits are needed?
Typically weekly during heavy works (excavation, underpinning) reducing to monthly during fit-out. Your structural engineer or party wall surveyor sets the frequency in the monitoring specification.