Services
Movement, crack, tilt and vibration monitoring for London basements, party wall works, demolition and commercial developments. Baselines at setup, reports within 24 hours of every visit, and same-day alerts if a trigger is breached.
Around half of our London monitoring is residential: basements, underpinning and extensions next to occupied homes, usually under a party wall award. The other half is commercial: demolition, new build and refurbishment schemes beside offices, shops and public buildings, where the structural engineer or main contractor needs a record of how neighbouring structures behave.
London sites are tight. Targets often go on party walls, neighbouring facades and boundary walls, with the instrument set up on a pavement or in a lightwell. We plan the control network so it stays outside the zone of influence and can still be reached when hoardings, scaffolds and skips move around the site.
Budgeting for a scheme? Our structural monitoring cost guide sets out setup, visit and sensor costs. If you are an adjoining owner, my neighbour is building a basement explains what to expect.
Dagenham, London
Setting out a conveyor extension on a Thames jetty, plus repeat stockpile volume surveys and remote monitoring with alerts on a live industrial site.
Piling setting out, Volume surveys, Remote monitoring and alerts
Trebovir Road, Kensington, London
A measured height survey to settle whether a residential block close to 18 metres falls under the Building Safety Act.
Building height surveys
Olympic Park, Stratford, London
Floor levels recorded across hundreds of flats so a contractor could check them against the specified flatness standard.
Level surveys
Movement monitoring of the stadium arch.
Movement monitoring in the tunnels of the former Post Office railway beneath central London.
Movement monitoring for building works in a Mayfair mews.
Total station movement monitoring in Westminster.
Or see everything we do: structural monitoring, all services.
★★★★★
We have used THS Concepts for multiple surveys from topographic to drone photogrametry, they are professional and prompt and deliver exactly what is requested. Highly recommended.
★★★★★
We was looking for a local company to survey our setting out on our new build project and came across THS, We are VERY happy with the service they provided, Tom visited the site and was very helpful and professional. providing a detailed description and was very thorough. we will defiantly be using THS in the near future.
★★★★★
I contacted Tom to carry out a Topographic survey, and cannot recommend them enough. Nothing was to much, and I was kept up to date with everything as it happened! Great company to deal with and reasonably priced.
Yes. We work in every London borough, inner and outer, from our base in Leigh-on-Sea. Central London is about 45 minutes by train, so routine visits are easy to keep to schedule.
Setup, including the baseline readings, is usually £600 to £1,200. Each monitoring visit, including the report, is usually £200 to £400, and automated sensors are about £30 per sensor per week. Prices exclude VAT. See our structural monitoring cost guide for worked examples.
Yes, with the owner's agreement. On party wall works, access for monitoring is usually covered in the party wall award, so agree it with the surveyors before works start.
We quote within one working day. Setup takes about six hours on site for most jobs, and the baseline readings are taken at the same time, so monitoring is in place before works begin.
Send a location, a rough brief and your deadline. We reply with a fixed quote within 24 hours.