THS Concepts Logo - White

Movement Monitoring Survey

Basements, Piling, Insurance ETC

Working across London & the UK, our monitoring surveys satisfy party wall awards and give clients peace of mind during construction and engineering projects.

Surveyed Using Leica Total Stations
Accurate, fast, non-invasive, and complete data capture.

Organised On Going Reports
Quickly analyse and observe movements (or lack of).

Experienced Team
Know that you are in the right hands for your measured survey.

Fully insured
We carry £500,000 professional indemnity insurance.

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In search of immediate pricing? Obtain an instant online estimate or secure a fixed cost for your project. Please use the buttons below.

5 gold stars in a row

“Having worked with THS for several years now, each project is treated with high professionalism every time. We would highly recommend their team.

James Furzer – JFD Architecture
Google Review

5 gold stars in a row

“We have used THS Concepts for multiple surveys from topographic to drone photogrammetry, they are professional and prompt and deliver exactly what is requested. Highly recommended.”

David Hopper – Marmus Engineering
Google Review

5 gold stars in a row

“Great service. Quick response to quote request, all my queries responded promptly. Good drawings delivered and were delivered before time agreed.”

Nuria Bargueno
Google Review

Building Movement Monitoring Surveys – Features

We provide detailed structural movement monitoring surveys and clear, easy-to-understand reports to give you peace of mind during your building project. Our service is often used for projects involving underpinning, basement excavation, and party wall works, and the reports help you meet key requirements and agreements with neighbouring property owners.

THS Concepts has been conducting movement monitoring surveys for over 8 years in and around London, working on projects ranging from small basement builds to multi-million pound refurbishments. Our team is efficient, setting up the monitoring scheme quickly and providing reliable reports on the movement of your structures.

Our Service - Before Construction

Monitoring survey at Wembley stadium in London
Report - Proposal

If you haven't already got any details from your Structural Engineer, then we can produce a free outline monitoring specification document for approval by your contractors.

Monitoring Scheme Setup

Our experienced surveyors visit your site and undertake ongoing surveys to determine movement (or lack of) over time. We set up the survey points and can advise on optimal positions to place the points whilst on site.

Report - Post Setup

Following the initial setup, we issue you with a thorough report describing important details of the setup, this includes point locations, setting up positions and any other considerations.

Our Service - During Construction

On-Going Surveys

Following the initial setup, we issue you with a thorough report describing important details of the setup, this includes point locations, setting up positions and any other considerations.

Monitoring Reports

Following your survey, you will receive ongoing reports and graphs clearly illustrating the results of the survey. You will be able to compare movement over time and be automatically informed if the movement is beyond its limit.

Automated Emails

Our emails alert you to any movement that has exceeded it's pre-set yellow and red limits.

Building Movement Monitoring Surveys​ - Process

Quotation / Proposal

On Going Visits

Setting Up Scheme

After Care

Frequently Asked Questions

A fixed position monitoring survey is the method of monitoring a set location on a building / wall / structure and observing movement in the horizontal and vertical planes over time. 

Fixed position monitoring is used for a number of projects ranging from small basement projects to large infrastructure projects such Crossrail tunnel project under London.

The monitoring project always starts with the initial setup of the monitoring targets and local survey control network. The targets are fixed to the structure in the pre-designated locations utilising either glue or drilled screws.

Without a fixed monitoring point to resurvey each time, the consistency will be poor or non-existent. Fixed points are installed on to the structure and usually consist of survey prisms or reflective target stickers. When using prisms, they are typically secured using screws drilled into walls or using high strength glue.

A local survey control network also needs to be installed. This involves placing survey targets (prisms or reflective survey points) away from the site. These are used by the total station as a way of calculating its precise position each time a monitoring survey needs to be undertaken.

A monitoring survey is undertaken using a piece of equipment called a total station. A total station is a high accuracy optical instrument that is used to measure distances and angles. Total stations are usually mounted on tripod legs, whereby the operator can look through the lens and record survey points. In some cases, automation is required If so a total station can be left in a safe location and operated remotely.

At each survey interval, the total station has to be set up using the local control network. Once set up accurately, the monitoring survey process can be undertaken. Each monitoring point is precisely surveyed using the total station and recorded to the instrument.

Once this data has been reached the office, it is uploaded to the monitoring survey software, which can generate data to illustrate movement (or lack of) over time.

Monitoring a building during construction is important for several reasons:

  • Quality control: Monitoring allows you to ensure that the construction is being done according to the plans and specifications, and that the materials being used are of the required quality.

  • Safety: Monitoring can help identify and address potential safety hazards during the construction process, such as unstable scaffolding or unsafe work practices.

  • Budget and schedule: Monitoring the construction process can help you stay on track with the project budget and schedule, allowing you to identify and address any potential delays or cost overruns.

  • Compliance: Monitoring the construction process can help ensure that the project complies with all relevant building codes, regulations, and standards.

Overall, monitoring a building during construction is essential for ensuring that the project is completed successfully and to the required quality standards.

A monitoring survey process is usually undertaken on the advice of a professional, such as a Structural Engineer or Party Wall Surveyor. If a building or structure is a risk of movement, then a monitoring survey is usually commissioned.

Typically, monitoring surveys are commissioned when undertaking heavy construction works next to existing buildings. Some examples include:

  • Piling works
  • Underpinning
  • Basement excavation
  • Demolition

A monitoring survey scheme can also be commissioned where an insurance claim is being checked.

It is very important that you have at least one survey prior to any works being undertaken. This is to ensure you have a base reading to compare any future readings against. If you start after works have taken place, then you may miss any initial movement in your structure.

During major operations such as digging, underpinning, concrete pours etc then we recommend a survey every week until this is completed.

Once the intense, heavy works have been completed then this can be reduced to say a monthly visit until the internal fit out works begin. Once the internal fit out (plastering / painting / decorating) has begun, then any movement will likely be limited, so the monitoring can cease.

We recommend speaking to your project manager or party wall surveyor about monitoring intervals. Some projects require more frequent intervals, whilst some specify less!

Monitoring survey data is usually presented in report and graph format. The reports will outline movement over time. It’s common to see reports showing movement compared to the previous set of readings, as well as the initial set of readings.

Graphs can also be produced to show the movement in a graphical sense. Graphs can help show when movement started occurring.

Movement monitoring surveys are a good way to help prove or disprove that movement within a structure has been undertaken. This can help with future claims, either made for or against.

Diligent contractors ensure that they minimise movement as a result of construction, however claims from neighbours can still arise.

The movement monitoring reports produced can demonstrate movement or lack of overtime. This can be used in counter-claim situations whereby neighbours insist that damage has occurred.

Another purpose of monitoring surveys is from a safety perspective. If a building is moving during construction works, then this can be identified. If a movement exceeds a certain level, then this can be flagged. The potential source of the movement can be found and mitigated against prior to any problems that could potentially endanger.

The cost of setting up and monitoring a building for movement all depends on the requirements and complexities of the project. For a typical basement build in London, we charge approximately £750 + VAT to set up and £250 + VAT as an ongoing visit fee.

If you are looking for an instant estimate, we have a free online calculator here:

Monitoring Survey Estimate Tool.

Saving money when possible whilst undertaking a project is important. Below, we explain how this can be done when commissioning a monitoring survey company.

Reduce the amount of targets/locations

When your Structural Engineer or Party Wall Survey is looking to commission a survey, they usually don’t consider the company who has to undertake the works. Complicated monitoring survey proposals that require multiple total station setup locations add a lot of complexity and time to a job.

Keeping things simple

Simplifying what is required can often make little difference to the effectiveness of a monitoring survey, and can unlock considerable savings if the following elements are considered:

  • Can the survey company easily set up with access to their off-site control network?
  • Can we reduce the number of monitoring points?
  • Are the monitoring points safe and easy to install?

Increase the monitoring interval

Often a surveying company will quote for a monitoring survey job based on a per-visit basis. A simple way of reducing the overall cost of a monitoring survey is to simply reduce the amount of surveys.

  • Can a weekly specification be pushed to a 2 weekly interval?
  • Can we do fewer surveys whilst less intense work is being undertaken on site?
  • Is it possible to pause the survey work whilst the site is temporarily shut down?

Check their experience

The experience of your monitoring survey team has the possibility of significantly increasing your costs. An incompetent survey company can incorrectly report results and show general inconsistencies. It is important you check the following aspects of a survey company prior to appointment.

  • Experience in undertaking monitoring surveys
  • Level of insurance for the works.
  • What is and isn’t included in their price.
  • Reviews from others (Google, Trustpilot ETC).

Basement construction has a long history in London and has been a popular way to add additional space to properties in the city for many years. In the 19th century, it was common for basements to be used for storage and as service areas for the home, such as the kitchen and laundry. As the city’s population grew and land became more expensive, basements were increasingly used for living space, and it became common for properties to have basements that were fully finished and used as additional bedrooms or living areas.

In recent years, the demand for additional space in London has continued to increase, and basement construction has become even more popular as a way to add value to a property. However, the process of building a basement can be complex and can involve significant excavation and construction work, which can cause disruption to neighbours and the surrounding area. Despite this, many people in London choose to undertake basement construction projects due to the benefits they can bring in terms of additional space and increased property value.

We provide you with accurate data and easy to understand survey reports. We have been engaged on a number of projects ranging from small basements to large earth moving projects.

Our clients receive great service from us, which is reflected in our 5-star reviews on Google and Trustpilot. We ensure you are happy before, during and well after the project has ended.

As a professional surveying company, we carry all the relevant insurance to give our clients confidence in what we produce. We offer a money-back guarantee on all our work and have £5 million in both professional and public liability insurance.

We undertake monitoring surveys in the counties surrounding our offices. These include:

  • London
  • Essex
  • Kent
  • Hertfordshire
  • Sussex
  • Surrey
  • Buckinghamshire

However, we have been much further afield within the UK and internationally. We have undertaken surveying work as far away as Liberia in West Africa.

If you would like a quote for a project, then please get in touch.

Other Services

Crack Monitoring

We help our clients monitor cracks that are potentially opening or closing. We install demec studs or gauges to accurately record movement over time.

Tilt Monitoring

We install tilt sensors on walls that need to be monitored for angular movement. Our tilt sensors work remotely and can report readings as often as every minute!

Need a Quote For Your Project?

In search of immediate pricing? Obtain an instant online estimate or secure a fixed cost for your project. Please use the buttons below.

Don’t fancy filling out the form? Get in touch via email or telephone:



020 8935 5160

Perhaps you need a quick, instant, online estimate? We can help. Visit our Measured Survey Instant Estimate page.

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