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Spatial Dimensions is a UK measured building survey and geospatial company, founded in 2012, providing monitoring surveys from permanent offices in London, Sevenoaks and Nottingham. Our surveyors design, install and run monitoring on any type of building or structure, anywhere in the UK.
A monitoring survey measures the same structure repeatedly over time. The first survey sets a baseline; every later round is compared against it, so genuine movement shows up as a measured trend rather than a worry.
In short: a monitoring survey from Spatial Dimensions tracks movement, wall tilt and deformation trends in a building or structure over time — from periodic re-survey visits through to 24/7 real-time monitoring during enabling or building works — and reports the results clearly, so your engineer can decide whether action is needed. Monitoring is priced per visit, from £850 per round.
or call 01732 458799
What is a monitoring survey?
A monitoring survey is a series of precise measurements of a building or structure, repeated at agreed intervals, to detect whether it is moving. Deformation — a gradual change in a structure’s shape, such as tilting or bowing — is often invisible until well advanced; repeated measurement picks it up early, while there is still time to act.
Monitoring surveys are typically instructed when a project team notices defects, or suspects movement caused by nearby ground works, piling or drilling. The results give engineers, consultants, architects and contractors the data to decide whether remedial action is needed, or to sign off the next stage of a project with confidence.
What does a monitoring survey detect?
Movement, wall tilt and deformation trends over time. In practice, a Spatial Dimensions monitoring survey is used to detect:
- Building and structural defects — with evidence of whether they are stable or worsening
- Structural movement and wall tilt — position and verticality measured between rounds
- Deformation trends — gradual changes of shape, tracked from round to round
The purpose is preventing accidents and building collapse, and the peace of mind that brings. Monitoring does not stop a structure moving — it tells you it is happening early enough to act.
How does a monitoring survey work?
Three steps: a stable reference framework, a baseline survey, then repeated measurement rounds.
First, the control network — the fixed reference points every measurement is taken from. Readings are only trustworthy if the points you measure from are not moving themselves, so Spatial Dimensions establishes closed-loop control networks — every position checked more than once — anchored to Ordnance Survey benchmarks. On construction projects we place permanent control off site on hard standing such as concrete or asphalt, away from the works, so the reference framework cannot drift while the site is disturbed.
Then the baseline. The first survey records the structure’s position and shape at a known date; every later round is measured from the same control and compared against it. The differences are the movement, and a series of rounds shows the trend: stable, slowing or accelerating.
What monitoring options are available?
Spatial Dimensions offers flexible monitoring solutions depending on the project and the budget. The two ends of the range:
- Periodic monitoring visits. Our surveyors return at agreed intervals, re-measure, and report the change since the last round — suited to structures where expected movement is slow and a regular check is enough.
- 24/7 real-time monitoring. Continuously reporting instruments record around the clock during enabling or building works, flagging movement, wall tilt or deformation trends as they develop — safety assurance during high-risk excavation next to retained facades or neighbouring buildings.
“Enabling works” means early site preparation — demolition, excavation and groundworks — before main construction begins. It is when retained and neighbouring structures are under the most stress, and when real-time monitoring matters most.
Spatial Dimensions will recommend the lightest option that answers the question — and if a one-off measured building survey would settle it, we will say so plainly rather than sell repeat visits you do not need.
Who commissions monitoring surveys?
Mostly the people responsible for keeping a site and its neighbours safe.
- Contractors during demolition, excavation and enabling works, especially next to retained structures or neighbouring properties. Main contractors and site teams make up around a quarter of the Spatial Dimensions client base — see our resources for contractors.
- Structural and civil engineers who need measured evidence of whether a structure is stable.
- Building safety teams tracking the condition of occupied buildings.
- Property consultants and project managers who want movement risk managed and documented — see our resources for consultants.
One published example: structural tracking for building safety at Kensington Court Gardens, for Lawson Martin Long Consulting Engineers.
What will I receive from a monitoring survey?
The results of a Spatial Dimensions monitoring survey are recorded in a detailed survey report containing:
Swipe the table sideways to see all the columns.
| Deliverable | What it is |
|---|---|
| Graphs and charts | Movement plotted round by round, so trends are visible at a glance |
| Heatmaps | Colour-coded views showing where change is concentrated |
| CAD drawings | Scaled drawings recording the monitored structure and reference positions |
| Photographs | A dated photographic record of the structure and any visible defects |
Every report passes multi-stage checking under our ISO 9001:2015 quality system — the person who prepares a job is never the person who signs it off.
How long does a monitoring survey take?
Getting started is quick: Spatial Dimensions mobilises to site in an average of 5.3 working days from instruction, anywhere in the UK.
How long monitoring then runs depends on the risk — usually the length of the works phase that created it, or long enough to establish a clear trend when investigating a defect. The period and frequency of rounds are agreed per project and reviewed as results come in.
How much does a monitoring survey cost?
Monitoring from Spatial Dimensions is priced per visit, from £850 per round.
The price of a monitoring survey depends on four things: how long it runs, how often readings are taken, whether rounds are visit-based or 24/7 real-time, and how easy the structure is to access.
Spatial Dimensions quotes fixed prices against a written specification, with duration, frequency and reporting agreed before work starts.
For a fixed price, tell us what needs monitoring, for how long and how often. We will come back with a written quote within 24 hours. All prices exclude VAT.
Comparing quotes? Our Survey Buyers Guide — free to download from our guides page — covers ten things that separate a good survey from a cheap one. Spatial Dimensions carries £10 million professional indemnity insurance, with zero claims to date.
or call 01732 458799
Frequently asked questions
A monitoring survey measures a building or structure repeatedly over time and compares each round against a baseline, so that movement, wall tilt or deformation shows up as a clear trend. Spatial Dimensions designs, installs and runs monitoring surveys UK-wide.
When a project team notices defects or suspects movement — commonly from nearby ground works, piling or drilling — or before demolition, excavation or enabling works next to structures that must be protected. If your engineer has specified monitoring, Spatial Dimensions works to their specification.
Monitoring that records 24 hours a day through continuously reporting instruments installed for the duration of enabling or building works. Trends in movement, wall tilt and deformation are flagged as they develop rather than at the next visit.
As long as the risk lasts. There is no standard duration: the monitoring period and frequency are agreed per project, usually matched to the works phase that created the risk, and reviewed as the results come in.
The trend is flagged and reported to your project team promptly. Who is told, how quickly and in what format is agreed when the monitoring is specified. Spatial Dimensions provides the measured evidence; decisions on remedial action sit with your engineer.
Yes. Contractors regularly commission Spatial Dimensions to monitor neighbouring or retained structures during demolition, excavation and enabling works. A baseline survey before works start gives all parties a factual record; monitoring then shows whether the works are having any effect.
Request a monitoring survey quote
Tell us what needs monitoring, what has prompted it, and for how long and how often you need readings; Spatial Dimensions will reply with a written, fixed-price quote within 24 hours.
Email: website@spatial-dimensions.co.uk
Phone: 01732 458799
Offices: London · Sevenoaks · Nottingham · working nationwide
Related services
- Setting out surveys — horizontal and vertical control transferred from design gridlines to site
- Construction verification — as-built laser scanning checked against design, with variance reporting
- Laser scanning surveys — millimetre-precision capture, including hazardous or hard-to-reach areas
- Measured building surveys — the full as-built dimensional record of a building
