2025 Survey Costs (ex VAT)
| Property | Standard | Fast Track (+25%) | Rush (+50%) | | --- | --- | --- | --- | | 2–3 bed | £400–£600 | £500–£750 | £600–£900 | | 4+ bed | £500–£800 | £625–£1,000 | £750–£1,200 | | Commercial | £800–£1,500 | £1,000–£1,875 | £1,200–£2,250 |
Survey Deliverables Reference
| Deliverable | Format | Use | | --- | --- | --- | | Floor plans | DWG + PDF | Design reference | | Elevations | DWG + PDF | Planning submission | | Sections | DWG + PDF | Building regulations | | Site plan | DWG + PDF | Planning boundary |
Monitoring Surveys for BIM Managers: Trigger Levels, Reporting and Risk Control
BIM managers coordinate the data environment for construction projects. Monitoring surveys generate large volumes of time-series data that need to be managed, visualised, and made available to the design and construction team. Integrating monitoring data into the BIM workflow requires understanding the data formats, update frequencies, and visualisation requirements.
This guide covers what BIM managers need to know about monitoring surveys: data formats, integration with BIM platforms, and risk control protocols.
Monitoring Data Formats
Monitoring surveys produce several data types that need to be managed in the BIM environment:
Time-series data — Regular readings from monitoring stations (levelling, crack monitors, groundwater). Time-series data is typically delivered as CSV or Excel files with timestamps, station IDs, and readings.
Point cloud data — Laser scan data from monitoring station installation or verification surveys. Point cloud data is delivered in RCP/RCS format.
Graphical data — Monitoring reports with trend graphs, location plans showing monitoring station positions, and threshold status indicators.
Alert data — Threshold alert notifications issued when trigger levels are approached or exceeded. Alert data needs to be routed to the correct recipient within the project team.
Integrating Monitoring Data into BIM
The integration of monitoring data with BIM models is an emerging area. Key considerations:
Data standard — IFC (Industry Foundation Classes) is the standard for BIM data exchange. Monitoring data can be embedded in IFC models as property sets associated with building elements.
Visualisation — Monitoring data can be visualised in BIM viewers by linking time-series data to spatial locations in the model. This allows the design team to see monitoring data in the context of the building geometry.
Sensor data management — For projects with automated monitoring systems, sensor data management platforms provide real-time data access, alert routing, and reporting. These platforms can be integrated with BIM collaboration environments.
Federated models — Monitoring data is typically managed in a separate discipline from the architectural, structural, and services models. The BIM manager is responsible for coordinating the monitoring data discipline within the federated model.
Trigger Levels and Alert Routing
BIM managers should ensure that monitoring alert routing is specified in the project data delivery plan:
Alert method — Email, phone, SMS, or platform notification. Alert distribution — Structural engineer, contractor, BIM manager, architect. Alert response protocol — What happens when an alert is received. Who reviews, who decides, who communicates.