Work planned from behind a desk doesn’t always reflect what teams will find when they reach site.
Access restrictions, changing surroundings and site-specific requirements can all influence how work needs to be approached, making it important to establish the facts before delivery gets underway.
This is where an effective site survey plays an important role, particularly for utilities and street works organisations working across different locations every day.
In this guide, we explain what a site survey is, why it matters and the key steps to consider when conducting one.
What Is a Site Survey?
A site survey is an assessment of a location used to gather information that can support the planning and delivery of proposed work.
It typically involves physically inspecting the location and recording relevant details about the work area. Depending on the job, this could include access, ground conditions, existing infrastructure, potential hazards, traffic and pedestrian considerations, and other site-specific requirements.
The scope of a site survey will vary depending on the type of work being undertaken. For utilities and street works, the survey should focus on collecting the information teams need to understand the location and determine what needs to be considered as the job moves towards delivery.
What Are Site Surveys Important?
Even similar jobs can require very different approaches depending on the location and conditions on site.
A site survey gives planning and delivery teams a clearer understanding of what to expect before work begins. This helps organisations allocate the right people and equipment, identify potential risks and make any necessary arrangements earlier in the planning process.
It also creates a reliable record of site conditions that can be shared between field and office teams, ensuring everyone involved in the job has access to the same information rather than relying on assumptions or outdated details.
When carried out effectively, site surveys can contribute to:
- Better-informed planning
- More appropriate resource allocation
- Earlier identification of potential issues
- Improved communication between teams
- Safer and more prepared delivery
- Fewer avoidable delays and disruptions
How To Conduct a Site Survey?
1. Understand the Scope of the Work
Before attending site, establish what work is being proposed and what the survey needs to determine. Reviewing the job beforehand gives the surveyor context and helps ensure the visit focuses on the information that will affect planning and delivery.
Before setting out, review:
- The proposed work and job requirements
- The exact location and work area
- Relevant specifications or instructions
- Information that needs to be confirmed on site
- Any known restrictions or concerns
2. Review Existing Plans and Information
A site visit shouldn’t be considered in isolation. Existing plans, drawings and records can provide important context and help the surveyor identify areas that need to be verified or investigated while on site.
This could include:
- Site or location plans
- Utility and service records
- Previous survey information
- Relevant drawings or specifications
- Existing photographs or site records
3. Assess Access to the Site
Consider how operatives, vehicles, plant, equipment and materials will reach the work area. Restrictions that appear minor during planning can create significant problems when teams arrive to deliver the job.
Check for:
- Vehicle and pedestrian access
- Parking or loading restrictions
- Gates or restricted entry points
- Space for plant and equipment
- Nearby properties or businesses
- Emergency access requirements
4. Assess the Work Area and Ground Conditions
Inspect the physical area where the work will take place and identify anything that could influence how the job is completed. The aim is to understand whether the conditions on the ground match what was expected during planning.
Consider:
- Surface type and condition
- Available working space
- Slopes or gradients
- Existing damage
- Physical obstructions
- Surrounding structures
5. Identify Potential Hazards
Potential hazards should be identified during the survey so they can be considered before operatives arrive to begin work. The hazards present will vary significantly depending on the location and activity being planned.
Look for potential risks involving:
- Moving vehicles
- Pedestrians and cyclists
- Underground or overhead services
- Uneven or damaged surfaces
- Nearby activities
- Restricted working areas
6. Identify Existing Infrastructure
Existing utilities are a particularly important consideration when surveying work that involves excavation or street works. Physical observations can provide useful information, but they shouldn’t be relied upon alone to establish the location of underground services.
Look for visible indications such as:
- Inspection and access covers
- Utility boxes and cabinets
- Marker posts
- Street lighting
- Previous reinstatements
- Overhead services
7. Assess Traffic, Pedestrians and the Surrounding Environment
For work taking place on or near roads and footways, the surrounding environment can significantly affect how the site needs to be managed. Recording these conditions early can help inform appropriate traffic and pedestrian arrangements.
Consider the presence of:
- Junctions and crossings
- Bus stops
- Cycle routes
- Parking and loading areas
- Schools, shops or businesses
- Busy pedestrian routes
- High levels of vehicle traffic
8. Consider Environmental and Ecological Factors
The surrounding environment should also be considered when surveying a proposed work area. Nearby habitats, watercourses, trees or signs of protected species, such as great crested newts, could affect how and when work can take place. Where potential ecological constraints are identified, specialist advice or further assessment may be required before the job progresses.
Look for potential considerations including:
- Trees and hedgerows
- Ponds, ditches and watercourses
- Protected or sensitive habitats
- Evidence of protected species
- Areas subject to environmental restrictions
- Potential pollution or environmental risks
9. Confirm Permits and Site-Specific Requirements
Some locations will have additional restrictions or requirements that affect when and how work can take place. Identifying these during the survey gives planning teams an opportunity to address them before the job reaches site.
This could include:
- Permit requirements or conditions
- Working-hour restrictions
- Traffic-sensitive locations
- Access restrictions
- Local authority requirements
- Other site-specific conditions
10. Confirm Land Ownership and Access Requirements
Not all proposed work will take place entirely within the public highway. Where a route crosses private or third-party land, teams should establish who owns or occupies the land and whether the necessary rights or permissions are in place before work progresses.
Permissions associated with street works do not necessarily provide rights to access private or third-party land, so additional landowner consent may be required, sometimes referred to as Permission to Dig (PTD) or Permission to Work (PTW).
This could include checking:
- Whether any part of the work crosses private or third-party land
- Land ownership and occupier information
- Access rights to the proposed work area
- Existing wayleaves or easements
- Whether additional landowner consent is required
- Any restrictions associated with accessing the land
11. Review Reinstatement Requirements
Where work involves opening a road, footway or other part of the highway, reinstatement requirements should be considered during the survey. Under Section 71 of the New Roads and Street Works Act 1991, reinstatements must meet prescribed standards, with detailed requirements set out in the Specification for the Reinstatement of Openings in Highways (SROH).
Identifying the likely extent of reinstatement early can highlight additional costs and help teams consider alternative approaches where appropriate.
Consider:
- The type and condition of the existing surface
- The proposed excavation location and dimensions
- Proximity to existing reinstatements and fixed features
- The likely extent of the required reinstatement
- Any specific reinstatement requirements that could affect cost or delivery
- Whether an alternative approach could reduce unnecessary excavation
12. Record Site Conditions with Photographs
Photographs create a useful visual record of conditions at the time of the survey and can provide additional context for planners and delivery teams. Each image should have a clear purpose rather than simply creating a collection of unlabelled site photographs.
Capture relevant images of:
- The proposed work area
- Access and exit points
- Existing infrastructure
- Identified hazards or restrictions
- Surface and ground conditions
- The wider surrounding environment
13. Capture Accurate and Consistent Information
The information collected needs to be understandable to somebody who wasn’t present at the survey. Using consistent questions and clearly recording responses can help reduce gaps between different surveyors, jobs and teams.
Make sure information is:
- Complete and accurate
- Recorded consistently
- Specific rather than vague
- Supported by photographs where useful
- Clearly associated with the correct job
- Accessible to the teams that need it
14. Review Findings and Resolve Outstanding Actions
Completing the survey isn’t the final step. The information collected should be reviewed before work progresses so that anything identified during the visit can be addressed as part of planning.
The findings may highlight a need to:
- Carry out further investigation
- Change access arrangements
- Adjust traffic management
- Provide additional equipment
- Update the proposed approach
- Resolve outstanding risks or restrictions
Physical vs Desktop Site Surveys
Not every site survey needs to begin with a physical visit. Depending on the work and information available, teams may be able to assess a location remotely before deciding whether an on-site survey is required.
Physical Site Surveys
A physical survey provides first-hand visibility of current site conditions, allowing teams to identify constraints and verify details that may not appear in existing records.
Benefits include:
- Up-to-date visibility of site conditions
- First-hand verification of access and constraints
- Current photographs and observations
- Greater detail for complex locations
However, physical surveys require travel and time on site, which can increase costs across multiple jobs.
Desktop Site Surveys
Desktop surveys use available digital information to assess a location remotely. This could include HM Land Registry information, mapping, aerial imagery, Google Maps or Street View, alongside existing job and site records.
Benefits include:
- Reduced travel and survey costs
- Faster initial assessments
- Fewer unnecessary site visits
- Earlier identification of locations requiring further investigation
How Depotnet Supports Site Surveys
Conducting the survey is only part of the process. The information gathered needs to be consistent, accessible and connected to the job so that it can inform what happens next.
Depotnet brings together site surveys, underground asset information and site intelligence to help teams build a more complete picture of the work area before delivery begins.
Build Surveys Around the Work Being Delivered
Depotnet’s Site Surveys feature allows teams to create tailored surveys in the back office and complete them in the field, ensuring operatives capture the information required for each type of job.
Questions can be structured around specific requirements, helping standardise how information is collected across different teams and sites. Findings are recorded against the work alongside supporting evidence and field sign-off, creating an accurate, time-stamped record.
This helps teams:
- Capture consistent information from site
- Identify hazards and environmental risks
- Reduce rework and abortive visits
- Create accountability through field sign-off
- Maintain an auditable record of the survey
Understand What’s Beneath the Work Area
What can be seen during a site visit only provides part of the picture. Where excavation is planned, teams also need appropriate information about underground assets that could be affected by the work.
Depotnet’s LSBUD (LineSearch BeforeUDig) integration allows Safe Dig searches to be requested directly from job records, identifying affected asset owners and returning relevant underground asset drawings and documents.
Bringing this information into the wider job record helps teams:
- Submit and manage underground asset searches
- Access returned drawings and documentation
- Better understand underground infrastructure
- Support safer excavation planning
- Reduce the risk of utility strikes and network damage
Identify Potential Hazards from Live Site Imagery
Alongside the information captured by the operative, Depotnet Intelligence can analyse site imagery and video during pre-risk assessments to identify potential hazards.
Site Intelligence highlights potential risks for the operative to review and prompts them to apply appropriate control measures where required. This provides an additional layer of visibility while keeping the operative responsible for reviewing and managing the risks identified.
This can help organisations:
- Improve the quality and consistency of risk assessments
- Reduce reliance on manual hazard identification alone
- Identify potential risks earlier
- Strengthen auditability and compliance reporting
Bring the Complete Site Picture Together
Together, these capabilities give planning and delivery teams a more complete understanding of the site.
The survey establishes the conditions and requirements of the work area. Safe Dig Automation provides information about underground assets that may not be visible from the surface. Site Intelligence adds another layer by analysing imagery for potential hazards that require attention.
Rather than these records sitting across separate processes, the information can remain connected to the work, giving office and field teams greater visibility as the job progresses.
The result is a site survey process that goes beyond simply completing a checklist. Teams have the information, evidence and site context needed to make better-informed decisions before work begins.