As-built surveys in Northern Ireland provide a measured record of features after construction or alteration. 360 Surveys NI works with clients who need drawings of completed work, existing buildings or defined site features for their project records and future decisions.
From Portadown, we cover Belfast, Armagh, Craigavon and the wider region. Whether you need a measured building survey for an alteration or a record of specific completed works, the brief should explain what is to be recorded and how the information will be used. That is the starting point for a useful survey and a clear quotation.
What an as-built survey records
An as-built survey records the features included in its scope as they exist at the time of the visit. It can support record drawings and provide measured information for subsequent work. The precise detail depends on the purpose, access and visibility of the features concerned.
The term should not be taken to mean that every part of a building or site has been investigated. Concealed elements, inaccessible areas and features outside the agreed coverage may not be recorded. Those limits should be clear to anyone using the deliverable later.
A measured record is also different from a statement that all work complies with a design or approval. If the project needs comparison against design information, tolerance checks or another specific assessment, include that requirement explicitly when discussing the scope.
Who needs this service?
Contractors and developers may need records of completed works. Property owners and facilities teams may want clearer information about a building they manage. Architects and engineers can use measured information when preparing an alteration, refurbishment or extension.
An older building in Armagh may have drawings that no longer match its layout. A completed development in Craigavon may need particular external features recorded. A commercial property in Belfast may require a measured record while remaining occupied. Each situation calls for a different plan for coverage and access.
Tell us who will use the output and what decision it needs to support. That helps distinguish a straightforward record drawing from a more detailed measured survey or a brief that requires additional professional input.
Measured building surveys and existing property
A measured building survey focuses on the geometry of an existing structure. Depending on the agreed appointment, the output may include floor plans, elevations or sections. These can form a basis for design work where reliable existing drawings are unavailable or incomplete.
Identify the rooms, storeys and external areas that need to be included. Explain any requirements for particular features, heights or section positions. A general request for a building survey can mean different things, so describe the intended use instead of relying solely on the service name.
Measured drawings are not the same as a structural appraisal or a report on defects. If you are concerned about condition, movement or a proposed structural alteration, explain that separately so the appropriate survey or professional advice can be identified.
Records of completed construction
For completed works, establish which features need to be surveyed and when they will be accessible. Some information is easiest to record at a particular construction stage, while other features may be obscured or covered later. Coordinate that timing with the contractor before commissioning the visit.
Provide the relevant design information if the record needs to be considered alongside it. Identify the drawing revisions, coordinate reference and level datum. The resulting information should clearly distinguish measurements from any details supplied by other members of the project team.
Our published service offering includes as-built surveys for record drawings and related project purposes. If your contract calls for a particular submission, schedule or comparison, send those requirements at the quotation stage. Acceptance by another party should not be assumed from the service name alone.
Choosing deliverables and the right detail
Agree the drawing formats with the people who will use the information. A PDF can be useful for review, while a designer may need CAD information in an agreed format. Floor plans, elevations and sections are separate outputs whose extent should be specified.
Decide which details are necessary for the next stage of the project. A basic layout record is not automatically sufficient for detailed fabrication or every aspect of construction design. The deliverable should be appropriate to the purpose, rather than either missing essential features or collecting information with no clear use.
Ask for the survey date, references and limitations to be identifiable in the issued information. Where older drawings are supplied as background, their role should be clear. This helps later users understand what was measured and what came from another source.
What it costs
As-built survey cost depends on coverage, complexity, access and deliverables. For a measured building survey, the number of storeys, internal layout, required elevations and sections all help define the work. External completed-work surveys require their own coverage and feature specification.
Send a site plan or existing drawings, the property address and a description of what needs to be recorded. Explain whether the building is occupied, whether all rooms are accessible and whether the visit must be coordinated with a construction stage. Include the requested output formats and programme.
A tailored quotation should state the agreed scope and exclusions. If you are comparing prices, check that the same areas and outputs are included. Additional coverage, more section drawings or a return visit after access becomes available may involve a change to the original appointment.
Preparing an occupied building or site
Arrange access with the people responsible for the premises and identify a contact for the visit. Confirm keys, locked rooms, roof access arrangements where relevant and any induction requirements. Explain operational restrictions before the survey is booked.
For occupied properties, coordinate the visit with users so the agreed areas can be accessed appropriately. Stored materials, furniture and equipment may limit visibility. Discuss any preparation with the surveyor; do not assume that an inaccessible feature can be measured indirectly to the required detail.
For construction sites, establish which works are complete and what will change before the appointment. If the purpose is to capture a particular stage, a programme change can affect the value of the visit. Keeping the surveyor informed helps ensure the record reflects the intended point in the project.
Comparing records and planning future work
An as-built record can help a team understand the starting point for future design, maintenance or alteration. Its usefulness depends on scope, currency and compatibility with the other information being used. Review those points before reusing a survey commissioned for a different purpose.
If design comparison is required, agree which features and tolerances are to be assessed and who will interpret the findings. A drawing of measured positions does not automatically include an engineering judgement about whether a difference is acceptable.
Keep the issued files and accompanying notes together. If the building or site changes later, record that change in the project information and consider whether updated measurements are needed. An old survey remains a record of its survey date, even when the file is opened years afterwards.
Related surveys across Northern Ireland
Our building survey service provides further information about measured work on existing structures. A topographical survey can record external features and levels around the property. For suitable projects, drone surveying can contribute additional aerial information.
Clients in Belfast, Armagh, Craigavon and Portadown can discuss the combination of information their project needs. Separate services should be coordinated with clear coverage and references, rather than assuming that one appointment includes every possible record of the property.
Request an as-built survey quote with your address, plans and intended use of the drawings. If you have a handover specification or designer's brief, include it so the required deliverables can be discussed before work is arranged.
Frequently asked questions
What is an as-built survey?
It is a measured record of agreed features as they exist at the survey date. The coverage and deliverables depend on the appointment, and inaccessible or concealed elements may fall outside the scope.
Is a measured building survey the same as a condition report?
No. A measured building survey records geometry such as plans, elevations or sections. A condition report or structural appraisal addresses different questions and should be requested separately where needed.
Can you survey an occupied property?
Occupied properties can be discussed, with access and operational restrictions included in the brief. Confirm which areas can be accessed and whether the visit needs to be coordinated with residents, staff or site activities.
Does an as-built survey certify compliance?
A measured record does not automatically certify compliance with every design requirement or approval. If comparison, tolerance checks or another assessment is required, define that work explicitly in the appointment.
What information is needed for a quotation?
Provide the address, plans, required coverage, intended use, requested outputs and timescale. Explain access restrictions and whether the survey needs to capture a particular construction stage.