AS BUILT SURVEYS
East Anglia · Hertfordshire · Essex · London · South East
Constructionline Gold | SSIP Accredited | Achilles | 17 PAYE Engineers
Trimble X9 laser scanning · BIM as-built models · Deviation reporting
CALL US ON: 01279 927 033
✅ Constructionline Gold ✅ SSIP Accredited ✅ Achilles Registered ✅ Trimble & Leica Equipment
✅ All Engineers PAYE — No Agency Workers ✅ £5m Public Liability & £5m Professional Indemnity
AS BUILT AND VERIFICATION SURVEYS
AKN Engineering provides as-built and verification surveys to main contractors, developers, architects and structural engineers across East Anglia, Hertfordshire, Essex, London and the wider South East. When you need certainty that the build matches the design, we provide the measured proof.
Using the Trimble X9 laser scanner and robotic total stations, we capture the completed or in-progress works at survey-grade accuracy and deliver the data as a registered point cloud, an as-built CAD drawing or a BIM model — all tied into your project coordinate system.
We are not an agency.
Every surveyor is directly employed by AKN Engineering, so you get consistent quality and a clear, accountable record you can rely on at handover and beyond.
Handover Looming and Your As-Built Records Don't Stack Up?
Handover Looming and Your As-Built Records Don't Stack Up?
It surfaces at the worst possible moment — the build is finished, the next trade is waiting, and nobody can prove what's actually there.
Maybe the frame drifted a few millimetres and the cladding no longer fits. Maybe the as-built file is a marked-up PDF that nobody trusts. Maybe the design team needs a verified model before they'll sign off the next stage. Every one of these stalls the programme.
AKN Engineering removes the guesswork. We scan what's actually built, register it to your control, and hand you a verifiable record — and, where you need it, a deviation report that shows exactly where reality differs from design.
Every AKN as-built survey gives you:
✅ Survey-grade point cloud from the Trimble X9, registered to site control
✅ As-built CAD drawing or BIM model in your required format
✅ Deviation / clash reporting against the design model — colour-coded heat maps
✅ Verification that key elements are within the engineer's tolerance
✅ Clean handover and O&M documentation
✅ Surveyors who understand RC frame, steel frame and fit-out verification
Why Choose AKN Engineering
✅ Trimble X9 — Survey-Grade Laser Scanning
High-density, accurate point clouds captured fast, ideal for as-built verification, BIM and dimensional control on complex structures.
✅ Registered to Your Site Control
Every scan is registered and controlled to your project coordinate system, so as-built data ties into setting out, design and survey across the whole job.
✅ Deviation & Verification Reporting
We overlay as-built against as-designed and report the differences clearly — so you know precisely what's in tolerance and what needs attention before it becomes a problem.
✅ BIM-Ready Deliverables
Point cloud, as-built DWG or Revit/BIM model — produced to drop into your design environment, not a generic export.
✅ Constructionline Gold, SSIP & Achilles Accredited
Full supply chain compliance with £5m public liability and £5m professional indemnity insurance.
✅ Fast Mobilisation — Typically 48–72 Hours
Scan windows are often tight; we mobilise quickly across our core coverage area to fit your programme.
SECTORS AND PROJECT TYPES
📍 RC frame — residential & commercial
📍Steel frame & industrial
📍Data centres & logistics
📍Highways & infrastructure
📍Rail & transport
📍Education & healthcare
📍Heritage & refurbishment
📍Energy & renewables
📍Piling & groundworks
📍Commercial fit-out
📍Nuclear & major infrastructure
📍Utilities & drainage
LOCATIONS WE COVER
HERTFORDSHIRE
BEDFORDSHIRE
CAMBRIDGESHIRE
NORTHAMPTONSHIRE
LONDON
ESSEX
KENT
OXFORDSHIRE
BERKSHIRE
NORFOLK
SUFFOLK
LINCOLNSHIRE
RUTLAND
AKN Engineering is based in Bishop's Stortford, CM23, and covers the following above as standard. Projects outside these areas considered — please call to discuss.
AS-BUILT SURVEY SERVICES
Our as-built and verification surveys cover the full scope of construction records and check work:
🚧 As-built point cloud capture 🚧 As-built CAD drawings (DWG
🚧 BIM as-built / scan-to-Revit models 🚧 Dimensional control & verification
🚧 Deviation analysis vs design model 🚧 RC frame & slab level verification
🚧 Steel frame & connection checks 🚧 Cladding & façade setting-out checks
🚧 Floor flatness & level surveys 🚧 MEP / services as-built records
🚧 Pile & founation as-built surveys 🚧 Handover & O&M documentation
🚧 Progress / interim as-built scans 🚧 Volume & earthworks as-built
OUR SERVICES
SETTING OUT SURVEYS
MEASURED BUILDING SURVEYS
CONTROL POINT SETTING OUT
TOPOGRAPHICAL SURVEYS
SITE ENGINEERING
PILING SETTING OUT
DRONE SURVEYS
DESKTOP UTILITY SEARCH
UNDERGROUND UTILITY SURVEYS
3D LASER SCANNING SURVEY
GPR SURVEYS
TRUSTED BY
FAQs
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An as-built survey records exactly what has been constructed, as opposed to what was designed. AKN Engineering captures the completed (or in-progress) works using the Trimble X9 laser scanner and robotic total stations, then delivers the result as a point cloud, an as-built CAD drawing or a BIM model — providing an accurate, verifiable record of the real geometry on site.
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As-built surveys confirm that construction matches design within tolerance, provide an accurate base for the next trade or design stage, support handover and O&M documentation, and create an auditable record for verification, dispute avoidance and future alterations. They are especially valuable on RC frame, steel frame and fit-out works where downstream elements depend on precise geometry.As-built surveys confirm that construction matches design within tolerance, provide an accurate base for the next trade or design stage, support handover and O&M documentation, and create an auditable record for verification, dispute avoidance and future alterations. They are especially valuable on RC frame, steel frame and fit-out works where downstream elements depend on precise geometry.
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An as-designed model shows the intended geometry from the drawings. An as-built model shows the geometry that was actually constructed, captured by survey. AKN Engineering can overlay the two and produce a deviation report — typically a colour-coded heat map — showing exactly where and by how much the build differs from design.
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Depending on your needs: a registered point cloud, an as-built AutoCAD DWG, a Revit/BIM as-built model, and deviation or comparison reports against the design model. We agree the deliverable format and tolerance with you before we mobilise.
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The Trimble X9 delivers survey-grade accuracy suitable for dimensional verification and BIM. AKN Engineering registers and controls every scan to your site network so the as-built data ties into the same coordinate system as the rest of the project.
GET IN TOUCH
Contact AKN Engineering today to discuss your as-built or verification requirements.
We'll confirm scope, tolerance and deliverable format, then mobilise quickly.
📞 Call: 01279 927 033
📧 Email: office@aknengineering.co.uk
📍 Based: Bishop's Stortford, Hertfordshire, CM23
🕐 Hours: Monday–Friday, 07:00–18:00
AKN Engineering Limited is a specialist site engineering and surveying company registered in England and Wales (Companies House No. 12237423), based in Bishop's Stortford, Hertfordshire. We provide as-built surveys, verification surveys, dimensional control, BIM as-built models and deviation reporting to main contractors, developers, architects and structural engineers across East Anglia, Hertfordshire, Essex, London, Kent, Cambridgeshire and the wider South East.
As-built data is captured with the Trimble X9 laser scanner and robotic total stations, registered to your site control and delivered as registered point clouds, as-built DWG drawings and Revit/BIM models. AKN Engineering holds Constructionline Gold accreditation, SSIP certification and Achilles registration, and carries £5m public liability and £5m professional indemnity insurance.
Also see: 3D Laser Scanning → | Topographic Surveys → | Site Engineering → | Volume Analysis