The short version
B-Line Surveys is a UK digital surveying business led by Jimmy Irvine. It laser-scans existing buildings and turns the results into the drawings and 3D models that architects, designers, engineers and contractors need before they design or build. It covers Winchester, London and Brighton, with scanning delivery and local business development in East Sussex handled by a second member of the team.
The foundation is Jimmy's experience: more than 36 years in construction, over a decade delivering projects in the UAE, and three years as managing director of Urban Surveys, capturing more than three million square metres across the Middle East and North Africa. B-Line applies that experience to the UK market at a different scale.
The business is self-funded and revenue now covers its running costs. The aim is to build, over roughly five years, a business with enough value to sell. Because Jimmy runs it alongside existing work commitments, the priority is a client base and a way of working that do not depend on any one person's availability.
That shapes my brief: get on the phone to the contacts Jimmy provides, use those conversations to build out a wider prospect list, present and convert work, and reinvest the proceeds into scaling capacity. Roughly two days a week.
What B-Line offers
Drawn from b-linesurveys.com as it read in September 2026.
The offer
The work is grouped into four outcomes. Design development gives architects reliable as-built data to design from. Construction planning adds architectural, structural and existing mechanical and electrical drawings for coordination and clash detection. BIM modelling converts scans into Revit models at LOD 200, 300 and 400, shared through BIM 360. Renovation and digital records creates an archived 3D record of a building, aimed particularly at heritage repair and restoration.
The service list runs to measured building surveys, topographic surveys, 3D laser scanning, BIM modelling and heritage recording.
Capability
Capture is done with a Leica BLK360 G2, a compact, fast scanner well suited to moving through occupied buildings and tight interiors. Additional freelance surveying capacity is being brought in as demand requires.
Positioning
The message the site returns to is the bridge between construction precision and design sensibility, equally comfortable with sensitive heritage restoration and commercial fit-out. In practice B-Line is the responsive, personal option for small and mid-sized projects, which is a genuine point of difference against larger national surveying firms.
Early opportunities
A handful of straightforward improvements that would strengthen conversion, most of which cost time rather than money. The website and social accounts are managed by the agency that looks after them, so these are things to agree and pass on rather than change unilaterally.
Make the accuracy message consistent
The page description that appears in Google and in link previews mentions sub-millimetre scanning, while the site quotes 4mm at 10m, which is the scanner's published specification. Aligning the two on 4mm removes an inconsistency that technical buyers notice, and 4mm is a strong, defensible number in its own right.
Show the work
There is currently no project gallery, client list or sample deliverable on the site. A point cloud, a finished floor plan and a Revit view from two or three completed jobs would do a great deal, since buyers are choosing on confidence. Anonymised examples work where client names cannot be used.
Give each service its own page
The four services are listed in the footer but do not have pages of their own. Individual pages, for example measured building surveys in London or 3D laser scanning for heritage buildings, are how firms in this sector get found in search and give something specific to send a prospect after a call.
Clarify how topographic work is delivered
Topographic surveys of land and larger sites typically call for GNSS or total station equipment alongside a building scanner. Confirming whether that is owned, hired or delivered with a partner lets us quote it confidently.
Add the trust signals buyers look for
Company number, registered address, professional indemnity and public liability cover, and any accreditations are the details larger clients check before adding a supplier. Separating the newsletter opt-in from the enquiry consent on the contact form is also worth doing while the site is being touched.
Where B-Line sits, and what the Urban Surveys model teaches
Urban Surveys, which Jimmy led as managing director, is a digital surveyor operating from Dubai and London. Its work is large-scale and Gulf-first: Dubai International Airport, Mall of the Emirates, Souk Madinat and KAFD in Riyadh, for clients including Emaar, Dubai Holding, Atkins, Arup and Grimshaw. The relationship today is friendly rather than commercial, with no shared ownership or referral arrangement.
B-Line is deliberately the UK counterpart at a different scale: small and mid-sized refurbishment, fit-out and heritage projects, won on responsiveness and personal service rather than on framework scale. That distinction is useful, because it tells us which clients to pursue and which to leave alone.
Worth borrowing
Three things from that model translate directly. The first is starting with the end in mind: most surveys go wrong because the client's required output was not pinned down before anyone went to site, so a short scoping conversation protects both margin and reputation. The second is proof grouped by sector, so a prospect immediately sees work that looks like their own. The third, and commercially the most significant, is services that bring clients back during construction, such as progress monitoring and as-built verification, rather than a single survey at the start of a project.
How digital surveying works
Before anyone redesigns, extends, refurbishes or fits out an existing building, they need an accurate record of what's actually there. Original drawings are often missing, wrong or decades out of date. A measured survey fixes that. Traditionally it was done with tapes and a total station; today the core method is laser scanning.
The scanner sits on a tripod and spins, firing a laser that records millions of points, each a precise x, y, z position. Scanning a building means setting up in dozens or hundreds of positions. Those scans are then joined together (registration) into a single point cloud: a ghostly, measurable 3D copy of the building like the one at the top of this page.
Clients rarely want the point cloud alone. The value is in what's made from it, and this is where most of the labour and margin sit. A day on site can easily generate several days of drafting or modelling back at the desk, which is why many firms outsource modelling to offshore teams.
The deliverables
| Deliverable | What it is | Typical buyer |
|---|---|---|
| Point cloud | The registered raw scan, viewable in free or specialist software | Engineers, BIM teams, contractors |
| 2D CAD drawings | Floor plans, sections and elevations, usually in AutoCAD | Architects, interior designers, planning applications |
| Revit / BIM model | An intelligent 3D model where walls, doors and pipes are objects with data | Larger architects, M&E consultants, main contractors |
| Topographic survey | A map of land levels, boundaries, trees and features | Developers, landscape architects, civil engineers |
| Heritage record | Detailed archive of a historic building's condition | Conservation architects, estates, public bodies |
| As-built / verification | Checking what was built against the design | Contractors, project managers |
Accuracy and detail are two different things
Accuracy is how close a measurement is to reality (B-Line's scanner: 4mm at 10m). Level of detail, usually written as LOD 200, 300 or 400, is how much gets modelled. At LOD 200 a wall is a generic block; at LOD 300 it has correct size, shape and position; at LOD 400 it's detailed enough to fabricate from. Higher LOD means more modelling hours and a higher price, so pinning down the LOD at quote stage is where jobs are won or lost profitably.
The kit landscape
Scanners range from compact units like the Leica BLK360 (quick, light, ideal for interiors) through larger survey-grade terrestrial scanners from Leica, Trimble and Faro (longer range and higher accuracy for big sites), to mobile and handheld scanners you walk around with, and drones for roofs, facades and land. Most firms own one or two and hire or partner for the rest. Software typically includes Leica Cyclone for registration and Autodesk Revit, AutoCAD and ReCap for modelling and drawing.
Who buys, and how work is won
The buyers
The most frequent buyers are architects and interior designers starting a refurbishment, extension or change of use. Behind them come main and fit-out contractors, M&E and structural engineers, project managers and quantity surveyors, developers, and property or facilities managers who need accurate floor plans for leasing and maintenance. Heritage and conservation work is a distinct niche that values care and reputation over price.
What triggers a purchase
Common triggers include a planning application, the start of design on a refurbishment, a tenant fit-out, a retrofit to improve energy performance, and pre-construction coordination on complex buildings. In England, the Building Safety Act has also increased pressure on owners of higher-risk buildings to hold accurate, up-to-date building information.
How work is won
In this sector work mostly comes through relationships and repeat business. An architect who gets fast, reliable drawings from a surveyor tends to use them again and recommend them internally. Speed matters twice: in turning quotes around quickly, and in delivering in time for a design deadline. Larger contractors and public bodies buy through approved supplier lists and frameworks, which require insurance, health and safety paperwork and sometimes accreditation before you can even quote. Jimmy's existing contacts are the fastest route in, and the work is converting those introductions into first jobs, and first jobs into repeat clients.
Pricing levers
Surveys are usually priced by floor area, by site days plus modelling days, or per project. The main variables are building size and complexity, access and occupancy, required LOD, output format, turnaround and travel. Setting rates and understanding the margin left after modelling costs is one of the first things to pin down together.
Competition
The UK market runs from large national firms such as Plowman Craven, Greenhatch Group and Murphy Surveys, through regional specialists, down to many small operators and sole traders. Those names are a starting point rather than a full map. Firms of B-Line's size compete on responsiveness, personal service and a clear niche rather than on scale, which is where the heritage and design-aware positioning earns its keep.
Glossary
- As-built
- A record of a building as it actually exists, as opposed to how it was designed.
- BIM
- Building Information Modelling: working from shared, data-rich 3D models. In the UK it is governed by the ISO 19650 standards.
- BIM 360 / Autodesk Construction Cloud
- Autodesk's platform where project teams share models and documents.
- BLK360 G2
- Leica's compact tripod laser scanner, B-Line's main tool.
- Clash detection
- Checking a model for conflicts, such as a new duct running through an existing beam.
- GNSS / RTK
- Satellite positioning that places a survey accurately on the map.
- LOD
- Level of detail (or development) in a model, from 100 (rough massing) to 500 (verified as-built).
- M&E / MEP
- Mechanical, electrical (and plumbing) services in a building.
- Measured building survey
- An accurate survey of an existing building, producing plans, sections and elevations.
- Point cloud
- The collection of millions of measured 3D points produced by scanning.
- Registration
- Aligning many individual scans into one combined point cloud.
- Revit
- Autodesk's BIM modelling software, the industry default in UK architecture.
- Scan-to-BIM
- Turning a point cloud into a Revit model.
- SLAM / mobile scanning
- Scanning while walking, faster but generally less accurate than tripod scanning.
- Tier-one contractor
- The largest main contractors, such as those leading major developments.
- Topographic survey
- A survey of land surface, levels and features.
- Total station
- A precise electronic instrument for measuring angles and distances, used for control and topo surveys.
- RICS
- The Royal Institution of Chartered Surveyors, the main professional body, which publishes guidance on measured surveys.
Approach
A working sequence for the first months, to agree and adjust together.
- Build the contact base. Jimmy's contacts go into the shared lead tracker, with the context for each: how he knows them, how warm they are, and whether to mention his name. That gives us one list to work from and the beginnings of a picture of who the best clients look like.
- Work the warm list by phone. Calls first, email second. The aim of each call is a conversation rather than a sale: what they have coming up, how they currently get their surveys done, and what frustrates them about it.
- Extend into colder prospects. Use what those conversations reveal to build out a wider prospect list, and let the tracker show which sectors, project types and areas convert best rather than deciding that in advance.
- Present and convert. A clear capability one-pager, sample deliverables and a consistent quote format, so a prospect can see exactly what they get and what it costs.
- Make growth deliverable. Tidy the quote, booking, delivery and invoicing steps, and line up freelance capacity ahead of demand, so that rising enquiries turn into completed jobs and repeat clients.