Commercial As-Built Drawings for TIs, Hotels & Due Diligence
Commercial As-Built Drawings: Certainty Before You Design and Renovate
Field notes for property owners, asset managers, hotel operators, architects, and commercial brokers across Alberta, British Columbia, and Saskatchewan.
Most commercial buildings in Western Canada have a paper trail that stops somewhere in the 1990s or early 2000s. The original construction set is in a box, a previous tenant moved two walls and never filed the drawings, and the mechanical room no longer matches the last contractor’s mark-up. When a new lease, a tenant improvement, a hotel renovation, or a sale starts moving, those gaps stop being an inconvenience and start showing up as change orders, delayed occupancy, and arguments over rentable area.
Commercial as-built drawings close that gap. They are not the original blueprints. They are a current, measured record of how the building actually sits today: walls, doors, ceiling conditions, major MEP, and the quirks that never made it onto the last revision. Teams search for both as-built drawings and as built drawings; the files are the same. What matters is that they match the building, not the last issued set.
This post covers what belongs in a commercial as built set, how a professional measurement team produces it, and where the drawings earn their keep in tenant improvements, hospitality renovations, leasing, and due diligence.
What Commercial As-Built Drawings Actually Are
As-built drawings (also called record drawings, existing-conditions plans, or as built plans) are scaled, dimensioned CAD or BIM files that document the present state of a property. For commercial work, that usually means more than a marketing floor plan. A usable set gives architects, contractors, brand teams, and leasing groups a base they can design from, bid from, and attach to a lease.
A complete commercial as built package commonly includes:
- Dimensioned floor plans for each level, with partitions, structure, doors, window dimensions, and and sill heights
- Reflected ceiling plans showing grid, lighting, diffusers, and major ceiling-mounted equipment
- Interior and exterior elevations where facades, storefronts, or lobby conditions matter
- Key MEP locations: electrical rooms, panels, major ducts, sprinkler mains, plumbing stacks, and rooftop units
- Site plans when parking, loading, or building footprint affects the work
- Roof plans when equipment needs to be maped out.
- Optional point-cloud or LiDAR deliverables for complex floors, heritage interiors, guest-room typicals, or tight coordination
- Fire escape and evacuation plans when occupancy, brand, or authority having jurisdiction requires them
The files themselves are typically issued as print-ready PDFs plus native DWG so the design team can work directly in AutoCAD or the design program of their choice. Layered CAD is the difference between a drawing people look at and a drawing people can actually use.
Why Original Construction Drawings Are Not Enough
Original drawings describe intent. Commercial buildings accumulate decades of tenant work, code upgrades, accessibility retrofits, and quiet field changes that never circled back to the architect of record.
Common mismatches we see on site:
- Demising walls that moved during a previous TI, so the suite is smaller or larger than the lease exhibit
- A “non-load-bearing” partition that now carries a beam or a duct run
- Ceiling heights that drop around rooftop structure or a later sprinkler main
- Electrical panels and data closets that migrated into former storage rooms
- Washrooms and shafts that no longer line up with the last issued floor plate
- Hotel guest-room typicals that no longer match after a soft-goods or bathroom reno
Those discrepancies are cheap to find with a tape and a scanner. They are expensive to find after a contractor has mobilized.
How Professional Commercial As-Builts Are Drafted
Step 1: Field measurement
Work starts on site, not at a desk. A measurement technician who is certified in architectural technology walks the floor with a laser measuring tool and manually draws the plans on a tablet. On larger or more congested projects, or areas that require volumetric measurements, LiDAR scanners are used to produce a point cloud model of the space.
The point of the visit is a field-verified dataset: room-by-room dimensions, wall thicknesses, door swings, ceiling heights, column grids, and notes on anything that will affect design or leasing. That might be a 1,200 sq. ft. CRU on 17th Avenue in Calgary, a 250-key hotel in Vancouver, or an 80,000 sq. ft. warehouse outside Winnipeg. The method scales; the requirement does not change. Nothing is left to memory or to a PDF someone emailed in 2014.
On occupied floors, the team works around tenants and guests. That matters more than it sounds. Government suites, medical offices, operating retail, and live hotels all have access constraints. A crew that has done this work for years plans the visit so the as built record is complete without turning the day into a disruption.
Step 2: Drafting in CAD or BIM
Field notes and scan data go into AutoCAD or Revit. The output is a clean commercial drawing set, not a sketched floor plan for a listing flyer. Typical sheets:
- Floor plans with consistent dimension strings and architectural symbols
- Reflected ceiling plans when a TI will touch lighting, HVAC, or a ceiling grid
- Elevations and sections where storefront, lobby height, or structure needs to be visible
- Layered files so electrical, furniture, or demolition can sit on their own layer
For projects that will live in BIM, the point cloud can be modelled rather than just traced. That is useful on multi-floor towers, hotels, hospitals, and industrial plants where clashes cost more than the extra modelling time.
Step 3: Quality control and delivery
Before files leave the office, dimensions are checked against field notes, symbols are cleaned up, and the set is formatted so it prints and plots without surprises. Clients usually receive:
- High-resolution PDFs for circulation and permit packages
- DWG files for the design team
- Layered CAD with trade notes where requested
- Point-cloud files when LiDAR was part of the scope
Who Uses Commercial As-Built Drawings
- Building owners and asset managers keep a current record for leasing, capital planning, and future TIs instead of hunting for a 20-year-old set every time a suite turns over.
- Architects and interior designers start design on a measured base rather than redlining an old PDF and hoping the columns are still where the drawing says they are.
- Contractors and project managers produce tighter bids and fewer RFIs. Material take-offs and ceiling coordination are only as good as the existing-conditions file.
- Tenants and tenant reps test-fit a floor plate and budget a build-out before they sign. Usable area that does not match the brochure is a negotiation problem, not a surprise after possession.
- Brokers and leasing teams attach accurate plans and, where needed, BOMA area figures to listings and offers. Buyers and institutional tenants increasingly expect current documentation as part of diligence.
- Hotel owners, asset managers, and brand teams use as built drawings to plan PIPs, F&B renovations, and back-of-house work without taking rooms out of inventory longer than necessary.
- Lenders, appraisers, and legal counsel want to know what the asset actually is. As-builts sit beside environmental reports and surveys in a serious commercial file.
Where the Drawings Pay for Themselves
Use case: commercial tenant improvement
A retailer signs a five-year lease on a second-generation bay. The landlord hands over the last tenant’s construction drawings. During design, the architect finds that a demising wall was shifted, a grease duct was added, and the ceiling grid does not match the RCP in the file.
Without a current as-built, that discovery happens after consultants are engaged and a contractor is pricing the job. With a measured set, the design starts on the real floor plate, the TI allowance conversation is honest, and occupancy is less likely to slip.
Use case: leasing and rentable area
A property manager is re-leasing two floors of an office building in downtown Calgary. The last BOMA figures are a decade old. Suites have been combined and split. Common corridors were reconfigured during a lobby renovation.
A new as-built floor plan is the base for an ANSI/BOMA area analysis. That analysis can change load factors, rentable area, and how the building is marketed. It also gives incoming tenants a plan they can send to their own architect without a site visit on day one. Pair the drawings with listing photography and a 3D tour, and the leasing package is complete rather than pieced together.
Use case: acquisition due diligence
A buyer is under contract on a mixed retail and office asset in Edmonton. The data room has a 2008 architectural set and a stack of TI permits. No one can say, with certainty, that the drawings match the existing building.
Commissioning commercial as-built drawings during diligence is cheaper than inheriting a documentation problem. The buyer’s design team can price near-term capital work. The lender sees a clearer picture of the physical asset. After closing, the same files become the owner’s operating record instead of sitting unused in a deal folder.
Use case: industrial and warehouse space
Clear height, column spacing, dock positions, and the real location of fire protection and power are the whole conversation on industrial deals. A warehouse measured from old drawings will miss a mezzanine that was added, a racking line that changed travel paths, or a sprinkler main that limits future mezzanine work. As built drawings and, on larger plants, LiDAR scans give brokers and occupiers numbers they can underwrite.
Use case: hotels and hospitality
A hotel is a commercial building that has to stay open while it is being documented. Guest rooms, corridors, kitchens, laundry, meeting space, and the parking structure all change over a property improvement plan, and the last architectural set rarely keeps up. Brand design teams still need current as-built floor plans before they can confirm a typical room, a suite mix, or whether a corridor width will survive a new FF&E package.
As built drawings for hospitality work usually go beyond a single floor plate. Owners ask for guest-room typicals, public-area plans, back-of-house layouts, reflected ceiling plans in banquet and lobby space, and elevations at the canopy or facde when a rebrand is coming. BOMA Z65.4 covers multi-family and hospitality area when the question is rentable or reportable square footage rather than design. Fire escape and evacuation plans often ride along with the same field visit because the occupancy map has to match the real exits, not the exits on a ten-year-old life-safety sheet.
UrbanMeasure is a preferred measurement provider for several major hotel brands. That work is repeatable across flags and markets in Alberta, British Columbia, and Saskatchewan: occupied-property access, consistent CAD standards so brand and local architects can share files, and turnaround that fits a PIP window rather than a leisurely close-out. Mountain markets such as Banff and Canmore add another constraint. Seasonal occupancy is high, loading docks are tight, and the as-built set has to be captured without taking the house out of service. We are able to move efficiently and without disturbing hotel guests or operations.
What a Thin As-Built Set Costs You
Incomplete documentation shows up as rework. Industry studies regularly put poor or missing project information among the leading causes of commercial construction rework. On a tenant improvement or a hotel PIP, the expensive misses are predictable:
- No current RCP, so the new ceiling grid fights existing diffusers and structure
- No MEP as-built, so a plumber or electrician discovers a main that was never drawn
- No updated floor plan, so usable area, furniture layouts, or guest-room typicals are wrong from the first test fit
- No site or loading information, so a permit or a dock schedule slips
Those problems are not theoretical. They become change orders, idle labour, and a tenant who is late opening. A measured drawing set will not prevent every field issue. It removes the ones that come from designing against a building that no longer exists.
As-Builts and BOMA Measurements Work Together
As-built drawings and ANSI/BOMA area calculations are related but not the same service. The as-built is the physical record. The BOMA analysis is the leasing math applied to that record under the correct standard: office (Z65.1), industrial (Z65.2), retail (Z65.5), multi-family (Z65.4), or mixed-use (Z65.6).
You can produce a floor plan without running a full BOMA takeoff. You should not run a BOMA takeoff on a plan that has not been checked against the building. If the walls are wrong, the rentable area is wrong, and the lease exhibit inherits the error. The same rule applies to hotel area schedules produced under Z65.4.
Owners who keep both current spend less time arguing about area when a suite turns over and less time reconstructing history when the building goes to market.
How to Scope a Commercial As-Built Project
A useful brief tells the measurement team what the drawings have to support. Before you book, decide:
- Is this for a single suite TI, a full floor, a hotel stack, or the whole building?
- Do you need RCPs and major MEP, or architectural floor plans only?
- Do you require exterior elevations?
- For hospitality, do you need guest-room typicals, public areas, back-of-house, and life-safety plans?
- Will the files go into AutoCAD, Revit, or both?
- Is LiDAR justified by congestion, heritage fabric, guest-room repetition, or coordination risk?
- Do you also need a BOMA certificate, marketing floor plans, or photography for the same visit?
Combining measurement and media on one site visit is often the practical move. The crew is already on the floor. Adding photography, drone work, or a 3D tour can make excellent referencing tools, which can save unnecessary site visits.
A Current Drawing Set Is the Cheap Part of the Project
Commercial as-built drawings are not the part of a deal anyone puts in a pitch deck. They are the file the architect opens on Monday morning and the plan the contractor prices against. When that as built set matches the building, design moves, bids tighten, and leasing conversations stay on rent and term instead of “the space isn’t what we were shown.”
If you found this useful, read the companion pieces on ANSI/BOMA office measurement, industrial buildings, mixed-use standards, and the Z65.4 multi-family and hospitality standard. Those posts cover how area is calculated once the as-built exists.
Need commercial as built drawings for a hotel, restaurant, or a multi-unit retail space? UrbanMeasure has measured commercial and residential buildings across Alberta, British Columbia, and Saskatchewan for more than two decades, and is a preferred provider for several major hotel brands. The team produces field-verified floor plans, elevations, RCPs, LiDAR scans, and BOMA area analysis, with CAD and PDF deliverables the design team can use immediately.
See commercial as-built drafting and LiDAR services, or request a quote for the property you are working on.
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