What are BIM estimating services (5D)?
BIM estimating services (5D) link model geometry to cost: we extract quantities from Revit, Navisworks or IFC elements, map them to CSI MasterFormat line items, apply stated waste factors and unit costs, and deliver a cost-loaded workbook you can tie to schedule activities.
Our Professional BIM Estimating Services (5D)
A 5D BIM estimate links quantities pulled from the model to cost and, when the client asks, to schedule. We open the Revit or IFC file, map model elements to CSI MasterFormat divisions, and apply measurement rules so every quantity can be traced to a line item. The result is a quantity survey you can audit, not a lump sum pulled from a black box. For model-based takeoff that feeds a full bid, see our model-based quantity extraction service page.
Model-based quantity takeoffs
We extract material quantities by model element: concrete in cubic yards, formwork in square feet of contact area, rebar in tons by bar size, steel in tons by member type, ductwork in pounds and square feet, conduit in linear feet, and pipe and fittings by diameter and schedule. Each line carries its unit of measure and the model source (level, grid, element ID). Waste factors are applied as a stated percentage by material class, and the workbook shows the raw quantity, the waste factor, and the adjusted quantity side by side.
Labor pricing with stated productivity
Labor is priced from published wage data and productivity assumptions stated in the workbook, with crew mix and hours per unit shown for each line. We break out straight time, overtime where the schedule calls for it, and burdens as separate columns so you can test the rate. For trades where the model lacks detail, we note the assumption instead of hiding it in a composite rate. Our page on full-scope construction estimating explains how the same traceable method applies outside the model.
Bid-ready cost estimates by trade
For bid packages, we organize the takeoff by trade and by bid scope, add material, labor and equipment, and produce a schedule of values that matches the bid form. The PDF summary includes marked-up drawing pages showing where each quantity came from. Where the model and the drawings disagree, we flag the conflict and price the governing document. We also cover hard bid and bid day support when the estimate has to hold up under a live bid opening. You can send your plans and model files together so the estimate reflects both.
What Is Included in Our BIM Estimating Services (5D) Estimates?
Every 5D BIM estimating services package we deliver starts with a model review and ends with a costed, traceable workbook. We map model elements to CSI MasterFormat divisions and, where the client works at a higher level, to Uniformat, so the same quantities can roll up either way. The same element mapping carries into preliminary and conceptual estimating, where early Uniformat-level costs are later reconciled against the model quantities. The sections below show what is measured, how it is measured, and how it is priced.
Model elements, assemblies and work items
We inventory the model by category and family type: walls, floors, roofs, structural framing, foundations, mechanical equipment, ductwork, piping, conduit, cable tray and specialty items. Parametric families are checked for the parameters needed to take off quantities; where a family lacks them, we note the gap and measure from drawings or schedules. Assemblies such as wall types are broken into their layers so each material gets its own line. The workbook lists every work item under its MasterFormat division, with a description you can match to a subcontractor quote.
Quantities, units of measure and waste factors
Each line item carries a unit of measure appropriate to the trade: cubic yards for concrete, square feet for formwork and drywall, tons for rebar and structural steel, linear feet for pipe and conduit, pounds for ductwork, and each for fixtures and equipment. We state the measurement rule used (for example, whether openings are deducted from wall area) and the waste factor applied, which is typical for the material and installation method. The workbook shows the model quantity, the rule, the waste factor and the adjusted quantity so a reviewer can reproduce the arithmetic.
Materials, labor, equipment and cost breakdowns
Costs are split into material, labor and equipment columns, with labor built from published wage data and stated productivity. Equipment is priced by ownership and operating cost or by rental rate, and the basis is shown. The cost breakdown rolls up by MasterFormat division, by Uniformat level, and by WBS if the client provides a work breakdown. Overhead and profit are added only when the client asks, as a separate line. The deliverable is an Excel workbook, a PDF summary and marked-up drawing pages.
Who Needs Our BIM Estimating Services (5D)?
A model-based takeoff is only useful if it fits how the recipient buys work. We format the output for the reader: a trade contractor needs quantities by bid package, a general contractor needs a full cost plan, and a developer needs a summary that supports a pro forma. Our revit takeoff services are built around that split.
Specialty subcontractors
Concrete, steel, mechanical, electrical and plumbing subcontractors use the takeoff to price their scope without re-measuring the model. We deliver quantities by bid package, with line item detail by area and system, so the estimator can apply their own labor rates and supplier quotes. Clash detection output is used to flag where a trade's scope may change before the bid is submitted.
General contractors and home builders
General contractors use the 5D estimate to build a schedule of values, compare subcontractor bids and track cost against the model as design develops. Home builders use it for production housing where the same model repeats; we price the prototype and show the per-unit quantities so options can be added or removed. The WBS structure follows the way the GC buys work.
Developers, architects and suppliers
Developers use the estimate to test feasibility and to support loan or investment packages. Architects use it to check that the design stays within budget at each stage, with quantities tied to the model revision. Suppliers use the material takeoff to plan fabrication and delivery. Each group gets the same traceable quantities, summarized at the level they need.
Types of BIM Estimating Services (5D) Projects We Estimate
The model’s level of detail and the project type change what can be measured directly and what must be assumed. We state those assumptions in the workbook so the estimate can be read at the right AACE estimate class. The sections below describe what changes for each project type.
Residential projects
Residential models often repeat unit types, so we price a prototype and show per-unit quantities for each repeat. Parametric families for doors, windows and fixtures are checked for the parameters needed to count them. For custom homes, the takeoff follows the architect’s model revision, and we note where interior finishes are not modeled. Our construction cost estimates page covers the residential cost side in more detail, and our quantity takeoff services explain how each line is measured.
Commercial buildings
Commercial projects typically have a more developed revit model with defined assemblies. We take off by floor and by zone, which supports a 5D takeoff and cost estimate that can be cost-loaded to the schedule. Where the model is still schematic, we use parametric families and typical assemblies to produce a preliminary estimate, and we label the estimate class.
Industrial and infrastructure projects
Industrial and infrastructure models often come as IFC files from multiple authoring tools. We map elements by classification and by system, and we take off pipe, duct, conduit and steel by size and specification. For infrastructure, quantities may be driven by alignment and station rather than by floor; we state the measurement rule used. The model mapping is documented so a reviewer can trace each line back to the IFC element.
Our BIM Estimating Services (5D) Estimating Process
The sequence below is the same for every model we receive, whether it arrives as a native Revit file, an exported IFC file, or a set of PDF sheets with a linked model. Each step ends with a check that has to pass before the next one starts, so a quantity that reaches your spreadsheet can be traced back to a model element and a measurement rule. Our construction estimating services follow the same discipline on paper-based work, and the same extraction rules feed our budget estimates when a project is still at the concept stage.
Submit drawings and specifications
You send the model plus the drawing set, the specification sections and any addenda, and tell us which bid package or work breakdown the numbers need to fit. We confirm the model version and date, because a quantity taken from a superseded model is worse than no quantity. If the model is partial, we note which scopes will be measured from drawings instead, so the estimate does not silently mix two sources.
Plan review and digital takeoff
We open the model, check that levels, grids and units are set correctly, and map elements to CSI MasterFormat divisions before extracting anything. A model based quantity takeoff is only as good as its mapping: a wall family tagged as generic becomes concrete formwork, studs and gypsum board only after we assign the assembly. Rebar is measured by bar size and total length from the reinforcement schedule, then converted to weight, rather than read from a single volume figure. Where a Navisworks federated model is provided, we use it to confirm that architectural and structural elements agree before quantities are released. Every extracted quantity carries its unit of measure and the rule used to derive it.
Cost calculation, quality checks and delivery
Quantities are priced against national average unit costs adjusted with published wage and price data, then reviewed by an estimator who checks the arithmetic line by line. The quality pass compares model quantities against a second method, such as a rule-of-thumb check on steel tonnage or floor area ratios, and flags any variance for explanation. You receive the Excel workbook, the PDF summary and marked-up drawing pages, with assumptions written next to the numbers they affect. To start, send your plans and the model file.
Sample BIM Estimating Services (5D) Estimate and Deliverables
The example below is illustrative and uses round assumptions so the arithmetic can be checked by hand. Assume a single-story structural concrete slab-on-grade of 4,000 square feet at 6 inches thick, with 12-inch by 12-inch perimeter grade beams, and a waste factor of 5 percent on concrete and 3 percent on reinforcing steel. Concrete volume: 4,000 × 0.5 = 2,000 cubic feet, or 2,000 ÷ 27 = 74.07 cubic yards; with 5 percent waste, 77.78 cubic yards. Perimeter grade beam: 400 linear feet × 1.0 × 1.0 = 400 cubic feet = 14.81 cubic yards; with waste, 15.56 cubic yards. Rebar at 40 pounds per cubic yard of concrete: (74.07 + 14.81) × 40 = 3,555 pounds; with 3 percent waste, 3,662 pounds, or 1.83 tons. Concrete formwork for the grade beam sides: 400 × 2 sides × 1.0 foot = 800 square feet. These are the kind of line items that come out of a model when the assemblies are mapped correctly, and the same rules apply to a model-based takeoff from a Revit file on a full building.
| Item | Qty | Unit | Unit cost range | Extended range |
|---|---|---|---|---|
| Slab-on-grade concrete, 6 in. (incl. 5% waste) | 77.78 | CY | $165 – $210 | $12,834 – $16,334 |
| Perimeter grade beam concrete (incl. 5% waste) | 15.56 | CY | $185 – $235 | $2,879 – $3,657 |
| Reinforcing steel, #4 and #5 (incl. 3% waste) | 1.83 | ton | $1,150 – $1,450 | $2,105 – $2,654 |
| Grade beam formwork, both sides | 800 | SF | $4.50 – $7.25 | $3,600 – $5,800 |
| Total | — | — | — | $21,418 – $28,445 |
Excel quantity takeoff sheet
One row per line item, with the model element ID, the CSI MasterFormat division, the quantity, the unit of measure and the measurement rule written in a notes column. Waste factors sit in their own column so you can change them and see the extended quantity recalculate. A summary tab rolls quantities up by division and by work breakdown structure for the bid package.
Marked-up drawings
The PDF summary includes the drawing pages with quantities highlighted and color-coded by trade, so a reviewer can see which area produced which number. Where a Navisworks quantity takeoff or an IFC file export was the source, the view name and model version are stamped on the page. Discrepancies between model and drawings are flagged in red rather than resolved silently.
Itemized cost estimate
Each quantity is priced with a unit cost range, an extended range and the labor and material split shown separately. The cost estimate is organized by division and by bid package, with assumptions and exclusions listed at the front. Line items that depend on a supplier quote are marked as pending rather than filled with an assumed figure.
Software and Pricing Data We Use
Two things drive the number on the page: how the quantity is extracted and what it is priced against. We keep those separate so you can see which one moved when a total changes. The chart below shows the Producer Price Index series for the materials in this scope, rebased to 100, so the direction of lumber, ready-mix concrete, steel mill products and copper wire and cable is visible across the period.
Takeoff and estimating software
We work in the tool categories the file demands rather than forcing every model into one application. Model review and quantity extraction happen in BIM authoring and clash review environments that read Revit and IFC files; clash detection runs before quantities are locked, because a resolved clash can change a beam depth or a duct route. Pricing and roll-up happen in spreadsheet estimating workbooks linked to a cost database, which is what makes the line-item audit trail possible. The deliverable is always an Excel workbook and a PDF summary, whatever the source format.
Regional material and labor pricing method
Unit costs start from national averages and are adjusted with published U.S. Bureau of Labor Statistics wage data and Producer Price Index series, then reviewed by an estimator for location, prevailing wage and project conditions. The wage table below shows the trades that carry most of the labor in a typical building estimate, from laborers and carpenters through electricians and plumbers. We label each estimate with its AACE estimate class so you know how much contingency the number implies, and steel tonnage is priced from the PPI series rather than a fixed rate. For contractors comparing options, priced cost estimates built from public data stay comparable across projects.
Material price movement, Oct 2023 to Sep 2026
| Occupation | 25th percentile | Median | 75th percentile |
|---|---|---|---|
| Construction laborers | $18.57 | $22.66 | $28.72 |
| Carpenters | $23.32 | $29.12 | $36.94 |
| Electricians | $23.76 | $30.38 | $40.36 |
| Plumbers, pipefitters and steamfitters | $24.13 | $30.67 | $40.92 |
| Cement masons and concrete finishers | $22.60 | $27.41 | $32.15 |
| First-line supervisors, construction trades | $30.48 | $38.42 | $48.78 |
| Cost estimators | $29.40 | $37.86 | $48.97 |
Base wages before payroll taxes, insurance and benefits. Source: BLS Occupational Employment and Wage Statistics, national, all industries.
Why Contractors Choose Our Estimating Services
The reasons are procedural rather than promotional: every number has a source, a rule and an arithmetic trail you can follow. That matters most when a bid package is due and a reviewer has one afternoon to check a hundred line items. Contractors who run professional bid estimating services alongside their own preconstruction staff use the model quantities as the common reference point, so the takeoff, the pricing and the bid form all trace back to the same elements.
Trade-specific expertise
A model is not trade-neutral, and neither is our takeoff. Mechanical scope is measured by ductwork weight and fitting count, electrical by conduit runs and device counts, structural steel by tonnage and connection type. An IFC model takeoff is only useful if the estimator knows which elements belong in which bid package, so we map by trade before pricing. The level of development (LOD) of each element is noted, because a schematic wall at low LOD cannot support a finish takeoff without assumptions.
Quality control and clear assumptions
Every estimate carries a written assumptions page: what was measured from the model, what came from drawings, what was excluded and what depends on a supplier quote. A second estimator checks the arithmetic and the unit of measure on each line before delivery. Where a model is incomplete, we say so on the line item rather than filling the gap with a number that looks final.
Turnaround, communication and revisions
Delivery dates are agreed when we review the plans, based on the scope and the model quality, and confirmed in writing before work starts. Questions during the takeoff go to one named contact so answers do not get lost between threads. Revisions are handled against the same workbook, with changed lines flagged, so you can see what moved between issues. The fee is quoted per project after we review the plans; request a quote with the model and drawing set attached.
BIM Estimating Services (5D) Pricing
The fee for our bim estimating services (5d) is quoted per project after we review the model and the drawing set. There is no rate card, because a 40,000 sq ft warehouse shell with a single concrete trade and a hospital fit-out with 20 trades do not carry the same quantity extraction effort. We open the Revit or IFC file, check the level of detail, count the sheets and alternates, and then quote a fixed fee in writing.
If your model is not ready for cost loading, we can still price from the drawings and reconcile the two later. Send the file set through our full-scope estimating team page and we will tell you what the model supports before quoting.
| Slab | Length x width | Thickness | Area (sq ft) | Net volume (cu yd) | Order qty at 5% waste (cu yd) |
|---|---|---|---|---|---|
| S-1 interior slab | 60 ft x 40 ft | 6 in | 2,400 | 44.44 | 46.67 |
| S-2 loading apron | 50 ft x 30 ft | 8 in | 1,500 | 37.04 | 38.89 |
| S-3 equipment pad | 20 ft x 15 ft | 12 in | 300 | 11.11 | 11.67 |
How quotes are calculated
A quote is built from three inputs: the number of sheets and model views to be reviewed, the number of CSI MasterFormat divisions in scope, and the number of alternates and addenda to be priced separately. A model with clean parametric families and mapped Uniformat codes takes fewer review hours than one where every wall is a generic in-place mass. We price the review, the quantity extraction, the unit-rate build-up and the PDF summary as one fixed fee.
The slab calculator below is a working example of the arithmetic we apply to a model element. It takes length, width, thickness and a waste percentage, then returns the area, the cubic feet, the net cubic yards and the order quantity. A 60 ft by 40 ft slab at 6 in thick gives 2,400 sq ft and 1,200 cu ft, which is 44.44 cu yd net; at 5% waste the order quantity is 46.67 cu yd. The same rule set applies to every concrete line in the takeoff.
What affects price and delivery time
Sheet count, trade count and addenda volume move both the fee and the date. A single-trade material takeoff from a coordinated model is a shorter review than a 12-division bid package with three alternates and a 5d bim cost loaded schedule tied to a WBS. Model quality matters too: unhosted elements, duplicate families and unmapped conduit runs all add review time.
Delivery time is confirmed with the quote, not before it. The date is driven by the bid date, the number of addenda issued after the first model drop, and how quickly model mapping questions come back to us. When the bid date moves, we re-quote the schedule rather than assume the original date holds.
Slab quantity takeoff
- Area
- 2,400 sq ft
- Volume
- 800 cu ft
- Net concrete
- 29.63 cu yd
- Order quantity
- 31.11 cu yd
Formula: length × width × (thickness ÷ 12) ÷ 27 = cubic yards. Thickened edges, footings and pump waste are taken off separately.
BIM Estimating Services (5D) Across the US
We run bim estimating services (5d) for projects in all 50 states from one team, so the model review and the quantity extraction follow the same rules regardless of where the job sits. What changes is the pricing input behind each line item. Labor rates differ by market, and public work often carries prevailing wage requirements that reset the labor half of every assembly.
Material delivery is the second regional variable. A steel package priced near a mill or fabricator carries a different freight allowance than the same tonnage delivered to a remote site, and pipe fittings, valves and specialty conduit can add weeks to a schedule. Climate and code adoption shift the specification as well; confirm the local code edition with the building department before the cost estimate is finalized.
Cost loading a schedule also depends on regional crew productivity and on how the local market sequences trades. Our model-based quantity takeoff service applies the same model element rules everywhere, then adjusts unit rates with published wage and price data for the project's location.
Frequently Asked Questions
How much does a BIM estimating services (5D) estimate cost?
The fee is quoted per project after we review the model and the scope it has to cover. Model size, level of development, how many trades the takeoff spans, and whether the cost estimate is loaded to a schedule all move the fee. Send the Revit, Navisworks or IFC file with the scope notes and we return a written quote that states the assumptions.
How long does a BIM estimating services (5D) takeoff take?
The delivery date is set when we quote, after we have opened the model and counted the elements and views involved. Model cleanliness, the number of linked files, and how many bid packages the quantities feed all affect the schedule. We confirm the date in writing with the quote so you can plan your bid calendar around it.
Do you estimate labor and material costs?
Yes. Material quantities come from the model, and labor is priced by crew and productivity against published U.S. wage data, then reviewed by an estimator. Each line shows the quantity, unit, waste allowance and the wage basis so you can see how the number was built. Equipment and subcontract items are carried as separate lines rather than folded into a lump sum.
What drawings do you need?
Send the native Revit model or an IFC export, plus any Navisworks files used for coordination, the specification sections, the schedule of values format you want, and the bid date. If the model is incomplete, send the drawings that fill the gaps. We flag elements we could not map before we start so nothing is priced on a guess.
Can you use my estimate template?
Send your template with the plans and we confirm whether the estimate can be delivered in it. Most workbooks with a defined WBS, CSI MasterFormat division codes and a schedule of values layout can be populated directly. If the template's structure conflicts with how the quantities are extracted, we say so before starting.
Do you sign NDAs?
Clients can request an NDA before sending drawings, and the terms are agreed before plan review begins. Send the document with your first message so it is executed before any files move. We do not publish a standard NDA policy, so each agreement is handled on its own terms.
What is the difference between a BIM quantity takeoff and a 5D cost estimate?
A model-based quantity takeoff extracts counts, lengths, areas and volumes by element and maps them to CSI MasterFormat divisions. A 5D estimate takes that same quantity set, applies unit costs, waste factors and labor rates, and can load the result onto the construction schedule. Our bim estimating services (5d) deliver both in one workbook so quantities and costs stay linked.
Which model formats can you take off?
We work from native Revit files, IFC exports and Navisworks models. Revit gives the cleanest quantity extraction because parametric families carry type parameters and assembly codes; IFC is used when the authoring platform differs, and we check classification mapping before extraction. Navisworks is useful for federated models where several trades are combined.
How do you handle model elements that carry no cost information?
Every element is mapped to a CSI MasterFormat division and a unit of measure before pricing. Generic or placeholder families, unclassified IFC objects and elements modeled without type parameters are listed on a model mapping log and resolved with you. Anything that cannot be resolved is excluded and noted, never priced silently.
Can you produce a cost-loaded schedule from the model?
Yes. Quantities are grouped by work breakdown structure and by area or floor, then tied to the activity sequence so the estimate can be cost loaded against the program. The workbook shows the quantity per activity and the cost per activity, which supports progress billing and earned value reporting. We confirm the WBS structure with you before loading.
Do you check the model for clashes before taking off quantities?
We review the model for duplicate elements, overlapping geometry and unhosted objects that would double-count quantities. Full clash detection is a coordination task, and we report clashes that affect quantity accuracy rather than running a complete coordination cycle. The findings go on the mapping log with the affected line items.
What level of development does the model need to be at?
Quantities are only as complete as the model. At LOD 300 we can take off most architectural and structural elements; MEP quantities at that level are usually approximate and are flagged as such. At LOD 350 and above, conduit, pipe fittings and ductwork runs can be measured directly. We state the LOD assumed in the estimate basis.
How do you set waste factors in a model-based takeoff?
Waste is applied by material and by trade, not as a single percentage across the estimate. Concrete, rebar, lumber, drywall and finishes each carry a typical allowance that reflects how the material is ordered and cut. The waste line is shown separately on each line item so you can adjust it without recalculating the base quantity.