Site Measurement & Takeoff for General Contracting

Open the bid invitation, project factsheet, and initial estimate structure. Identify which divisions and bid items you are responsible for measuring and which will be covered mainly by subcontractor quotes.

Create a list of takeoff categories (sitework, structure, envelope, interiors, MEP, etc.) and note the level of detail required for each (detailed quantities vs allowances or check quantities).

Decide and document units for each item (SF, LF, CY, EA) and any standard measurement conventions (for example, centerline vs face of stud, net vs gross areas).

Mark which quantities belong to base scope versus alternates or optional pricing. Plan separate columns or sections for these so they are not mixed later.

List items where you will not do detailed takeoff because pricing will be driven entirely by vendor or subcontractor quotes (for example, certain specialty systems).

Write these rules and decisions into a short “Takeoff Scope & Rules” note and save it in the bid folder. Share the location with anyone assisting on takeoff so everyone follows the same approach.

Import the architectural, structural, civil, and MEP PDFs into your digital takeoff tool in a new project. Confirm the project name matches the bid record.

Arrange sheets in logical groups (A, S, C, M, E, P, FP, etc.) and confirm sheet names and numbers display clearly. This makes it faster to move between related sheets.

On at least one sheet per discipline, calibrate the drawing scale using a known dimension. Verify that measurements in the software match printed dimensions within an acceptable tolerance.

Set up layers or color schemes that you will use to differentiate elements (for example, partition types, concrete types, piping vs ductwork). This helps you see what has been measured and what has not.

Confirm you can add notes, highlights, and callouts on drawings. Test saving and re-opening to ensure markups persist and do not corrupt files.

Create a brief note within the project or in the bid folder that lists the drawing issue date and any addenda included at this stage. Update this if new drawings are issued mid-takeoff.

Start from your company’s standard takeoff workbook if available. If none exists, create a new spreadsheet with sections for each major division and trade.

For each row, include fields for item description, quantity, unit, cost code, drawing reference (sheet/detail), and notes/assumptions. This structure makes each line traceable.

Input or import the relevant cost codes from the current estimate structure so you can select codes from a list rather than typing them freehand. This reduces coding errors.

Include columns or tabs that differentiate base quantities from alternates and potential unit price items. Clearly label these so they can be reported separately.

Create simple pivot or summary tabs that roll up quantities by trade or division. These will be used later to check for completeness and reasonableness.

Save the workbook in the “Takeoff_Working” area of the bid folder and add a link to it in the bid tracking record. Confirm anyone helping with takeoff can open and edit it.

Select a single floor plan (for example, Level 1) and, if the building is large, focus on one zone at a time. Avoid jumping between levels or zones to keep your work organized.

Use area measurement tools to capture gross building area and, where helpful, net usable areas by major function (for example, office areas, back-of-house, corridors). Record these in the takeoff workbook.

Using color-coded tools, trace each partition type and record linear footage in the workbook, grouped by wall type (for example, fire-rated, non-rated, shaftwall). Reference wall type tags and specs.

From plans and door schedules, count doors and frames by type, size, and rating. Record counts with references to door numbers and relevant sheets.

Move systematically through each floor, repeating the same steps. Mark sheets or zones as complete in your drawing viewer to avoid rework or confusion later.

After completing all levels, quickly scan plans again for rooms or areas that may have been skipped, especially small rooms or service spaces. Correct and update quantities as needed.

Read structural general notes and schedules to understand typical footing sizes, slab thicknesses, reinforcement, and framing systems before measuring.

On foundation and floor plans, measure footings and slabs to obtain areas or lengths, then convert to volumes using specified thicknesses. Record CY of concrete and SF for any finishes or toppings.

Count and measure beams, columns, joists, and decks by type and size as shown on framing plans and schedules. Record lengths or piece counts as appropriate.

Using typical bar spacing and areas, estimate reinforcing steel quantities for major elements (slabs, footings, walls) and record tonnage or pounds per element.

On civil drawings, measure curb, sidewalk, asphalt, and concrete paving lengths and areas. Estimate cut/fill volumes at a high level if required by the estimate.

Document key assumptions such as average slab thickness or typical reinforcing pattern in the notes column so later reviewers understand how the numbers were derived.

From elevations, wall sections, and specs, list each exterior wall type, glazing system, and roof assembly used on the project.

Using elevations and plans, measure SF of each wall type, accounting for changes in height and offsets. Subtract major openings only where required by pricing logic.

From schedules and elevations, count windows, curtainwall sections, and exterior doors by type and size. Record SF and EA quantities in the workbook.

On roof plans, measure SF of each roof assembly type and LF of parapets, edges, and gutters/downspouts as required for roofing and sheet metal pricing.

Identify and measure quantities for special envelope elements such as sunshades, louvers, or canopies, noting any unique details or materials.

Do a final pass over elevations to check that all visible envelope elements have been captured and categorized correctly. Adjust quantities and notes where needed.

Open the room finish schedule and finish legends. Identify the codes and descriptions for floors, base, walls, and ceilings used throughout the project.

Using floor plans and finish schedules, measure SF of each flooring type by room or area. Record quantities by type (for example, carpet vs LVT vs tile) in the workbook.

From reflected ceiling plans, measure SF of each ceiling type (suspended grid, gypsum, specialty). Note any areas with no ceiling or exposed structure.

If wall finishes vary by room or type, estimate SF of specialty finishes such as tile, wood paneling, or acoustic wall panels. Use average heights and room dimensions where detailed dimensions are not shown.

Identify quantities of items such as wall graphics, feature walls, and decorative elements that need separate pricing. Record counts and approximate areas as needed.

Verify that your takeoff includes each finish type listed on the schedules and that no finish appears with zero quantity unless clearly not used on this project.

From MEP plans and schedules, list key systems: air handling units, RTUs, boilers, chillers, main panels, switchgear, generators, pumps, and main distribution.

Count plumbing fixtures, terminal units, panels, and other tagged equipment from schedules and plans. Record counts by type, noting any special features or mounting conditions.

Using plans and riser diagrams, measure approximate LF of main duct trunks and major pipe mains by size range. Group smaller branch runs where detailed measurement is not practical.

For electrical, measure or approximate LF of major feeders and conduit banks shown on one-line and power plans. Focus on higher-cost feeders and distribution rather than every branch circuit.

Mark systems such as fire alarm, low voltage, or security to be priced primarily through subcontractor quotes rather than detailed takeoff. Note any simple counts (for example, devices) that support sanity checks.

In the takeoff notes, clearly state that MEP quantities are for budget and cross-checking purposes, and list major assumptions such as typical fixture counts per room type or standard branch spacing.

In the takeoff workbook, create a tab or section labeled “Assumptions & Clarifications.” This will hold short entries about assumptions, gaps, and clarifications tied to quantities.

Each time you assume something for takeoff (for example, “assume 9'-0" ceiling height where not dimensioned”), write it into the assumptions log immediately with the related drawing reference.

Document any conflicts between drawings and specs or missing dimensions that affected quantities. Indicate whether these have been submitted as RFIs or are being carried as a risk.

In the main takeoff table, use a short ID or note that links back to the detailed assumption entry so reviewers can trace the context for a quantity quickly.

Mark assumptions that significantly affect cost (for example, assumed rock excavation, extent of abatement) so they are easy to find during estimate review and risk discussions.

Before finalizing takeoff, walk through the assumption list with the estimating lead to confirm which items need to be highlighted in clarifications, contingencies, or risk notes.

Use your workbook summaries or reports to produce totals for key items: SF of walls, CY of concrete, SF of roofing, counts of doors and fixtures, etc.

Check whether major quantities make sense given the building area and type using internal benchmarks (for example, typical LF of partition per SF of office). Investigate values that appear too high or low.

Select a few representative rooms or areas and manually verify that all major elements (walls, finishes, fixtures) in those areas have been captured correctly in the takeoff.

Verify door counts, fixture counts, and other scheduled items against your takeoff quantities. Resolve any discrepancies by rechecking the drawings and schedules.

Look for elements that might have been measured twice, such as site concrete appearing both under civil and architectural, or walls taken off from both plan and elevation. Correct any duplicates.

Make any needed corrections and update related assumptions. Save the workbook as a clearly labeled version (for example, “Takeoff_Final_PrePricing”) and note the date in the file name.