Estimate Assembly for General Contracting

Open your estimating software and choose the standard template that best matches this project type (for example, ground-up building, interior fit-out, sitework). Using the right template saves setup time and reduces missed cost categories.

Fill in project name, client, location, bid due date, and other header information. Confirm that these details match the bid log and any client forms to avoid confusion later.

Ensure the template includes the current company cost code structure. Add or adjust codes if this project has unusual scopes that need their own line items.

Set up high-level groupings (for example, CSI divisions, building wings, or phases) according to how the client wants the bid broken down. These groupings will drive reporting and proposal formatting.

Within each division, designate which items will be self-performed, which will be subcontracted, and which will use vendor-supplied materials only. This separation supports clear cost ownership.

Save the estimate file with a clear name such as “Estimate_StructureOnly_ProjectName” so you can always return to a clean structured version if issues arise later.

Locate the final takeoff file approved for use on this bid. Confirm that it includes all addenda and clarifications received to date and that any known corrections have been incorporated.

For each takeoff line, identify the corresponding cost code or item in the estimate. Where a single takeoff line feeds multiple cost items, decide how to split quantities and note this in your takeoff file.

Input quantities into each cost item, ensuring that units (SF, LF, CY, EA) match both the takeoff and the estimate item setup. Use import tools if available to reduce manual entry.

Mark any quantities that are based on allowances or incomplete information as provisional in the estimate notes. These will be important to discuss during risk and review stages.

Use summary or audit reports to compare key quantities in the estimate (for example, total SF of slab or total number of doors) against totals in the takeoff workbook. Resolve any major discrepancies.

After confirming that quantities are correctly loaded, save the estimate as a new version labeled “QuantitiesLoaded_Date” to mark this milestone before pricing and markups are applied.

Access the final comparison sheet for each trade that shows leveled bids and the selected “basis-of-bid” subcontractor. Confirm that addenda and clarifications are included in the selection.

For each trade, determine which cost codes or estimate items correspond to that subcontractor’s scope. Use your bid package matrix and scope notes as a guide.

Input the chosen subcontractor’s base bid amount into the appropriate items or groups in the estimate. If the software allows, tie the cost line to the subcontractor’s name or ID for reference.

Enter prices for alternates and required unit prices into clearly labeled alternate or unit price sections in the estimate, ensuring they match how the client expects them presented.

In the notes for each trade’s cost items, record major inclusions, exclusions, and any important assumptions from the subcontractor’s proposal. This documentation will help during internal review and later buyout.

Run a summary by trade in the estimate and confirm that totals for each subcontracted scope match the selected numbers on your comparison sheet. Correct any mismatches and save the estimate.

Access the final vendor comparison sheets that identify which supplier’s pricing you are using for each material or equipment category. Confirm that the selections are approved by the estimating lead.

Identify which estimate line items correspond to each vendor-quoted material or piece of equipment. Use your “Vendor Quote Item List” and scope descriptions as a guide.

Input unit prices or lump sums from the chosen vendor into the estimate items. Ensure quantities in the estimate line up with how the vendor priced the materials so totals are correct.

Add separate cost lines or adjust unit prices to account for freight, taxes, fuel surcharges, or other adders noted in the vendor quotes. Document how these are handled in the notes.

For each major vendor-based item, add a note stating which vendor’s quote was used and the quote date. This helps reviewers and purchasing teams understand the pricing source.

Generate a report or quick summary of material and equipment costs by category and check that totals align with your comparison sheets. Resolve discrepancies before moving on.

Review the estimate structure and mark which cost codes will use your own crews rather than subcontractors. Focus on tasks like concrete placement, selective demolition, or carpentry where you typically self-perform.

Ensure that fully burdened hourly labor rates and productivity factors (units per hour) are current for each trade. Update rates if your most recent rate sheet has changed.

Have the estimating software calculate labor hours based on quantities and productivity. Spot-check a few items to make sure hours are reasonable and units are not mismatched.

For each self-perform activity, add equipment charges and small tool allowances using your standard percentages or time-based rates. Link these costs to the related labor items for clarity.

In the notes for significant self-perform items, record key assumptions about crew size, shifts, and working conditions (for example, night work, occupied space), as these drive productivity.

Compare total self-perform labor and equipment costs to similar past projects or unit cost benchmarks. Investigate and adjust items that appear significantly out of line.

Look at the latest project schedule or duration assumptions and note total project length, key milestones, and any phased turnover requirements that will affect staffing and site setup.

Identify the project roles needed over the life of the job (for example, project manager, superintendent, project engineer, field engineer). Estimate how long each role will be on site based on project complexity and phasing.

Apply loaded monthly or hourly rates for each role and multiply by the estimated duration. Enter these costs under appropriate general conditions cost codes.

List items such as trailers, toilets, temporary power and water, fencing, security, temporary heat, and cleanup. Use company standards and project logistics notes to estimate quantities and durations.

Using vendor quotes, historical rates, or standard allowances, assign costs to each temporary facility and service, making sure they cover the full duration required.

Review the total general conditions cost as a percentage of total direct costs and compare it to similar projects. Note any unusual items or deviations for discussion in estimate review.

Check with the estimating lead or leadership on the target fee percentage, overhead recovery, and any special requirements for this client or project type. Note whether the job has a minimum or negotiated fee.

Configure your estimating software to apply overhead and fee to the correct base (for example, total cost, cost minus certain exclusions). Ensure the logic matches company policy and any client instructions.

Get current rates for performance/payment bonds and any special insurance (for example, builders risk, professional liability) applicable to this project size and type.

Apply the rates to the appropriate cost base (often cost plus overhead and fee) and add distinct line items for bonds and special insurance so they are visible in the estimate.

Review the resulting fee, overhead, bond, and insurance totals as percentages of total cost. Confirm they match internal expectations and that the overall risk load feels appropriate.

In a dedicated notes section, record assumptions about fee, overhead, bond, and insurance, including rates used and any client constraints. This supports future negotiations and internal review.

From the “Instructions to Bidders” and bid forms, list all required alternates, unit prices, and allowances. Note exactly how each must be described and presented in your proposal.

In the estimate, set up clearly labeled sections or items for each alternate and unit price. Ensure they are separate from base scope so toggling and reporting are simple.

Using subcontractor quotes, vendor quotes, and internal costing, enter the best available cost for each alternate and unit price. Make sure assumptions and scope boundaries are clear in item notes.

For required allowances (for example, floor finishes not fully defined), choose reasonable amounts based on similar work and clearly label them as allowances in both the estimate and notes.

Ensure that when an add alternate is selected, overlapping base scope is not also being counted. Adjust base or alternate items where necessary and document the logic.

Generate or manually compile a summary showing each alternate and unit price with description and cost. This will feed directly into proposal preparation and internal review.

Gather any owner budgets, previous conceptual estimates, or internal pro formas for the project. Note the basis and date of each so you understand how comparable they are.

Generate summaries by division, trade, and major building element (for example, structure, envelope, interiors, MEP, general conditions). Capture total cost and cost per SF where relevant.

Check how your estimate totals compare to owner budgets and to unit costs from similar completed projects. Focus on major deviations rather than small differences.

For trades or divisions far above or below expectations, drill into the estimate to see whether differences come from scope changes, unit costs, productivity, or contingencies.

Write brief explanations for key variances, such as scope additions, market escalation, or unusual site conditions. These notes will be useful in internal and client-facing discussions.

If reconciliation reveals genuine errors or overly conservative assumptions, correct them. Avoid “chasing a number” without a clear basis. Save a new estimate version after any adjustments.

Choose reports such as “Summary by Division,” “Summary by Trade,” “General Conditions Detail,” and “Alternates and Unit Prices.” Ensure report formats match what your company typically uses for review.

Generate selected reports from the estimating software and export them into a review-friendly format. Check that page headers, footers, and dates are correct and readable.

Create a one- or two-page summary showing total base bid, key alternates, major cost drivers, general conditions, fee, and contingency. Include cost per SF and high-level comparisons to any targets.

From your notes and logs, compile a list of major assumptions, clarifications, and exclusions that underpin the estimate. Organize them into categories for easy reading.

Combine the executive summary, key reports, alternates summary, and assumptions list into a single digital package or folder. Label it clearly as “Estimate Assembly – Internal Review Package.”

Save the package in the bid folder and add a link to it in the bid tracking system. Notify the estimating lead that the estimate is assembled and ready for the formal Estimate Review process.