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Custom estimating and job costing software

Estimating software turns plans, measurements and site visits into a priced bid using your own material costs, labor rates and markups, then compares the estimate to what the job really cost. Zoti builds custom estimating software around how your estimators already price work, starting at $499/month.

Updated November 3, 2026

Starts at
$499/month
Best for
Contractors and fabricators estimating from big, fragile spreadsheets
Includes
Design, build, hosting and ongoing changes

What estimating software needs to do

In many contracting and fabrication businesses, the real estimating system is a spreadsheet one senior estimator built over fifteen years. It works, but nobody else can use it, a broken formula can cost a job’s whole margin, and there is no link between what was bid and what the job really cost. Estimating software should cover:

  • A cost database of materials, labor rates, equipment and subcontractor prices, updated in one place.
  • Assemblies: a wall, a roof square, a fixture install or a machined part, built from items so one quantity prices everything inside it.
  • Takeoffs from plans, either measured on screen or imported from a takeoff tool, feeding quantities into the estimate.
  • Markups, overhead, contingency and margin rules, with minimums so nobody bids below cost by accident.
  • Alternates and options, so a bid can show a base price and add-ons.
  • Bid management: due dates, invitations from general contractors, which bids are out, won or lost and why.
  • Proposals generated from the estimate in your format, with scope, exclusions and terms.
  • Job costing: actual hours, materials and subs compared with the estimate, line by line, while the job is running.

Off-the-shelf estimating tools vs custom

For many trades, an off-the-shelf tool is the right starting point. Takeoff software such as PlanSwift and STACK measures from digital plans, construction platforms such as Buildertrend and Procore include estimating alongside project management, and there are trade-specific estimating products for roofing, electrical, plumbing and other specialties. If your method matches what these tools assume, use them.

Custom estimating software pays off when your pricing method is your edge:

  • You price in ways the tool cannot model, such as custom fabrication, unusual production rates or formulas that depend on site conditions.
  • Estimates need data from several places: supplier price lists, your inventory, past job costs and labor availability.
  • You want job costing to feed back into future estimates automatically, so prices improve with every job.
  • Field staff, sales reps or customers need to build simple quotes themselves, within rules the estimator sets.
  • Estimates have to flow into your project, purchasing and accounting systems without retyping.

What we build into custom estimating software

  • Your existing spreadsheet logic, rebuilt as tested calculations that the whole team can use without breaking them.
  • A cost library with supplier price imports, so material changes update every open estimate you choose to refresh.
  • Estimate templates per job type, with assemblies and default quantities to speed up common work.
  • An estimating app for site visits, capturing measurements, photos and notes that land directly in the estimate.
  • Bid tracking with win rates by job type, customer and estimator.
  • Job costing connected to time tracking, purchase orders and accounting, with alerts when a job drifts over budget.
  • Integrations with takeoff tools, accounting software and your CRM or project system.
  • AI where it is useful: reading supplier quotes and price sheets into the cost library, or drafting the scope and exclusions section from the line items (see our AI quoting page for quote automation).

How an estimating software project works

  1. Learn your methodWe sit with your estimators and take apart your current spreadsheets, price lists and recent bids.
  2. Prove the mathWe rebuild a handful of past estimates in a prototype and check the totals match to the cent.
  3. Design the screensYou click through estimating, proposal and job costing screens before the full build.
  4. Build in roundsEstimating comes first, then proposals, bid tracking and job costing, each round reviewed with you.
  5. Run side by sideEstimators bid live jobs in both systems until they trust the new one, then the spreadsheet is retired.

Trades where estimating makes or breaks the job

Construction and roofing contractors bid on thin margins where one missed line matters. Electrical contractors price labor units across hundreds of devices. Manufacturing and screen printing shops quote custom orders where setup time and materials change with every run. Surveyors and interior designers estimate fees from scope that varies job by job.

More operations software: work orders, asset tracking, compliance tracking and fleet management.

Questions

Common questions

What is the best estimating software for contractors?

It depends on your trade and how you price. Takeoff tools and construction platforms suit contractors whose method matches theirs. If your estimates depend on custom formulas, past job costs or several data sources, custom estimating software usually fits better.

What is the difference between takeoff software and estimating software?

Takeoff software measures quantities from plans: lengths, areas and counts. Estimating software turns those quantities into a price with materials, labor, markup and overhead. Many businesses use a takeoff tool and feed its quantities into their estimating system.

Can you turn our estimating spreadsheet into software?

Yes. We rebuild the formulas as tested logic, check them against past estimates until the totals match, and add what the spreadsheet cannot do, such as multiple users, version history and job costing.

What is job costing software?

Job costing software tracks the actual labor, materials, equipment and subcontractor costs on each job and compares them with the estimate, so you can see profit while the job is running instead of after it closes.

How much does custom estimating software cost?

Zoti custom projects start at $499/month, which covers design, development, hosting and ongoing changes. The price depends on how complex your pricing is and how many systems the estimates connect to, and you get a written quote first.

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