Short answer: AI estimating for contractors means software that reads plans and pulls quantities, or turns a tech's spoken notes into a written estimate, with a person reviewing before the price goes out. In this directory contractors have used Beam AI, Togal.AI, Drawer AI, Countfire, Monco, Quotr.ai, BlueBoost and ChatGPT; the table compares them on facts from each tool's page.
I'm Daniel Massaad. Estimating is where AI for contractors shows up most clearly in public case studies: plan takeoffs that used to take a week, first-pass symbol counts, and techs who talk through a job instead of typing a proposal. Quoting & estimating is the densest task tag on Trades AI Use Cases for a reason. This page pulls the clearest sourced examples together so you can see what shops actually did — with the original link — instead of another "AI takeoff software" landing page.
The three kinds of AI estimating
Plan takeoff. Software reads PDF drawings and counts or measures for you. Used by plumbing, electrical and general contractors in this directory (Beam AI, Togal.AI, Drawer AI, Countfire, Monco, Quotr.ai).
Measurement and roof reports. Aerial or satellite imagery turned into roof measurements you price from. Mostly roofing and solar (EagleView, Roofr; see AI for roofers).
AI-written proposals and follow-up. A tech's spoken notes or a custom GPT become a written estimate. Service plumbing and HVAC, and roofing repair in our entries (BlueBoost, ChatGPT).
Figures come from the linked sources and are vendor-reported unless the source says otherwise.
What AI estimating actually looks like
Plan / PDF takeoffs. Software reads sheets, pulls pipe, fittings, fixtures or symbols; a human (or vendor QA) reviews before it hits the estimate. Harner Plumbing / Beam AI and Intermountain Electric / Drawer AI are clear public examples.
Quantities straight into the estimate. No spreadsheet re-entry. Stevens Construction / Togal.AI maps takeoff quantities into Ediphi.
Voice-to-estimate on site. Tech talks through findings; customer-ready write-up comes back. That's Cornel's Plumbing / BlueBoost — different product, same "less typing" idea.
Custom GPT on your own job history.Leakbusters built a GPT tied to manufacturer specs and past jobs for Florida repair estimates.
Real estimating and takeoff use cases on this site
Harner Plumbing, a full-service residential and commercial plumbing company in Mantua, Ohio (founded 1977), was doing its takeoffs by hand with tools like FastPIPE. One bid could take up to a week, so the team could only get out one or two bids a week. Since December 2024 it has used Beam AI, which reads PDF plan sheets and pulls out pipe lengths, fittings, fixtures and equipment, with the vendor's QA team reviewing each takeoff before it's delivered. Beam AI reports that Harner saves about seven days per takeoff and increased bid volume 4.5x; Assistant Project Manager Danell Zarrelli is quoted on Beam AI's site saying the team went "from 2 bids a week to 8–9, with no extra hires." Figures are vendor-published and not independently audited.
Stevens Construction, a general contractor in healthcare, industrial and data center work, runs preconstruction with just four estimators. Its team does AI-assisted quantity takeoffs in Togal.AI and uses Togal's native integration with its estimating platform, Ediphi, so quantities flow into the estimate already mapped to the right cost items instead of being exported to spreadsheets and re-entered. When drawings change, estimators review the updated quantities and decide what to accept. Director of Preconstruction Nick Burkell says setup took an afternoon: they exported their cost database, Togal mapped it, and they were running after a short training. Estimating engineer Evan Lopes says the four-person team now turns out as many estimates as local GCs with much larger departments. Vendor case study; no hard figures claimed.
Intermountain Electric's estimators run drawings through AI for first-pass lighting, power and receptacle counts, branch routing, panel and lighting schedules, and drawing stitching, then review and correct it before anything goes into the estimating system. The case study says one high-volume takeoff that used to take several 15-hour days was done in a few hours, and that the AI gets branch measurements about 95% of the way before human QA.
Cornel's Plumbing, Heating & Air Conditioning, a family-owned shop in the Portland, OR metro area, has had its technicians write estimates with BlueBoost since June 2024. Instead of typing a few technical lines on a tablet, a tech talks through what they found and the AI turns each option into a clear, detailed write-up a homeowner can follow, which matters on big jobs like repipes and trenchless sewer replacements. BlueBoost reports, from its own dashboard for June 2024 through Oct 11, 2026, more than 17,500 estimates on jobs totaling $13.4M in sales, a 26.4% higher average ticket and 10% more estimates per job versus jobs written without it, and an estimated 1,460 hours of writing saved (assuming five minutes per estimate). Vendor-reported figures.
Family-owned WTC Electric in Charlotte, NC faced rising bid volume, driven partly by data-center demand, and couldn't find another estimator. It moved takeoffs to AI device detection and automated branch routing, with the vendor's human concierge team handling peaks and poor-quality drawing sets. Drawer AI reports a 70% reduction in takeoff time on large projects and device detection accuracy above 95%.
Owner Richie Kleti's team built a custom GPT, tied to historical job data and manufacturer specs, that turns a short voice prompt into an itemized, code-compliant Florida repair estimate. New hires can produce accurate estimates without waiting for senior staff to price every job. The team also uses an AI sales coach in role-play "sales cage match" sessions, where reps are mic'd up and get feedback on tone, objection handling and what to do better.
ChatGPTArticle / interviewContractor Marketing Pros · Dec 2025
UK contractor Bojen Electrical uploads tender drawings and builds its takeoff with automatic symbol recognition, keeping a permanent, editable count list for each job. The estimator says that working through the drawings this way also gives him a clearer picture of how the job will actually run. He priced a roughly £2.5 million lighting refurbishment of an Oxford research building entirely in the tool, splitting each floor into zones.
German electrical contractor Rudolf Fritz (about 650 employees) uses automated quantity takeoff from PDF plans for bids. In the first five months after its March 2026 rollout, it processed 364 plans across 18 projects, detecting 71,073 elements and measuring 85 km of cable tray. Takeoffs now take hours instead of weeks, and the team says it can price more inquiries instead of passing on projects for lack of capacity.
Extracts quantities from PDF plans and specs; done-for-you takeoffs are QA-checked by people (vendor says 24–72 hours); instant DIY takeoffs for HVAC, plumbing and steel.
Commercial contractors, subs, suppliers
Not published in our directory entry; check the vendor
Detects devices and fixtures on PDF drawings, reads panel schedules, routes branch circuits with wire sizing and voltage drop, exports Excel and marked-up PDF.
Electrical
Not published in our directory entry; check the vendor
Counts symbols, measures lengths and areas across plan sets; an AI agent answers questions about drawings; pricing from your cost database or Quotr’s zip-code averages.
Construction contractors
Not published in our directory entry; check the vendor
Satellite roof measurement reports, proposals, CRM job boards, material ordering and payments; Instant Estimator and an AI Receptionist add-on.
Roofing
Free Starter plan; paid plans $109–$349/month; Instant Estimator $149/month; AI Receptionist $99/month, as of Oct 19, 2026
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Every cell comes from the tool's page in this directory, which was checked against the vendor's own website. Not a ranking or endorsement; features and pricing change, so confirm with the vendor.
How to choose AI estimating software
Match the trade. Plumbing takeoffs, electrical symbol counts and roof estimates are different products. Drawer AI, Countfire and Monco are built for electrical; Beam AI lists instant takeoffs for HVAC, plumbing and steel.
Check where the quantities go. Does it feed your estimating system, as Togal.AI did for Stevens Construction, or hand you a spreadsheet to re-key?
Decide who does QA. Your estimators, or a vendor review team (Beam AI's done-for-you option), and how long that takes.
Plan takeoff or on-site write-up? Office estimators need takeoff; service techs quoting in the home need voice-to-estimate like BlueBoost at Cornel's Plumbing.
Read the source. Bid-volume and time-saved numbers in these entries are reported by the vendor or the contractor, not audited by us.
Where AI estimates go wrong
Scope gaps. A takeoff counts what's drawn. Anything not on the plans (access, demo, permits, change-order risk) is still on you.
Plan quality. Blurry scans, missing legends or revised sheets can throw off counts. Countfire, for example, says it re-counts revised drawings; check how your tool handles revisions.
No second check. In the sourced entries AI is a first pass with review (Intermountain Electric), not a final number. Keep a person signing off on every price.
Read the source on each entry. If you've got a public estimating write-up we haven't listed,send it in.
FAQ
What is AI estimating for contractors?
Software that reads plans and pulls quantities (takeoffs), or turns a tech's spoken notes into a written estimate, so an estimator reviews and prices instead of counting and typing. Entries on this site cover plumbing, electrical, general contracting and roofing.
Can AI do a full takeoff on its own?
In the sourced entries it's used as a first pass or with review. Intermountain Electric uses Drawer AI as a first pass, and Beam AI says its done-for-you takeoffs are QA-checked by people before delivery.
Does AI takeoff software work for electrical contractors?
Several tools in this directory are built for it: Drawer AI, Countfire and Monco count electrical symbols and read panel schedules or tender documents, and Quotr.ai counts symbols across plan sets. See the Intermountain Electric, WTC Electric, Bojen Electrical, Rudolf Fritz and RL Electric entries.
How much does AI estimating software cost?
None of the plan takeoff tools in our directory (Beam AI, Togal.AI, Drawer AI, Countfire, Monco, Quotr.ai) list dollar prices in our entries, so ask each vendor for a quote. Roofing measurement tools are different: EagleView and Roofr publish per-report and monthly prices on their own sites (see the table above).
Can I use ChatGPT for estimates?
Some contractors do. Leakbusters Roofing built a custom GPT for roof-repair estimates, and remodelers in this directory use ChatGPT to write scopes of work and estimating formulas. You still own the numbers, so check every line.
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