Best AI for Construction Estimation 2026
AI-powered estimating tools are revolutionizing material takeoffs and cost estimation. We tested the top solutions to find which delivers the best accuracy and time savings.
ContractorCounter
ContractorCounter is browser-based construction takeoff and PDF markup software with an AI assistant that runs takeoffs as visible, checkable markups. Calibrate scale once, then measure lengths, areas, and volumes, count fixtures symbol by symbol, and mark up sheets with clouds, callouts, and text. Measurements flow into a live bill of quantities you can price and export. Runs on Mac, Windows, and iPad with nothing to install. Includes a genuinely free, no-signup PDF markup tool.
All Material Estimation Tools Compared
ContractorCounter
ContractorCounter is browser-based construction takeoff and PDF markup software with an AI assistant that runs takeoffs as visible, checkable markups. Calibrate scale once, then measure lengths, areas, and volumes, count fixtures symbol by symbol, and mark up sheets with clouds, callouts, and text. Measurements flow into a live bill of quantities you can price and export. Runs on Mac, Windows, and iPad with nothing to install. Includes a genuinely free, no-signup PDF markup tool.
Quotr.ai
Quotr.ai is an AI-powered construction technology platform designed to modernize the pre-construction workflow for subcontractors, general contractors, and developers. It serves as an all-in-one workspace that replaces manual spreadsheets and fragmented documents with a streamlined, automated system, transforming static construction drawings into actionable data so firms can move from uncertainty to execution in minutes.
Size The Job
SizeTheJob builds fast, accurate construction-materials calculators that answer one question before you spend money: how much do I need? Free, no sign-up, and every page shows the math. Every calculator runs on one shared, unit-tested math engine. For bulk materials it computes the volume of your area (length × width × depth, with shape options for circles, triangles, and L-shapes), converts to cubic yards (1 yd³ = 27 ft³), and applies the material’s density to estimate tons and bags.
SlabCalc
Free browser concrete calculator: volume, bag counts (40/50/60/80 lb), weight and installed cost for slabs, cylinders, curbs and stairs, imperial or metric, with an adjustable waste factor. No account. Caveat you should weigh before listing it: the calculator itself is deterministic, not AI - only our companion crack analyzer at /analyze is. And our cost figures come from state DOT bid records reprojected onto residential jobs, not contractor quotes, so the ranges are wide.
PlanSwift
Construction takeoff and estimating software that uses AI to automate material quantity calculations.
Pros
- Industry standard
- Comprehensive
- Good support
Cons
- Desktop only
- Dated interface
CostCertified
AI-powered construction cost estimation and bidding platform. Generates accurate cost estimates and helps contractors win more bids with data-driven pricing. Now sold as Bolster, following the CostCertified rebrand.
Pros
- Fast takeoffs
- Good cost data
- Client proposals
Cons
- Learning curve
- Limited integrations
PreconAI
AI-powered preconstruction and estimating platform that learns from historical project data.
Pros
- AI-powered accuracy
- Learning from history
- Time-saving
Cons
- Requires training data
- Mid-range pricing
STACK
Cloud-based takeoff and estimating software with AI-powered measurement and material calculation.
Pros
- Free tier available
- Modern interface
- Mobile-friendly
Cons
- Limited in free tier
- Fewer integrations
Proest
Cloud-based construction estimating with AI-assisted cost databases and bid management. Acquired by Autodesk in 2022 and sold as part of the Autodesk construction portfolio.
Pros
- Cloud-based
- Team collaboration
- Good databases
Cons
- Subscription model
- Learning curve
Naska.AI
AI-powered quantity takeoff and estimating. Automatically extracts quantities from drawings and generates accurate material estimates in minutes.
Pros
- Free tier
- Fast results
- Easy to use
Cons
- Limited features in free tier
- Newer platform