Who it's for
Best AI for subcontractors
Bottom line
Field24 is our pick for subcontractors: forward the invitation or text the plans, name your scope, and get back a measured, priced takeoff and a signable proposal, without installing software or tracing a sheet.
On this page
The bid-volume problem
Win rates depend on how many jobs you can price. Every bid you pass on for lack of time is one you cannot win. AI takeoff turns the evening of tracing into a review of marked sheets.
Your scope, not the whole set
Tell Field24 your trade and it measures just that scope across the set, priced with Home Depot for residential work or market rates for commercial, labor adjusted to your ZIP, and your own price book first.
How the options compare
| Field24 | Togal.AI | PlanSwift | ChatGPT | |
|---|---|---|---|---|
| Measures the plans | YesExact lengths from the PDF's vector layer and a wall detector for scans, every quantity marked on the drawing with assumptions highlighted for your review. | YesDetects walls, floors, ceilings, doors and windows and computes areas and lengths. | YesManual point-and-click, with AI add-ons on higher tiers. | NoReads and describes a page; no measurement tools and no marks tying a number to the drawing. |
| Prices for your area | YesHome Depot for residential, market rates for commercial, labor by ZIP, your price book first. | NoQuantities are exported for pricing elsewhere. | NoYour own assemblies; no localized price feed. | NoPrices come from memory or a web search, not a store. |
| Takes bids from your bid board | YesBuildingConnected, Merx and PlanHub invitations, or a forwarded email. | PartlyImports drawings from Procore and Bluebeam; no bid-board intake documented. | NoPlans are opened from your computer. | NoYou upload the files by hand. |
| Writes the proposal | YesPriced estimate, signable proposal, invoice and change order. | NoTakeoff quantities and Excel export. | PartlyEstimate reports; proposals are built elsewhere. | PartlyDrafts the words; you supply the numbers. |
| Works from your phone | YesWhatsApp, web, mobile and email. | NoWeb app. | NoWindows only. | YesWeb, desktop and mobile apps. |
Common questions
Can AI take off only my trade?
Yes. Field24 asks whether you want all trades or a scope, then measures and prices just that scope.
Do I need to learn new software?
No. Field24 works over WhatsApp, email, the web and the mobile app.
Sources
Keep reading
Last reviewed November 9, 2026. Cite as: Best AI for Construction, “Best AI for subcontractors,” https://best-ai-for-construction.com/for-subcontractors/