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HCSS HeavyBid vs SitesAI Estimate

Different steps of a civil bid. HeavyBid is estimating and bidding software for self-performing civil and infrastructure contractors, sold by custom quote. SitesAI Estimate is a browser-based earthworks takeoff tool that calculates cut and fill from PDF, DWG or DXF plans, with published per-user prices and an AI plan. Not like-for-like. Desk research from vendor pages read Oct 26, 2026; not tested, no winner.

DESK RESEARCH, NOT TESTED. Compiled from vendors' public websites (accessed Oct 26, 2026). Vendor claims are not verified by Means & Methods Lab. No scores or rankings.

In short: HCSS HeavyBid (Heavy civil estimating; no public prices (quote / sales)) vs SitesAI Estimate (Earthwork takeoff; vendor publishes prices). Facts last checked Oct 26, 2026. No winner declared; not tested.

Side by side

HCSS HeavyBid vs SitesAI Estimate: vendor-published facts side by side
Sheet rowHCSS HeavyBidSitesAI Estimate
CategoryHeavy civil estimatingEarthwork takeoff
AI role (our label)AI features added to established productAI features added to established product
What it doesEstimating and bidding software for civil and infrastructure contractors (vendor: trusted since 1986). Shared templates, crews, and cost data, automated error alerts, what-if analysis, historical data, custom proposals, and export to DOT or digital submission. Available as HeavyBid Desktop (vendor cites integrations to 30+ accounting and DOT systems) and a web-based version. Re-checked Oct 19, 2026: the product page says HeavyBid comes in three levels sized from small contractors bidding about $100,000+ projects to large contractors bidding in the billions; Desktop keeps advanced risk tools and native interfaces to 30+ accounting and DOT systems (Vista, QuickBooks, Sage 300 named); the web-based version is described as browser-based with Flashback estimate history and system-wide libraries, and customers can hold both license types with codebooks carried over. HCSS's AI page (read Oct 19, 2026) says the HCSS AI assistant, included in current subscriptions, connects across HeavyBid, HeavyJob, HCSS Safety and HCSS Plans, and in HeavyBid summarizes estimate audit history so you can see what changed and when. An Estimate Builder agent that drafts an estimate from an imported pay-item list using your estimate history and HCSS libraries is marked Coming Fall 2026 (beta, then a paid upgrade). Because this AI is added to the established product, we now tag HeavyBid AI features added (it was Not AI-first until Oct 19, 2026). Re-checked Oct 20, 2026: the product page still describes HeavyBid Desktop with native interfaces to 30+ back-office systems (Vista, QuickBooks and Sage 300 named) and the web-based version, with Desktop and web licenses usable together; HCSS's AI page still lists HeavyBid estimate audit summaries in the included assistant and the Estimate Builder agent as coming in beta, then a paid upgrade, and now also lists HCSS AI Core as Coming Fall 2026. Re-checked Oct 21, 2026: the HeavyBid page's FAQ says buyers get a dedicated project coordinator for implementation (setup typically 1-3 days), that cities, engineering firms and public utilities also use HeavyBid for capital budget estimates, and that it interfaces with RSMeans and Richardson pricing data (vendor statements); its implementation-time percentage and customer quotes are not used. Re-checked Oct 22, 2026: the HCSS AI page says the AI assistant is included in the subscription and lists HCSS AI Core and HCSS AI Studio as coming fall 2026, with AI Studio described as where agents are configured in plain language; the first pre-built agents it names are a Production Analyst, an Estimate Builder that imports pay items and drafts an estimate from your own history and libraries, and a Field Agent for voice daily logs, with an agents beta later this year followed by a paid upgrade. The HeavyBid FAQ says web-based licenses can be added alongside Desktop licenses. Re-checked Oct 23, 2026: product page unchanged in substance (HeavyBid Desktop with native interfaces to 30+ back-office systems such as Vista, QuickBooks and Sage 300, and a web-based HeavyBid); the HCSS AI page still describes AI that works across estimating, field, fleet and safety data. Re-checked Oct 24, 2026: product page unchanged in substance (HeavyBid Desktop with native interfaces to 30+ back-office systems such as Vista, QuickBooks and Sage 300, and a web-based HeavyBid); the HCSS AI page still lists the included assistant (smart search, job data analysis, estimate audit summaries, document Q&A, daily digest summaries) and HCSS AI Core and AI Studio as Coming Fall 2026. Customer counts, ENR and bid-volume figures are vendor claims not used here. Re-checked Oct 25, 2026: unchanged in substance (HeavyBid Desktop with native interfaces to 30+ back-office systems including Vista, QuickBooks and Sage 300; web-based HeavyBid; the HCSS AI page still lists AI Core and AI Studio as Coming Fall 2026). The estimator-count figure is a vendor claim and not used here. Re-checked Oct 26, 2026: the product page is unchanged in substance (HeavyBid Desktop with native interfaces to 30+ back-office systems including Vista, QuickBooks and Sage 300, plus web-based HeavyBid, and both license types usable together); HCSS's AI page still lists the AI assistant and the Estimate Builder agent, with HCSS AI Core and HCSS AI Studio marked Coming Fall 2026. The bid-cycle percentage remains a vendor claim not used here.Browser-based earthworks takeoff and estimating that calculates cut and fill from PDF, DWG or DXF plans, with an AI auto-takeoff plan. You load a PDF, DWG or DXF, calibrate scale, trace work areas and set existing/design levels; it calculates cut and fill, shows 3D terrain for levels and batters, and exports quantities to Excel or PDF. The AI plan adds AI auto-takeoff (draft for human review) and an MCP connector so Claude, Codex or ChatGPT can drive the same tools. Runs at takeoff.sitesai.net with Google or Microsoft sign-in. Re-checked Oct 19, 2026: the estimate page still lists Free (markup and 3D terrain on one sheet, no cut/fill volumes), Pro and AI plans, and states a 30-day money-back guarantee on paid plans and a 14-day free trial of the AI plan with no card (one per account). Re-checked Oct 21, 2026: the estimate page is unchanged in substance and adds that AI auto-takeoff proposes geometry for review and is metered as credits, with credits included each month on the AI plan, and that the MCP connector has 22 tools and is listed in the official MCP Registry as net.sitesai/estimate (vendor statements). Re-checked Oct 22, 2026: the estimate page is unchanged in substance (PDF, DWG and DXF cut and fill takeoff with 3D terrain; AI auto-takeoff proposes geometry for review and is metered as credits included monthly on the AI plan; MCP connector with 22 tools listed in the official MCP Registry). Re-checked Oct 23, 2026: the estimate page is unchanged in substance (PDF, DWG and DXF cut and fill takeoff with 3D terrain; existing surface from spot levels, contours or a survey DXF against design platform levels and batters, with bulking and compaction added by the user; AI auto-takeoff proposes geometry for review and is metered as credits; MCP connector with 22 tools). Re-checked Oct 24, 2026: the estimate page is unchanged in substance (PDF, DWG and DXF cut and fill takeoff with 3D terrain; existing surface from spot levels, contours or a survey DXF against design platform levels and batters, with bulking and compaction added by the user; AI auto-takeoff drafts geometry for review; MCP connector with 22 tools listed in the official MCP Registry as net.sitesai/estimate). Re-checked Oct 25, 2026: unchanged in substance (PDF, DWG and DXF takeoff with a 3D view; auto-takeoff and an MCP connector on the AI plan). The same pricing page also lists the separate SitesAI App (first 10 licences free, then $5 per licence a month, AI add-on $38 a month). Re-checked Oct 26, 2026: the estimate page is unchanged in substance (AI auto-takeoff proposes boundaries, areas and counts as a first pass and nothing is applied until you accept it; runs are metered as credits with credits included each month; MCP connector for Claude, Codex and ChatGPT on the AI plan).
Who it's forSelf-performing civil and infrastructure contractors' estimating teams.Civil and earthmoving contractors pricing cut and fill from plans.
Pricing (as publicly stated)No public prices (checked Oct 16, 2026; unchanged Oct 19, 2026): the HeavyBid page's "Get pricing" link goes to HCSS's pricing page, a "Start here for a custom quote" form ("Share your needs and we'll build the right quote"); no figures. Confirm current pricing with the vendor. Re-checked Oct 20, 2026: the pricing page is still a "Start here for a custom quote" form with no figures. Re-checked Oct 21, 2026: unchanged; the pricing page is still a "Start here for a custom quote" form with no figures. Re-checked Oct 22, 2026: still no public prices; the pricing page is a custom-quote form. Re-checked Oct 23, 2026: unchanged; the pricing page is still a "Start here for a custom quote" form with no figures. Re-checked Oct 24, 2026: unchanged; the pricing page is still a "Start here for a custom quote" form with no figures. Re-checked Oct 25, 2026: unchanged (the pricing page is a Start here for a custom quote form; no prices). Re-checked Oct 26, 2026: unchanged (the pricing page is still a Start here for a custom quote form; no prices).Free: markup and 3D terrain on one sheet (no cut/fill volume figures). Pro: $39/user/month or $390/year (volumes, unlimited sheets, Excel/PDF export, cloud sync). AI: $99/user/month or $990/year (adds AI auto-takeoff and MCP connector; 14-day free trial of AI plan, no card, one per account). USD. (Checked Oct 15, 2026; unchanged Oct 19, 2026: Free US$0, Pro US$39/user/month or US$390/year, AI US$99/user/month or US$990/year.) Re-checked Oct 21, 2026: unchanged (Free US$0 on one sheet without volume figures; Pro US$39 per user per month or US$390 per year; AI US$99 per user per month or US$990 per year with a 14-day trial, no card; 30-day money-back guarantee on paid plans). Re-checked Oct 22, 2026: unchanged (Free US$0 on one sheet without volume figures; Pro US$39 per user per month or US$390 per year; AI US$99 per user per month or US$990 per year with a 14-day trial, no card, one per account; 30-day money-back guarantee on paid plans). Re-checked Oct 23, 2026: unchanged (Free US$0 on one sheet without volume figures; Pro US$39 per user per month or US$390 per year; AI US$99 per user per month or US$990 per year with a 14-day trial, no card, one per account; 30-day money-back guarantee on paid plans). Re-checked Oct 24, 2026: unchanged (Free US$0 on one sheet without volume figures; Pro US$39 per user per month or US$390 per year; AI US$99 per user per month or US$990 per year with a 14-day trial, no card, one per account; 30-day money-back guarantee on paid plans). Re-checked Oct 25, 2026: no price change (Free for markup and the 3D view; Pro US$39 per user a month or $390 a year; AI US$99 per user a month or $990 a year with a 14-day trial and no card; 30-day money-back guarantee). Re-checked Oct 26, 2026: unchanged (Free US$0; Pro US$39 per user per month or US$390 per year; AI US$99 per user per month or US$990 per year with a 14-day trial, no card; 30-day money-back guarantee on paid plans).
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Sources

Facts last checked: Oct 26, 2026. Prices change; check the vendor page before relying on them.

Where the vendor descriptions differ

  • What each does (vendor pages): HCSS describes HeavyBid as civil construction estimating and bidding software, trusted since 1986, sized from small contractors bidding about $100,000+ projects to large contractors bidding in the billions. SitesAI Estimate has you load a PDF, DWG or DXF, calibrate scale, trace work areas and set existing and design levels; it calculates cut and fill, shows a 3D terrain view and exports quantities to Excel or PDF.
  • Where they fit: SitesAI Estimate produces earthwork quantities; HeavyBid builds the priced estimate and bid around scopes, crews and cost data. A contractor could use a takeoff tool like SitesAI Estimate to feed quantities into an estimate, but neither vendor page describes a direct link between the two.
  • How they run: HeavyBid comes as HeavyBid Desktop, with native interfaces to 30+ back-office systems including Vista, QuickBooks and Sage 300, and as a web-based version; customers can hold both. SitesAI Estimate runs in the browser with Google or Microsoft sign-in, and Pro adds cloud sync through Google Drive or OneDrive.
  • AI: HCSS says its AI assistant is included in current subscriptions, lists an Estimate Builder agent that drafts an estimate from an imported pay-item list using your estimate history and HCSS libraries, and marks HCSS AI Core and AI Studio as Coming Fall 2026. SitesAI's AI plan adds AI auto-takeoff, which proposes boundaries, areas and counts for you to review before anything is applied, and an MCP connector so Claude, Codex or ChatGPT can drive the same tools. Both are tagged AI features added to established product.
  • Volumes: SitesAI says its volumes are geometric, so you add your own bulking and compaction allowances.
  • Pricing (checked Oct 26, 2026): HeavyBid publishes no prices; HCSS's pricing page is a custom-quote form. SitesAI Estimate lists Free US$0 (markup and 3D view, no cut and fill volumes), Pro US$39 per user per month or US$390 per year, and AI US$99 per user per month or US$990 per year with a 14-day trial and no card; paid plans carry a 30-day money-back guarantee.
  • Not used here: HCSS's bid-cycle percentage and customer material (vendor content).

Paraphrased from the sources listed above. Vendor claims are reported as claims.

What users say

The facts above come from vendor websites. Whether either tool is any good for your work is something only people who use them can say. These are member reviews, all ratings shown, never edited or removed for being negative.

Used either of these? Share your take

Good or bad, an honest review from an estimator, PM or super helps the next team more than another vendor demo. You post under a handle; your email is never shown.

Questions to ask in your review

  • Whether you need a full civil estimating and bidding system (HeavyBid) or a quick earthwork quantity takeoff (SitesAI Estimate), or both
  • How SitesAI's cut and fill figures compare with your current takeoff method on your own plans
  • What HeavyBid costs for your team and when HCSS's Fall 2026 AI features arrive
  • What did you use it for, on what kind of work and project size?
  • How long did setup and training take, and who on your team did it?
  • What does it cost you in practice, compared with what the sales call said?

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