CSI-organized cost estimates with a validated markup waterfall. Upload plans, build line items, generate PDF reports — all from your browser.
One missed marine-clay pocket costs $100K+. One won bid pays for a decade of DirtBid.
Check one parcel before you buy or bid. No subscription.
Feasibility budgets at ±15% — soil risks priced in.
Bid-ready estimates at ±5% with full waterfall control.
Your bid history calibrated into the platform.
30-day free trial includes full access to everything. No credit card required.
Upload your site plans as PDF or images. AI automatically identifies grading, paving, and utility quantities.
Build line items from the curated Virginia cost library — regionally priced, organized by CSI division — with AI lookup for anything else. Adjust quantities, override costs, add notes.
Generate professional PDF reports with your markup waterfall. One-click export — ready for your client in minutes.
Not adapted from general construction tools — designed from scratch for earthwork, utilities, and paving.
Drop a pin — official USDA soil data flags marine clay, muck, karst, and shallow rock BEFORE you price the dirt
Base → Mob 6% → Contingency 8% → OH 15% → Profit 10% → Bond + Insurance
8 Virginia regions and all 133 counties & cities — every price adjusted by local cost multipliers
Describe the job in plain English — get a complete, priced scope with missing-item warnings. Upload plans for AI takeoff.
Branded reports with division breakdown, markup summary, and a one-page Soil Risk Summary
Pipe without manholes? Asphalt without base? The 7-category estimator checklist catches it before you bid
Every number in DirtBid has a source you can name.
Parcel analyses query the US government’s SSURGO database live — the same soil data geotechnical engineers start from. Marine clay, muck, karst, and shallow rock get flagged before you price a yard of dirt.
Every Virginia county and city profiled: dominant soils, risk scores, cost multipliers, and the estimator notes that usually take a career to learn — from Fairfax marine clay to Dismal Swamp muck.
The markup sequence — mobilization, contingency, overhead, profit, bond, insurance — compounds in the industry-standard order, computed in audited decimal math. Every intermediate value is stored, so any bid can be defended line by line.
Start your 30-day free trial. No credit card. No setup fees. Full access to all features.
Start Free Trial — 30 Days