The all-trades operating system for general contractors

The all-trades command center for general contractors

Run every trade and subcontractor from one board — crew time to payroll, change orders signed in the field, progress billing and live job margin, all the way from the jobsite to the ledger.

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✔ Offline-first — works with zero signal ✔ GPS-geofenced crew time ✔ All trades, one dashboard

Bid to closeout

The whole job, one system

Everything a GC juggles across trades, subs and the office — connected end to end so nothing falls through the cracks.

Estimate / bid→Award & schedule→ Crews & subs→Change orders→ Progress billing→Closeout

Every trade & sub, one board

Assign crews and subcontractors across all trades from a single dispatch board. Certs, tickets and expiries tracked per worker so no one works on site with an expired ticket.

Geofenced crew time → payroll

Crews clock in by job and cost code; GPS blocks off-site punches. Hours roll straight into payroll and job costing — no paper timecards.

Work & material orders

Field crews raise work orders and material requests with zero prices on their screen. The office prices them, converts to invoices and POs, and auto-books the expense.

Change orders that stick

Capture, price and get change orders signed before out-of-scope hours are spent — tied straight to the invoice. Stop eating extras.

Live job costing & margins

Labour, materials and subs roll up to real-time budget vs. actual per project, with margin alerts before you blow the number.

Safety, submittals & closeout

Toolbox talks, FLHAs, permits, submittals, punch lists and warranty — signed on site and filed as printable records. Your liability paper trail, digital.

Why GCs run Seastack

One login instead of six tools

Estimating, crew time, subs, safety, change orders, progress billing and job costing in a single app — no copying numbers between tools.
Field crews and subs see clean tasks and safety — never your rates, costs, or margins.
Manage every trade in one account with the General Contractor plan — plumbing, electrical, framing, mechanical, concrete and more.
Works on any phone as an installable app, offline-first — no hardware to buy.
Start free on Solo; step up to Single trade, then General Contractor as you scale.

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See it in action

One project, two views — crew and command center

Crews get a big-button app that works with no signal. You get a live command center: every project, every trade, progress and margin at a glance.

💻 Your command center

seastackbook.com/app

General Contractor · all projects

Riverside Tower · Framing62% complete

Bayview Retail · Electrical rough-in96% budget

CO-318 · Unit 4 core drillapproved

Draw #4 · Progress invoiceunpaid

$248,900

Billed this month

7 subs · 14 crew

On site today

Every project, trade and draw in one place — with live budget vs. actual the moment a shift is logged.

📱 On the jobsite

Glove-friendly and offline-first. Every hour is GPS-verified and cost-coded to the right project.

Questions

General Contractor software — FAQ

Can I run every trade and subcontractor from one account?

Yes. The General Contractor plan covers all trades and every certificate in one account, with unlimited team users and staff logins — no separate app per trade.

Does it handle change orders and progress billing?

Yes. Price and sign change orders in the field, bill progress draws against the contract, and watch live job margin as hours are logged.

Can I see live job cost and margin across projects?

Yes. Crew time flows straight to job costing, so you see labour cost and margin per project in real time — before a job slips.

Do my subs and crew see pricing or margin?

No. Rates, job costs and margins stay in the office. Crews and subs see their tasks, time and schedule — never your numbers.