Contractor Margin Guard

Contractor Margin Guard helps solo contractors and small construction businesses track whether a job is still profitable after the estimate is signed.

Your estimate might have looked profitable on day one. Materials cost more, labor runs long, extra work appears, and change orders get missed. Compare your original estimate against real costs and current forecasts before the job ends.

WHAT IT DOES

• Track estimate vs actual costs

• Monitor projected job margin and profit leakage

• Track approved and pending change orders

• Compare estimated and real costs by category

• Review conservative, base, and aggressive scenarios

• Capture job closeout lessons for the next estimate

• Create a client-facing proposal that keeps internal profit private

• Export JSON backups and CSV project summaries

WHY IT IS DIFFERENT

No monthly subscription, account, cloud database, or runtime API. Your buyer package runs locally in Chrome or Edge. User data is stored in browser storage on your device; export regular JSON backups because clearing browser storage can remove local data.

BUYER WORKFLOW

1. Download the ZIP.

2. Extract it.

3. Open START-HERE.html.

4. Click Launch the app.

No installation, account, subscription, or cloud service is required.

WHO IT IS FOR

Solo contractors, remodelers, painters, fence and deck builders, landscapers, handymen, and small owner-operated crews who want a clear margin check.

DISCLAIMER

Contractor Margin Guard is a planning and estimating tool. It does not provide accounting, tax, legal, payroll, payment processing, guaranteed pricing, or guaranteed profitability advice. Users remain responsible for their own project pricing, contracts, taxes, legal obligations, and business decisions.