Shipping in production
ProJobCalc
Clear numbers. Faster estimates. Better decisions.
The short of it
- Audience
- Roofers, painters, HVAC teams, trades, and owner-operators sending quotes every week.
- Domain
- projobcalc.com
The problem
Contractors quote jobs in spreadsheets and guesswork. Margin slips. ProJobCalc gives them a multi-step estimator with real labor, materials, markup, tax, and margin — plus AI-written proposals that actually read like their voice.
What I built
- Multi-step job estimation — labor, materials, markup, tax, margin
- Pro subscription flow with Stripe checkout and customer portal
- AI-written bid proposal generator (paid feature, Claude Sonnet)
- PDF proposal export + branded email delivery
- Admin analytics view for internal reporting
Stack
Next.js 14 App RouterStripe subscriptions (Pro tier, $19/mo)Claude Sonnet 4.6 via @anthropic-ai/sdk (bid proposal generation)Prisma + PostgresServer-side PDF export + email delivery via ResendAdmin analytics viewClean Estimator brand system (graphite / electric blue / success green)
What’s next
Continue Clean Estimator brand pass across all surfaces — header chrome and display font just landed; next is the dashboard polish and the proposal PDF typography.
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Every project on the showroom is live, in beta, or at client scale — no concept pages.