Stop juggling spreadsheets, texts, and paper estimates. Senku gives you everything to run your contracting business — from first quote to final payment.
Free plan available — no credit card needed
Each estimate generates a shareable portal where customers can view the full breakdown, track progress in real-time, approve change orders, sign digitally, and pay online. No app download needed — it just works.
Materials, labor, project items, tiers, change orders — all in one clean estimate that impresses customers.
Describe the job and AI builds your estimate. Auto-reply to customer texts. Scan receipts automatically.
Stripe, Venmo, Zelle, check, and cash. Customers pay right from the portal — no chasing invoices.
Add your line items, materials, and labor. AI can generate them from a job description.
Share a link to their personalized portal. They can view, approve, sign, and pay online.
Monitor progress, upload photos, and collect payments. Revenue dashboards keep you informed.
Senku is a product of SJ Tech Solutions. We build it because we run trade businesses ourselves, and the tools we kept reaching for were either too generic, too expensive, or too clunky to actually use on a job site.
Every feature in Senku exists because we needed it — fast itemized estimates, a customer portal that doesn't require an account, online payments that go straight to our own bank, and a revenue page that finally answers “how much did I actually make this month?”
We're a small team. You can reach us anytime at hello@senkulab.com.
Senku is a complete estimate, payment, and project-management platform built specifically for trade contractors — painters, landscapers, roofers, HVAC, electricians, remodelers, and similar trades.
Solo contractors and small crews who want professional estimates, online payments, a customer portal, and revenue tracking without juggling five different tools.
Under five minutes. Sign up, type a job description (or use the AI line-item generator), and email or text the customer a link to a clean, branded estimate.
Yes — connect your own Stripe account and customers can pay with a card straight from the estimate. You can also record cash, check, Zelle, and Venmo manually.
Yes. The Free plan covers basic estimating with no credit card required. Paid plans start at $15/mo for additional features like the customer portal, AI estimates, and revenue analytics.
No. Senku runs entirely in your browser on desktop or mobile. You can also add it to your phone home screen for an app-like experience.
Senku is a product of SJ Tech Solutions. We run trade businesses ourselves and built Senku to solve the problems we kept hitting in the field.
Join hundreds of contractors who save hours every week with Senku.