“I used to spend 2 hours on each estimate. Now it takes me 10 minutes. GrowZbl paid for itself in the first week.”
Marcus Rivera
Apex Roofing — Austin, TX
12 years in business
Professional Estimating Software for Contractors
Build Smarter.
Profit More.
Create accurate estimates in minutes, send branded PDFs to clients, collect digital signatures, and automate follow-ups. Know your numbers. Win more jobs.
No credit card required • Cancel anytime
Early Bird Pricing is Over
Early bird spots have been claimed. New subscribers join at $100/mo — unlimited estimates, invoices, clients, and team members.
2 min
Average Estimate Time
98%
Win Rate Increase
24/7
Cloud Access
$100/mo
All Features Included
app.growzbl.com/dashboard
Good morning, Marcus
Apex Roofing — Austin, TX
Active Estimates
18
+4 this weekRevenue This Month
$42,850
+22% vs last monthPending Signatures
5
3 viewedJobs Scheduled
12
Next: Tomorrow 8amRecent Estimates
David Thompson — Roof Replacement
$14,200Signed
Summit Concrete — Driveway Pour
$8,750Viewed
Jennifer Walsh — Shingle Repair
$3,400Sent
Park Avenue Office — Commercial Flat Roof
$28,500Draft
Estimate Builder
Build Estimates in Minutes, Not Hours
Select from your saved templates, adjust quantities, apply markup, and generate a professional estimate — all in under 2 minutes.
- Drag-and-drop line items from templates
- Auto-calculate with markup and tax
- Add scope of work with photos per service
- Duplicate and revise past estimates
app.growzbl.com/estimates/EST-1047
Roof Replacement
EST-1047 • David Thompson
Item
Rate
Markup
Total
Tear-off existing shingles
$85
20%
$2,448.00
Install GAF Timberline HDZ
$195
25%
$5,850.00
Replace damaged decking
$120
20%
$864.00
Ridge vent installation
$450
15%
$517.50
Subtotal$9,679.50
Tax (8.25%)$798.56
Total$10,478.06
Branded Estimates
Send Branded Estimates Clients Love
Your estimates go out as polished, branded PDFs with your logo, colors, and terms. Clients view, approve, and sign — all online.
- Custom branding with your logo and business info
- Professional PDF download for clients
- Client portal with online viewing and signing
- Real-time status tracking (sent → viewed → signed)
growzbl.com/estimate/abc-1047
AR
Apex Roofing
1200 Commerce Dr, Austin TX 78701
Estimate
Roof Replacement
EST-1047 • March 8, 2026
Prepared For
David Thompson
742 Oak Valley Dr, Austin TX
Tear-off existing shingles$2,448.00
Install GAF Timberline HDZ$5,850.00
Replace damaged decking$864.00
Ridge vent installation$517.50
Total$10,478.06
Sign & Accept
Download PDF
Powered by GrowZbl
Scheduling
Schedule Jobs. Stay Organized.
Drag signed estimates onto your calendar, assign crew members, set arrival windows, and sync with Google Calendar. Never double-book again.
- Weekly and monthly calendar views
- Drag-and-drop job scheduling
- Google Calendar two-way sync
- Crew assignment and arrival windows
app.growzbl.com/calendar
March 2026
MonthWeek
Mon
Tue
Wed
Thu
Fri
10
Thompson Roof
Site visit 2pm
11
Thompson Install
12
Walsh Repair
Estimate 10am
13
Summit Concrete
14
No jobs
Overhead Calculator
Know Your True Hourly Rate
Most contractors undercharge because they don't factor in overhead. Input your real expenses, set your profit margin, and know exactly what to charge per hour.
- Track insurance, fuel, tools, taxes, and more
- Set your target profit margin
- Calculate your break-even hourly rate
- Never underbid a job again
app.growzbl.com/overhead
Your True Hourly Rate
$78.25/hr
Monthly
975
hours
Annual Rev
$73,728
Profit
20%
Monthly Overhead
Vehicle Insurance$380
General Liability$520
Fuel & Transportation$640
Tools & Equipment$310
Estimated Taxes$1,200
Total Overhead$3,050/mo
Invoicing
Turn Signed Estimates into Invoices Instantly
Once a client signs, generate an invoice with one click. Track payments, send reminders, and accept online payments via Stripe.
- One-click invoice from signed estimate
- Accept online payments via Stripe
- Automatic payment reminders
- Partial payment tracking
app.growzbl.com/invoices/INV-0083
Invoice #INV-0083
From Estimate EST-1047
Bill To
David Thompson
742 Oak Valley Dr, Austin TX
Amount Due
$5,478.06
Payment History
Stripe payment received
$5,000.00
Mar 3, 2026
Remaining balance$5,478.06
Send Payment Reminder
E-Signatures
Get Estimates Signed in Hours, Not Days
Clients review your estimate online and sign with a finger or mouse. No printing, no scanning, no chasing paper.
- Legally binding e-signatures
- Sign on any device — phone, tablet, or desktop
- Instant notification when client signs
- Signed PDF stored permanently
growzbl.com/estimate/sign
Sign Estimate
From Apex Roofing • EST-1047
Estimate Total$10,478.06
I agree to the terms and scope of work
David Thompson
Estimate Accepted
Signed on Mar 8, 2026 at 3:42 PM
See It In Action
Watch How It
Works in 60 Seconds
See how easy it is to create estimates, send them to clients, and close deals.
What Contractors Say
Trusted by Contractors
Who Price to Win
“The overhead calculator showed me I was undercharging by 30% on every job. That one feature changed my entire business.”
Sarah Chen
Chen Landscaping — Portland, OR
200+ estimates sent
“Clients love the digital signatures. I went from waiting days for a response to getting signed estimates back the same afternoon.”
James Mitchell
Mitchell Painting Co. — Charlotte, NC
8 years in business
FAQ
Frequently Asked
Questions
How fast can I create an estimate?
Most contractors create their first estimate in under 5 minutes. Once you set up templates for your common services, new estimates take about 2 minutes.
Can my clients sign estimates online?
Yes. When you send an estimate, your client receives a link to review and e-sign it from any device — phone, tablet, or computer. You get notified the moment they sign.
What does the overhead calculator do?
It factors in all your monthly business expenses — insurance, fuel, taxes, tools, office rent — plus your target profit margin, to calculate your true billable hourly rate. So you never underbid a job again.
Does GrowZbl work on my phone?
Yes. GrowZbl is a cloud-based web app that works on any device with a browser. Create estimates, manage your calendar, and track invoices from anywhere.
How much does GrowZbl cost?
$100/month for everything — unlimited estimates, invoices, clients, templates, and team members. No tiers, no hidden fees, no per-user charges.
Can I generate invoices from signed estimates?
Absolutely. Once a client signs your estimate, you can generate a matching invoice with one click and accept online payments via Stripe. GrowZbl also sends automatic payment reminders.
Learn More
Explore
GrowZbl
Features
Discover all the tools built to help you estimate faster, price smarter, and close more deals.
Learn morePricing
One simple plan with everything included. No tiers, no hidden fees, no surprises.
Learn moreHow It Works
See the step-by-step flow from building an estimate to getting it signed — in minutes.
Learn more