SDSI
SDSI
Since 1984, SDSI has delivered the industry’s most reliable construction estimating software and custom Windows solutions to contractors who demand accuracy and speed.
Trusted by 1,200+ construction professionals
Delivering trusted software since 1984
Small and mid-sized firms nationwide
Consistent, defensible estimates
From takeoff to proposal
Main Bid Workspace — Real-time calculations, full audit trail
No bloated enterprise complexity. Just powerful, intuitive tools that estimators actually enjoy using — every single day.
We don’t just sell software. We partner with contractors to deliver estimating tools that are accurate, fast, and genuinely easy to master.
Built-in error checking, smart assemblies, and automatic calculations give you complete confidence in every line item.
Estimators report cutting bid time dramatically while producing richer, more detailed proposals than ever before.
When you call, you reach a knowledgeable expert — often someone who’s been with SDSI for 15+ years. No ticket queues.
“Rapid Estimator paid for itself within the first three bids. Our estimating accuracy improved dramatically and we’re winning more work with tighter margins.”
“We’ve used SDSI since 1997. The consistency and speed of the software is unmatched. When we need custom reports, their team builds exactly what we ask for.”
“After switching from spreadsheets and another package, our estimators went from dreading bid days to finishing early. The support is simply the best in the industry.”
Join hundreds of contractors who trust SDSI every day to deliver accurate, profitable bids.
NO OBLIGATION • TYPICALLY SCHEDULED WITHIN 48 HOURS