Paradise Estimating — Commercial Construction Estimation Engine
The Problem & Bottlenecks
System Bottlenecks & Technical Friction
Commercial general contractors and subcontractors were submitting estimating requests through disjointed channels (Dropbox, email, text), leading to lost plan addenda, missed bid submission cutoffs, and administrative friction in collecting deposit payments.
Our Engineering Approach
Architecture Design & Implementation
We engineered a unified client portal for Paradise Estimating featuring instant multi-gigabyte blueprint set uploads, web-based drawing previews via PDF.js, automated CSI MasterFormat trade selection, and integrated Stripe payment processing for milestone-based estimate delivery.
Technical Architecture
System Subsystem Breakdown.
Direct-to-S3 multi-part file upload pipeline handling 500MB+ architectural PDF drawing sets
In-browser PDF plan viewer allowing clients to flag specific sheets and scopes before takeoff
Automated estimating quote generator calculating trade fees based on square footage and division count
Stripe payment gateway supporting upfront retainer deposits and milestone delivery releases
Automated email and SMS notification engine updating contractors as their bid package advances
MongoDB database indexing project scopes, addendum logs, and historical unit-cost records
Engagement Roadmap
Engineering Delivery Schedule.
Estimating workflow discovery, CSI trade classification mapping, and security requirements
High-speed S3 upload pipeline, PDF.js blueprint previewer, and pricing calculator engine
Contractor dashboard, Stripe invoice settlement, and real-time status tracking
Field testing with 20 partner contractors, security audit, and public launch
More Case Studies
Related Production Systems
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