About Praevius | AI Cost Control for Construction Subcontractors
about Praevius, construction cost control company, QS software company, subcontractor software, quantity surveying software
About Praevius: AI Cost Control for Construction Subcontractors
20 years of construction cost management expertise, now powered by AI.
The Story
Praevius (from Latin “praevius” meaning “going before”) was born from a simple observation: construction subcontractors are drowning in spreadsheets while enterprise platforms price them out of modern cost control.
After two decades working as a quantity surveyor across the UK, Australia, and Poland—handling everything from 500K fitouts to 50M commercial developments—the pattern became undeniable. Specialty trade contractors, the backbone of every construction project, were consistently:
- Losing 3-5% margins to poor variation tracking
- Wasting 10+ hours monthly on manual billing cycles
- Discovering cost overruns weeks after they could have acted
- Being priced out of tools designed for general contractors
Praevius is the solution: professional-grade cost control without enterprise complexity. Simple enough to learn in hours, powerful enough to replace spreadsheet chaos.
Why Quantity Surveying Software Needed to Change
Traditional quantity surveying software was designed for enterprise clients with dedicated IT teams and training budgets. That left mid-market contractors with two options: expensive platforms that required weeks of training, or spreadsheets that created more problems than they solved.
The construction industry loses billions annually to:
- Spreadsheet errors - 88% of spreadsheets contain errors (KPMG study)
- Poor cash flow visibility - Only 12% of contractors get paid on time
- Missed variations - Change orders represent 8-14% of project value
- Reactive cost control - Problems discovered weeks after they occurred
Praevius bridges this gap: professional-grade construction cost control software with mid-market pricing and learning curves measured in hours, not weeks.
Who Uses Praevius?
Electrical Contractors
Managing 10-50 concurrent projects with complex variation tracking and progress billing requirements. Track every cable run, switchboard, and conduit installation.
Mechanical & Plumbing Subcontractors
Tracking variations across multiple job sites with different billing cycles and retention requirements. Never lose track of a variation again.
Growing QS Practices
Quantity surveying practices serving multiple clients simultaneously need professional tools that scale without enterprise complexity.
Trade Contractors Outgrowing Spreadsheets
Specialty trades who’ve hit the limits of Excel but don’t need—or can’t afford—Procore-level solutions.
Whether you’re a specialty contractor in the UK, Australia, or expanding internationally, Praevius adapts to your progress claim requirements and local billing formats.
Our Philosophy
Proactive, Not Reactive
The best cost control happens before problems arise. Praevius anticipates variances, flags anomalies, and surfaces insights—so you can act, not just react.
Built for Construction
Not accounting software with construction labels. Every feature designed around real QS workflows: progress claims, variations, retainage, percentage complete.
AI as Assistant
AI enhances your expertise, it doesn’t replace it. Specific, measurable outcomes—not vague promises. You make the decisions; Praevius handles the grunt work.
Construction Expertise Built In
20 Years QS Experience
Founded by practicing quantity surveyors who understand real-world construction cost management challenges—not software developers guessing what you need.
International Projects
Experience across UK, Australia, and Poland informs support for multiple billing formats and contract types (JCT, NEC, AIA, SOPA).
AI-First Approach
Leveraging Claude AI for intelligent reporting while keeping construction professionals in control. AI enhances your expertise—it doesn’t replace it.
Part of BIM Takeoff
BIM Takeoff
Professional BIM 5D cost estimation and quantity surveying services. 20 years of international experience across UK, Australia, and Poland. Delivering quantity takeoffs with +/-5% accuracy in 3-10 days.
Praevius.app
The cost control intelligence layer. Where BIM Takeoff delivers project-specific expertise, Praevius provides the ongoing visibility and control that keeps projects profitable.
Ready to Work Smarter?
Start your free trial today. Experience construction cost control done right. Explore our features or view pricing options.