About Us
Modernizing Mass Appraisal
M.A.P.S was built to replace outdated tools with enterprise-grade analytics designed specifically for government assessors.
Our Mission
Mass appraisal is the backbone of fair property taxation. Yet most assessment offices still rely on legacy desktop software, manual spreadsheets, and processes that take weeks to complete.
M.A.P.S — Mass Appraisal & Property Services — exists to change that. We build modern, browser-based tools that bring IAAO-compliant analytics, machine learning, and transparent valuations to every assessor's office, regardless of size or budget.
See It in Action
IAAO-Compliant Results, Instantly
M.A.P.S. computes COD, PRD, and median ratio statistics that meet IAAO standards. Every metric comes with a complete audit trail so you can defend your valuations with confidence.
Ratio Study Results
Dane County, WI — 2026
COD
< 15%
—
PRD
0.98 – 1.03
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Median Ratio
0.90 – 1.10
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Compliance by Property Type
Why Switch
Legacy Tools Weren't Built for This
See how M.A.P.S transforms every step of the mass appraisal workflow.
The Old Way
- 2–4 weeks per valuation cycle
- Manual ratio statistics in spreadsheets
- Desktop-only legacy installs
- No audit trail for appeals defense
- Hand-picked comparable sales
With M.A.P.S
- Under 2 minutes, start to finish
- Automated COD, PRD, PRB & median ratios
- 100% browser-based — any device, any OS
- Complete audit trail with appeal-ready exports
- ML-powered comparable sales matching
What We Stand For
Accuracy First
Every statistic we compute meets IAAO standards. We never trade accuracy for speed — we deliver both.
Radical Transparency
Assessors need to defend their valuations. Every calculation in M.A.P.S comes with a complete audit trail and clear methodology.
Built for Government
We understand the unique requirements of public-sector IT: browser-based access, no local installs, enterprise-grade security, and full compliance.