Mass Appraisal in Minutes,
Not Months
Run IAAO-compliant ratio studies with automated statistics, ML-powered clustering, and transparent valuations. From raw data to certified values — no installations required.
< 2 min
Pipeline runtime
IAAO
Compliant statistics
100%
Browser-based
256-bit
Encryption
How It Works
Four Steps. Under Two Minutes.
From raw CSV files to a fully compliant ratio study report — no installations, no manual data wrangling.
Platform Capabilities
Everything You Need for Mass Appraisal
A complete pipeline built for the unique requirements of government assessment offices.
Automated Data Ingestion
Upload CSVs and let MAPS auto-detect your CAMA schema. Supports Tyler iasWorld, ARC, and custom formats with built-in validation.
IAAO-Compliant Statistics
COD, PRD, PRB, and median ratios calculated automatically at district, neighborhood, and property-type levels.
AI-Powered Comparables
ML-derived feature vectors identify the most relevant comparable sales for accurate, defensible market-based valuations.
What-If Simulations
Adjust land and improvement factors in real time. See how changes affect your ratios before committing to new values.
Interactive Map Overlays
Visualize parcels, districts, and outliers on interactive maps. Identify spatial patterns and valuation clusters at a glance.
Print-Ready Reports
Generate certified ratio study reports with charts, maps, and compliance scores — formatted for board presentations and state review.
What Assessors Say
Trusted by Appraisal Professionals
Hear from assessment offices that switched to M.A.P.S.
“MAPS cut our ratio study turnaround from two weeks to under an hour. The automated IAAO statistics alone saved us hundreds of hours per cycle.”
Sarah Mitchell
Chief Appraiser, County Assessor's Office
“Our COD dropped below 10 for the first time after switching to ML-powered clustering. The data segmentation is leagues ahead of what we had.”
James Rodriguez
Assessment Director, Municipal Assessment Dept.
“What-if simulations let us test factor changes before committing — a game changer for our board presentations and taxpayer appeals.”
Karen Olson
Property Tax Analyst, State Revenue Office
Your Next Ratio Study Could
Take 2 Minutes
Join the assessor offices that trust M.A.P.S for accurate, transparent, and defensible mass appraisals.