Sources Pricing Docs Real Estate API Estimate Engine Use Cases vs RentCast vs Mashvisor MCP Start building →
POWERED BY PropTechUSA.ai ESTIMATE ENGINE · 16 LIVE DATA SOURCES · API + MCP · ALL 50 STATES
Transparent Methodology · Nationwide Intelligence · API + MCP

The rent estimate API
that shows its work.

Get a low, mid, and high rent range with confidence context and source-level methodology—inside the same platform that resolves parcels, enriches property records, returns geometry, and connects directly to AI through MCP.

Start building → See the model ↓
SAMPLE RESPONSE — /v1/estimate?zip=55104&beds=2
RENT ESTIMATE — 55104, MN 2 BEDROOM
LOW
$1,482
MID ★
$1,609
HIGH
$1,738
Confidence: 100% Trend: Stable YoY: +3.63% Range: ±8%
MODEL WEIGHTS — HOW WE GOT $1,609
Zillow ZORI
40% $1,534
Census ACS
25% $1,159
HUD FMR
20% $1,685
Redfin Cap Rate
15% $1,736
155M+
Parcels in the live intelligence layer
16
Live data sources unified through one API
348/348
Exact resolved customer chains independently replayed
23
Florida counties verified in production
<50ms
Edge-response target for cached intelligence
The Estimate Engine

Four sources. Explicit weights.
Full transparency.

A point estimate without methodology is difficult to evaluate. PropData's estimate engine returns the contributing data points, their model weights, the resulting range, and confidence context so your application can audit and explain the output.

40%
SOURCE 1 — ZILLOW ZORI
Median Asking Rent

The Zillow Observed Rent Index provides a current market-rent signal that helps distinguish present asking-rent conditions from slower-moving historical benchmarks.

Current-market signal used alongside public affordability and bedroom-level benchmarks.
25%
SOURCE 2 — US CENSUS ACS
Median Gross Rent

Census ACS 5-year estimates capture what renters are actually paying across all occupied units — not just newly listed ones. It anchors the estimate to real affordability in the market.

Anchors against asking-rent inflation. Reflects what renters can actually pay.
20%
SOURCE 3 — HUD FAIR MARKET RENTS
Bedroom-Level Benchmark

HUD publishes annual Fair Market Rents by bedroom count. The values provide a public benchmark used in housing-program payment standards and market comparisons.

Government-grade bedroom-specific benchmark. Used directly for the right bed count.
15%
SOURCE 4 — REDFIN CAP RATE MODEL
Implied Market Rent

A sale-price and cap-rate-derived signal provides an investment-oriented cross-check against the rent signals from listings and public datasets.

Underwriting-oriented context—not a substitute for property-specific expenses or investment analysis.

Transparent estimates need
reliable property identity.

The estimate engine is part of a larger property intelligence system. PropData preserves county-native parcel identities, supports county-scoped identifier aliases, fails closed on ambiguous matches, and carries verified parcel context through the enrichment workflow.

LATEST EXTERNAL-WORKFLOW VERIFICATION
Every resolved customer chain returned attributes.
POST-DEPLOY · AUGUST 2026
348/348
Exact recorded resolved requests passed in an independent read-only replay.
133/133
Previously failing identifier-handoff chains repaired.
0
Parcel-identity mismatches across the completed replay.
0
Resolved parcels returned without property attributes.
This gate validates the coordinate-to-parcel-to-enrichment workflow for the resolved requests in the customer test. Rent-estimate depth and confidence still depend on source availability for the requested market.
Why This Matters

You can't sell a number
you can't explain.

If you're building a tool that suggests a rent price to a landlord, a comp to an investor, or a valuation to a buyer, users will ask why. PropData returns the source-level context your application needs to provide a real answer.

Landlords trust it

Show the breakdown: current-market rent data, public benchmarks, and occupied-unit rent context, together with each source's contribution.

Investors underwrite it

Investment teams need a range and a basis—not only a single number. PropData returns low, mid, and high scenarios with confidence context for use in underwriting workflows.

Lawyers can defend it

Documented public benchmarks and visible methodology make internal review easier. Applications should still apply their own legal, fair-housing, and compliance requirements.

Integration

One endpoint. Every bedroom.
All 50 states.

Pass ?beds=0 through ?beds=4 for bedroom-specific estimates. The model applies nationally-calibrated multipliers derived from HUD FMR ratios.

GET /v1/estimate?zip=55104&beds=2
// Full response with model transparency
{
  "estimate": {
    "bedrooms": 2,
    "monthly_low": 1482,   // -8% from mid
    "monthly_mid": 1609,   // weighted average
    "monthly_high": 1738,  // +8% from mid
    "confidence_pct": 100// all 4 sources returned data
    "market_trend": "stable",
    "yoy_rent_change": "+3.63%"
  },
  "methodology": {
    "data_points": [
      { "source": "Zillow ZORI", "weight_pct": 40, "adjusted_rent": 1534 },
      { "source": "Census ACS",  "weight_pct": 25, "adjusted_rent": 1159 },
      { "source": "HUD FMR",    "weight_pct": 20, "adjusted_rent": 1685 },
      { "source": "Redfin",     "weight_pct": 15, "adjusted_rent": 1736 }
    ]
  }
}

What you get vs
every other option.

PROPDATA ESTIMATE ENGINE
Low / mid / high range
Confidence score (0–100%)
Full model weights returned in API
4 named sources, individually auditable
Bedroom-specific (Studio → 4BR)
Government-sourced data (HUD + Census)
Market trend + YoY change
Production access starts at $79/month.
TYPICAL ESTIMATE API
Single point estimate
No confidence score
Black box — methodology not disclosed
Sources not named
Varies
Proprietary model only
Sometimes
Per-call billing
What Developers Build

Built for real use cases,
not demos.

Rental Pricing Tools

Give landlords a defensible asking price with a low/mid/high range they can explain to their property manager. No more guessing from Zillow comps.

/v1/estimate?zip=ZIP&beds=BR

AI Real Estate Agents

Feed structured estimates and methodology into an AI workflow through REST or the PropData MCP server. Keep the underlying evidence attached to the answer.

REST OR MCP → STRUCTURED CONTEXT → ANSWER

Section 8 Compliance Tools

HUD FMR is one of the model inputs. Applications can surface the bedroom-level public benchmark alongside the broader estimate and methodology.

HUD FMR included in model weights

Investment Underwriting

Use the low, mid, and high scenarios as rent inputs in your own underwriting model, then apply property-specific vacancy, expenses, financing, and cap-rate assumptions.

monthly_low/mid/high × 12 = NOI range

Portfolio Management Apps

Use ZIP- and state-level requests to compare rent scenarios across markets, or ask about a custom endpoint for production portfolio workflows.

/v1/estimate?state=TX&beds=2

Tenant-Facing Tools

Show renters the public HUD benchmark alongside broader market context, while clearly distinguishing a benchmark from a property-specific rent determination.

fmr_2br — government benchmark

Start estimating rents today.

Production access starts with 10,000 monthly requests at $79/month. Builder and custom plans add higher-volume workflows, priority expansion, and integration support.

STARTER
$79
/month · 10,000 requests included
10,000 requests per month
All 16 live data sources
Property, parcel, geometry, rent, market, comps, and neighborhood endpoints
API and MCP access
Priority support
Cancel anytime
BUILDER + CUSTOM
Let's talk
higher-volume and custom workflows
Higher request volumes
Priority county and source expansion
Custom endpoints and response shaping
Direct integration support
API and MCP implementation planning
View plans → Discuss an integration →

Everything in the API.