Real Estate Financial Monitor — ROI, Cap Rate & Investment Analyzer

Automatically analyze any property listing and get full financial metrics. Works on Zillow, Redfin, Realtor.com and more. No API keys needed.

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What This Actor Does

Paste in any property URL and get back:

Property Data (auto-extracted)

• Address, price, beds, baths, sqft, year built
• Days on market, HOA fees, lot size
• Zestimate vs listing price gap
• Tax assessment value and annual taxes
• Price history (last 5-8 transactions)
• School ratings, Walk Score, Transit Score

Financial Calculations (from your inputs)

• Monthly mortgage payment
• Monthly ownership cost (mortgage + expenses + HOA)
• Cap Rate (%)
• Cash-on-Cash Return (%)
• Gross Rent Multiplier
• Price-to-Rent Ratio
• Annual Net Operating Income (NOI)
• Annual Cash Flow
• Break-even rent needed
• Down payment amount

Investment Summary

• Investment rating: Excellent / Good / Fair / Poor
• Recommendation: Buy / Hold / Pass
• Underpriced vs Zestimate signal
• Cash flow positive/negative flag

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Use Cases

• Buy-and-hold investors — evaluate dozens of properties in minutes
• House flippers — check price vs tax assessment and price history
• First-time buyers — compare total monthly cost across listings
• Real estate syndicators — batch analyze 50+ deals quickly
• Portfolio managers — monitor property values over time
• Agents — build investor reports for clients automatically

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How To Use

Basic: Single property

{
  "propertyUrls": [
    "https://www.zillow.com/homedetails/456-Oak-Ave-Austin-TX-78701/12345_zpid/"
  ],
  "estimatedRent": 2800,
  "downPaymentPct": 20,
  "mortgageRatePct": 7.0,
  "mortgageYears": 30,
  "annualExpenses": 5000
}

Batch: Multiple properties

{
  "propertyUrls": [
    "https://www.zillow.com/homedetails/property-1/",
    "https://www.zillow.com/homedetails/property-2/",
    "https://www.redfin.com/TX/Austin/property-3/"
  ],
  "estimatedRent": 3000,
  "downPaymentPct": 20,
  "mortgageRatePct": 7.25,
  "annualExpenses": 6000
}

Flip scenario (no rent needed)

{
  "propertyUrls": [
    "https://www.zillow.com/homedetails/your-flip-property/"
  ],
  "estimatedRent": 0,
  "purchasePrice": 265000,
  "downPaymentPct": 100,
  "annualExpenses": 20000
}

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Input Fields

Field	Type	Default	Description
propertyUrls	array	[]	Listing URLs (Zillow, Redfin, Realtor.com)
searchUrls	array	[]	Search page URLs to batch-scrape
estimatedRent	integer	0	Monthly rental income estimate ($)
purchasePrice	integer	0	Override listing price (0 = use listed)
downPaymentPct	integer	20	Down payment % (0-100)
mortgageRatePct	number	7.0	Annual mortgage rate %
mortgageYears	integer	30	Mortgage term: 10, 15, 20, 25, 30
annualExpenses	integer	5000	Annual non-mortgage costs ($)
useProxy	boolean	false	Enable Apify proxy rotation

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Output Example

{
  "property": {
    "address": "456 Oak Ave, Austin, TX 78701",
    "listingPrice": 385000,
    "beds": 3,
    "baths": 2,
    "sqft": 1850,
    "pricePerSqft": 208,
    "daysOnMarket": 12
  },
  "valuation": {
    "zestimate": 392000,
    "zestimateDeltaPct": 1.82,
    "taxAssessedValue": 310000,
    "priceHistory": ["Jul 2026 | Listed | $385,000", "Mar 2022 | Sold | $340,000"]
  },
  "investment": {
    "monthlyMortgage": 2050,
    "monthlyOwnershipCost": 2467,
    "annualCashFlow": 4000,
    "breakEvenRent": 2467
  },
  "ratios": {
    "capRatePct": 7.43,
    "cashOnCashReturnPct": 5.19,
    "grossRentMultiplier": 11.46
  },
  "summary": {
    "investmentRating": "Good",
    "recommendation": "👍 Buy — solid investment",
    "cashFlowPositive": true
  }
}

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Supported Sources

Site	Listing	Pricing	Tax Data	Price History
Zillow	✅	✅	✅	✅
Redfin	✅	✅	✅	✅
Realtor.com	✅	✅	⚠ Partial	⚠ Partial
Generic sites	✅	✅	❌	❌

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Pricing

$0.20 per property analyzed

• 5 properties = $1.00
• 25 properties = $5.00
• 100 properties = $20.00

All financial metrics included. No extra charges.

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Important Notes

• Public data only — we scrape publicly visible listing pages, no login required
• Zillow/Redfin ToS — user responsible for compliance in their jurisdiction
• Rent estimate — you provide this; accuracy affects financial calculations
• Not financial advice — always verify with a licensed real estate professional

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Troubleshooting

Empty results or no price extracted?

• Use full Zillow URL (copy from browser, not from search)
• Try enabling useProxy: true

Financial ratios show null?

• Add estimatedRent to unlock cap rate, COC, GRM

Actor times out?

• Reduce to <20 properties per run
• Set useProxy: true if Zillow is blocking

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Support

Leave feedback in Apify comments — we respond within 24 hours.