homes.plus — Investor Overlay Chrome extension security report

Homes Plus overlays the numbers investors actually need onto every Zillow listing — without ever leaving the page. Open any property at zillow.com/homedetails/... and a clean side panel appears with: • Estimated monthly rent (Random Forest model trained on 41,000+ rentals across 48 states, cross-checked against Zillow's own Rent Zestimate when available) • Cap rate using actual property tax + itemized expenses (insurance, maintenance, vacancy, HOA) • Cash-on-cash return (25% down, 7.2%, 30-year — customizable in settings) • 0–100 deal score combining the underwriting math with live demand signals • Days on market + saves, with a 7-tier demand pill (insane → very hot → hot → healthy → mild → cold → dead) • Zillow's own "sells faster than X%" hot-home indicator when present • Annual property tax, HOA, Zestimate delta from list price, recent price cuts • Save listings to a sortable, filterable list with one-click CSV export No copy-paste, no spreadsheet, no five tabs open at once. Underwrite a property in the time it takes to scroll past the photos. WHY THIS EXISTS Real estate investors evaluate dozens of listings per week. The data is on Zillow; the math is not. Most analysts solve this by exporting addresses to Excel, pulling Rentometer values, and computing metrics by hand. homes.plus does it inline, on every listing page, with no workflow change. THE RENT MODEL Rent estimates come from a Random Forest trained on 41,000+ public rental listings across 48 states and 7,600+ ZIP codes. Coverage is strongest where training data is densest; listings in thinly-covered markets are flagged so you know when to double-check. When Zillow shows its own Rent Zestimate on the page, we display it inline alongside ours and cap our prediction tightly against it — so a model overshoot never quietly inflates the deal score on properties Zillow has solid comp data for. THE CAP RATE Cap rate is annual net operating income divided by purchase price. Most extensions use the "50% rule" shortcut (operating expenses ≈ 50% of rent), which over-estimates expenses in low-tax states and under-estimates them in high-tax states. We pull the actual property tax from Zillow's public tax history when available and add typical insurance (0.4% of price), maintenance (1%), vacancy (6% of rent), and HOA. A more honest first-pass screen than the 50% rule. THE DEAL SCORE A 0–100 composite combining cap rate, cash-on-cash, days on market, save count, Zillow's hot-home percentile, recent price reductions, and Zestimate delta from list. 70+ is strong; 50–70 is decent; under 50 is weak. Sortable across your saved list. Use it as a first-pass filter, not a substitute for due diligence. CUSTOMIZE THE ASSUMPTIONS The toolbar popup includes a settings page where you can override the financing defaults — down payment %, interest rate, insurance, maintenance, vacancy, management ratio. The overlay re-renders with your numbers. Useful if you finance differently, target a different rehab buffer, or want to stress-test a deal at higher rates. SAVE + EXPORT One-click save on any listing. The saved page shows your full pipeline as a sortable table with color-coded deal scores, filters by state / zip / score range, and a CSV export for spreadsheet work or sharing with partners. Metrics are snapshotted at save time so your list doesn't silently re-rate as prices change. PRIVACY The extension only runs on Zillow listing pages. It reads the publicly displayed price, beds, baths, sqft, address, and additional listing facts from the page, and sends them to api.homes.plus to compute the metrics. Optional Google sign-in unlocks weekly bonus credits. No account is required for the free tier. We log coarse, anonymous usage events (e.g. "an analyze happened in zip 07036, cap rate bucket 5–7%") so we can fix bugs and improve the rent model — never raw listing data or anything that identifies a user. Full policy: https://homes.plus/privacy.html ROADMAP v0 ships on Zillow only. Redfin and Realtor.com support, server-synced saved properties across devices, and Google Sheets export are on the roadmap. Vote at hello@homes.plus. Made by eCuras LLC. Questions? hello@homes.plus ```