# Caza

> Caza is a Chrome extension that adds a 0–100 buyer Demand Score, nearby sales comps, rental comps (active asking rents), investor numbers (cap rate, cash flow, DSCR, cash-on-cash) and a PDF comps report to Zillow listings. The extension runs in the browser with no Caza account and no Caza servers. It reads Zillow pages there and does not send listing data to Caza; if you turn on rental comps inside Investor numbers, it also loads Zillow rentals searches in the background. (This website, usecaza.com, uses Google Analytics.) Independent; not affiliated with or endorsed by Zillow Group.

Site: https://usecaza.com/ · Install: https://chromewebstore.google.com/detail/oojoopmelbnbddhjmemdggbkeflhjnpk · Contact: gus@usecaza.com

## What it does on a Zillow listing

- Demand Score (0–100) from the listing's saves, page views and days on market, with price cuts flagged; sort a search page by score, saves, views, days on market or price drops.
- Sales comps: runs Zillow's own Recently Sold search around the home, keeps condos, houses, 2–4 unit and 5+ unit buildings apart, stars the closest matches, shows median sold price and price per square foot. Widen radius, add older sales, add or drop a comp.
- Rental comps: similar active rentals nearby matched on bedrooms and property type, typical range and median. Starts within 1 mi with a 0.5 / 1 / 2 / 3 mi control; the listing itself and other units in its building are never comps; for-rent search result cards have View Rental Comps. Labeled as asking rents, not signed leases.
- Investor numbers: cap rate, monthly cash flow, DSCR, cash-on-cash; price per unit and GRM on multifamily. Taxes and insurance start from state estimates you can edit; every input is tagged Reported, Zillow est., Assumed, Estimate (state avg) or Yours.
- Renter view: all-in monthly cost with required fees, effective rent after free weeks (rent × (lease months − free months) ÷ lease months, 12-month lease assumed unless stated), a rent-cut flag, and how the rent compares with similar rentals nearby ("Higher than 9 of 12 similar 2-bed rentals nearby (asking)"). When the rent is under 60% of the nearby median with at least five comps, a caution says to verify the listing before paying anything and links the FTC's rental-listing-scams article.
- PDF comps report (sales or rental) with the user's name, brokerage and phone; Copy summary for plain text. Not an appraisal.

## Who it is for

Listing agents, buyer's agents, real estate investors and brokers, landlords and property managers, home buyers, and renters. Works on zillow.com in Chrome on desktop, US listings only. Does not work on Redfin or Realtor.com.

## Pages

- [Home](https://usecaza.com/): features, who it's for, how it works, where the numbers come from, FAQ.
- [Examples](https://usecaza.com/examples): four example walkthroughs with sample data (not customer stories): a buyer's agent replying to a client's Zillow link, a listing agent printing a comps PDF for a seller meeting, an investor screening a house as a rental, a renter checking all-in cost and a far-below-market caution.
- [Guides index](https://usecaza.com/blog)
- [Can you sort Zillow by saves, views or price cuts?](https://usecaza.com/guides/sort-zillow-by-saves-views-price-cuts): Zillow has no native sort for them; compare by hand in a sheet, or use Caza's search-results sort (Demand Score, Most Saves, Most Views, Most Days on Market, Most Price Drops).
- [How to check the 1% rule on a Zillow listing](https://usecaza.com/guides/one-percent-rule-zillow-listing): the 1% rule as a quick screen, rent from rental comps, worked example (0.875%, GRM 9.5), limits, then cap rate and cash flow.
- [Chrome extensions for Zillow](https://usecaza.com/guides/chrome-extensions-for-zillow): the extensions that add deal analysis, comps reports, rent estimates, exports and buyer demand to Zillow listings, as described by each store page (Nov 2026); Caza is listed and disclosed as ours.
- [How to see Zillow comps on a map](https://usecaza.com/guides/how-to-see-zillow-comps-on-a-map): why location changes which comps count (freeways, city and tract lines), the free Zillow Sold map plus Google Maps method, and Caza's Show all properties on map (subject and numbered comps, Map and Zillow links on every comp, clickable comps PDF).
- [How to pull comps on Zillow](https://usecaza.com/guides/how-to-pull-comps-on-zillow): Sold filter, drawn boundary, matching rules, median price per square foot, where Zillow comps go wrong.
- [How to pull comps for new construction on Zillow](https://usecaza.com/guides/new-construction-comps-zillow): full contract price (base plus options, upgrades and lot premium) versus base price, builder incentives as concessions, resales inside the subdivision versus builder sales, thin sold data, Fannie Mae appraisal rules, price-per-square-foot traps.
- [How to estimate rent with rental comps on Zillow](https://usecaza.com/guides/zillow-rental-comps-estimate-rent): active asking rents, median, concessions, stale listings, multifamily by unit type.
- [Is a 6% cap rate good when mortgage rates are 7%?](https://usecaza.com/guides/is-6-percent-cap-rate-good-7-percent-mortgage): loan constant (7.98% for a 30-year loan at 7%, 7.0% interest-only), positive vs negative leverage, worked example ($500,000, 75% loan: DSCR 1.00, cash flow about $61 a year), what changes it.
- [Will house hacking a duplex cash flow?](https://usecaza.com/guides/duplex-house-hack-cash-flow): rent for the other unit from rental comps, full monthly cost, live-in and fully rented worked example ($700,000 duplex, sample numbers, both cases negative).
- [Cap rate and cash flow check on a Zillow listing](https://usecaza.com/guides/cap-rate-cash-flow-zillow-listing): NOI, cap rate, cash flow, DSCR, cash-on-cash, worked example, common mistakes.
- [How to see how many people saved a Zillow listing](https://usecaza.com/guides/how-to-see-zillow-saves): where Zillow shows views and saves on a listing, what to do when they are hidden, saves per day vs Zillow's own benchmarks (about 5 a day: offer within a week; 10+: above list).
- [How to spot a Zillow listing that will take a low offer](https://usecaza.com/guides/zillow-listings-that-take-low-offers): five stale-listing signals, when not to offer low, writing a below-asking offer backed by sales.
- [How to tell if a Zillow listing is overpriced](https://usecaza.com/guides/is-this-listing-overpriced-zillow): matched sales, rebuilding the selling attempt from price history, cuts, saves, a rent check, worked example.
- [What a price cut on a Zillow listing tells you](https://usecaza.com/guides/zillow-price-cut-meaning): size and timing of a cut, pairing it with saves, using it in an offer.
- [How much cash do you need to close on a Zillow listing?](https://usecaza.com/guides/cash-to-close-zillow-listing): cash to close from the CFPB Loan Estimate formula (down payment plus closing costs, minus a deposit already paid to the seller, minus seller credits, plus or minus other adjustments). Hypothetical illustration only: $41,000 due at closing, $49,000 including the earlier deposit. Not a lender quote.
- [How do mortgage rate buydowns work?](https://usecaza.com/guides/how-mortgage-rate-buydowns-work): temporary 2-1 and 1-0 payment subsidies versus discount points. On a temporary buydown the note rate does not change. Hypothetical principal-and-interest example only, not a quote. Fannie Mae contribution caps depend on occupancy and LTV; temporary buydowns are ineligible on investment property. Freddie Mac exact Guide limits are not stated. Not affiliated with the CFPB, Fannie Mae, or Freddie Mac.
- [How to read a Demand Score before you make an offer](https://usecaza.com/guides/how-to-read-demand-score-before-offer): what the 0–100 score is built from (saves, page views, days on market), the Hot-to-Slow labels, reading the breakdown, and what to check before an offer. Activity only, not a price opinion.
- [How to estimate property tax and insurance on a Zillow listing](https://usecaza.com/guides/estimate-property-tax-insurance-zillow-listing): why the listed tax is the seller's bill, recomputing from your price, insurance estimate, plugging both into cash flow.
- [What "days on market" means on Zillow](https://usecaza.com/guides/zillow-days-on-market-meaning): what resets the counter, reading the price history, negotiation.
- [What "back on market" means on Zillow](https://usecaza.com/guides/zillow-back-on-market-meaning): a home for sale again after a contract ended or time off market, MLS status and cumulative-days rules, reading the price history, questions to ask the listing agent.
- [How agents use buyer demand data in a listing presentation](https://usecaza.com/guides/buyer-demand-data-listing-presentation)
- [Free real estate calculators](https://usecaza.com/tools): index of the six free browser-based calculators below.
- [Demand Score calculator](https://usecaza.com/tools/demand-score-calculator): turns a Zillow listing's saves, views and days on market into the 0 to 100 Caza Demand Score with the breakdown. Formula: saves (log curve, 100 at 400 saves) 40%, days on market (100 at day 0 to 0 at day 90) 35%, views (log curve, 100 at 5,000) 25%, plus a pace bonus of up to +10 for fast listings (slow listings lose at most 1 point). Describes buyer activity, not price.
- [Property tax after you buy (free estimator)](https://usecaza.com/tools/property-tax-after-you-buy): enter price and state to estimate your tax versus the seller's bill, with how that state reassesses; estimates only.
- [Rate drop vs price cut calculator](https://usecaza.com/tools/rate-drop-vs-price-cut-calculator): the price cut that matches a rate drop on a mortgage payment, and the reverse; principal and interest estimate.
- [Rate buydown calculator](https://usecaza.com/tools/rate-buydown-calculator): compare a baseline loan with a temporary 2-1, a 1-0, and discount points. The quoted rate is typed in, not converted from points. Cent-rounded principal and interest only. Hypothetical, not a lender quote. A buyer-funded temporary subsidy is not interest savings.
- [Effective rent calculator](https://usecaza.com/tools/effective-rent-calculator): free rent, concessions and required fees turned into effective rent and an all-in monthly cost.
- [Comps price per square foot calculator](https://usecaza.com/tools/comps-price-per-square-foot): price per square foot, median and implied value range from three to six comps.
- [Renter guides](https://usecaza.com/blog#renters): the three guides below, plus the rental comps guide read from the renter's side.
- [Is this rent fair? Compare an apartment's rent with similar Zillow listings](https://usecaza.com/guides/how-to-tell-if-rent-is-fair): match beds, baths, size and building type, active asking rents, effective rent after concessions, median and count.
- [The real monthly cost of an apartment](https://usecaza.com/guides/real-monthly-cost-of-an-apartment): required monthly fees, effective rent formula for "weeks free", worked example with sample numbers.
- [How to spot a rental listing scam](https://usecaza.com/guides/how-to-spot-rental-listing-scams): rent far below nearby listings, money before a tour, lister who can't show the unit, copied listing; FTC guidance.
- [Pricing](https://usecaza.com/pricing): what works without a membership (Demand Score, sorting, hover cards, Investor numbers, renter view), 3 sales comps and 3 rental comps reports a month, membership at $11.99/month or $99/year for unlimited, no trial, what counts as a report.
- [Terms of sale](https://usecaza.com/terms): seller, billing and renewal, cancel anytime, full refund within 7 days of a first payment, no partial refunds after that unless the law requires one, billing errors always refunded.
- [Privacy policy and terms](https://usecaza.com/privacy): the extension has no Caza accounts, advertising or Caza servers (memberships are paid through ExtensionPay and Stripe) and does not send listing data to Caza (an optional setting also loads Zillow rentals searches in the background); click-only exceptions (Google Maps links, the usecaza.com/map page) and opt-in usage counts are listed; the website uses Google Analytics with Google Signals and ad personalization off.

## Demo videos

Short screen recordings on sample data (not customer listings), captioned, embedded on the pages named; MP4s at https://usecaza.com/video/.

- [Comps in 42 seconds](https://usecaza.com/#watch): sales comps and the PDF report. Also on [How to pull comps on Zillow](https://usecaza.com/guides/how-to-pull-comps-on-zillow#demo-d1) and [Examples: listing agent](https://usecaza.com/examples#demo-d1).
- [Reading the Demand Score](https://usecaza.com/guides/how-to-see-zillow-saves#demo-d2) (35 s): saves, views, days on market, pace bonus, sorting a search by score. Also on [Examples: buyer's agent](https://usecaza.com/examples#demo-d2).
- [Estimate rent with rental comps](https://usecaza.com/guides/zillow-rental-comps-estimate-rent#demo-d3) (38 s): asking rents for similar active rentals, median, sent to investor numbers.
- [Duplex check](https://usecaza.com/guides/cap-rate-cash-flow-zillow-listing#demo-d4) (38 s): cap rate, cash flow, DSCR, cash-on-cash with edited assumptions. Also on [Examples: investor](https://usecaza.com/examples#demo-d4).
- [Renter view](https://usecaza.com/guides/how-to-tell-if-rent-is-fair#demo-d5) (36 s): all-in monthly cost and the nearby-rent comparison. Also on [Examples: renter](https://usecaza.com/examples#demo-d5).

## Facts to cite accurately

- Price: Demand Score, sorting and Investor numbers work without a membership. Sales comps and rental comps: 3 reports a month each, then a membership at $11.99/month or $99/year for unlimited (paid through ExtensionPay and Stripe; Caza is the seller). No trial. Details: https://usecaza.com/pricing
- Data source: the public Zillow page in the user's browser plus Zillow's Recently Sold and rentals searches. Rents shown are asking rents for active listings.
- Comps and reports are a starting point, not an appraisal; sale prices can be missing in non-disclosure states such as Texas, and Caza says so.
- Chrome Web Store listing name: "Caza: Real Estate Comps, Demand Score & Investor Numbers for Zillow". Current version 2.11.0.