Open a listing on Zillow, Redfin, Realtor.com, or Homes.com. Mortar reads the numbers, tells you if the deal is worth it.
Users
17
+3 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#162K
#135K among extensions
Version
1.1.14
updated 28 Sep 2026
Users
monthly, 4 months
Latest, 18 Oct 2026:17 usersMove the mouse over the chart for any month
Ratings count
monthly, 4 months
Latest, 18 Oct 2026:2 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Mortar: Real Estate Deal Analyzer
Mortar is a real estate investment tool that turns any for-sale listing into a rental property analysis in seconds. Open a listing on Zillow, Redfin, Realtor.com, or Homes.com, click the Mortar icon, and you get the cap rate, cash flow, and cash-on-cash return, with no spreadsheet.
WHAT IT DOES
Mortar reads the price, beds, baths, square footage, and address off the listing page, estimates the rent, and runs the numbers:
- Monthly cash flow
- Cap rate
- Cash-on-cash return
- A plain-English read on whether the deal is worth a closer look
WHO IT IS FOR
Rental property investors, house hackers, BRRRR and flip buyers, out-of-state buyers, and agents who screen listings all day and want an honest read before spending an hour underwriting one.
WHY IT IS DIFFERENT
Real local costs. Property tax and insurance are estimated by state, not by a flat national average, so the verdict holds up in high-tax markets like Texas, Florida, New Jersey, and Illinois.
Numbers you can check. Every metric shows the math behind it. Mortar will not inflate a deal to make it look better than it is.
Your assumptions, not ours. Set your own down payment, interest rate, and loan term. Type in your own rent and every metric recalculates.
WORKS ON
Zillow, Redfin, Realtor.com, and Homes.com for-sale listing pages.
PRICING
Free analyses every month, no card required. Pro adds unlimited analyses, buy-box scoring against your own criteria, saved deals, history, and side-by-side compare. Operator adds a full pro forma for buy-and-hold, BRRRR, flip, and short-term rental, with multi-year IRR, risk flags, your maximum allowable offer, and a one-page PDF deal memo.
PRIVACY
Mortar runs only on the listing page you ask it to analyze. It does not follow you
around the web, does not show ads, and does not sell your data.
getmortar.app
Mortar gives you estimates to help you screen deals. It is not financial, investment, or real estate advice, and it is not an appraisal.