| Rudy Flores · (619) 392-6714 · Real Estate Strategist, Realtor® · CalDRE #02257808 · Responsible Broker CalDRE #01481919
REAL ESTATE CORONADO ISLAND
Home Tools

Coronado Island Equity: Your Gain Since Buying

Island owners: enter what you paid for your Coronado home, when, and the ZIP code to estimate today's value, principal paid, your equity and a net.

HOME TOOLS · OCTOBER 2026

Life on the island has a way of making the years go by, and values with them. This estimator takes the price you paid for your Coronado home and moves it forward with Zillow's typical values for 92118, month by month.

Give it your loan details and you will see what you have paid down, the equity you likely hold and an estimated net after costs. When you want a firmer figure, Rudy can check recent island sales for you.

Your purchase
Values are Zillow's typical value for the ZIP code, not for your street.
Uses Zillow's series for that home type when the ZIP code has one for your purchase month.
From 1985. Before 2000 the estimate chains FHFA's yearly ZIP index to Zillow.
Starts at Zillow's typical single-family value in 92118 for June 2016; use your own price.
Your loan
Pick the second choice if you refinanced or have a home equity line.
Used with the first choice. Enter 0 for a no-down-payment loan.
Blank uses the Freddie Mac average for the month you bought (15-year average for a 15-year term from August 1991).
The loan you took out when you bought.
Used with the second choice: from your latest statement; include any home equity line.
Today
Moves the range around the estimate, the same rule of thumb as the home value range tool.
Commission, escrow, title and transfer taxes, as a share of the price; commission is negotiable.
Leave at 0 to estimate it from your price and the State Board of Equalization's yearly factors.

Dreaming about your next chapter, on the island or off it? Begin with the Home Strategy Quiz, four quick questions, and Rudy will map out a plan.

Take the Home Strategy Quiz

Talk to a lender. Rates, loan programs and approvals come from lenders, not from websites or real estate agents. Talk to your own mortgage broker, or use our preferred lender, Point Mortgage Corporation (NMLS #231073), at (619) 475-4095. You are always free to choose any lender you like, and you can verify any lender’s license at nmlsconsumeraccess.org.

This is an estimate for planning, from Zillow's ZIP-wide typical values applied to your purchase price. It is not an appraisal, a broker price opinion, an offer, a loan offer, or tax or legal advice, and Rudy is a real estate agent, not a lender, appraiser or tax professional.

How the estimate works

  1. Zillow's typical value for your home type in 92118 is read for your purchase month and for the latest month.
  2. That change is applied to the price you paid, and the condition you select shapes the range.
  3. A loan you still pay is reduced by standard fixed-rate payments, starting the month after you bought, to estimate what remains.
  4. Equity is the midpoint less that balance; the net subtracts selling costs as well, before tax.
  5. The Prop 13 estimate grows your purchase price with the Board of Equalization's inflation factor for every tax year, no more than 2%.

Your Prop 13 value and Prop 19

Island homes are taxed on their Prop 13 value, which begins with the sale price and grows by 2% or less each year. Long-time Coronado owners often find that value far below what the home would bring today.

Proposition 19 can help owners 55 or older who leave the island for another California home: the taxable value may come along when that home is purchased inside two years of the sale, for as many as three moves. The assessor confirms who qualifies.

Island owners often turn to the downsizing calculator and Prop 13 since 1978: a Coronado timeline.

Sources and dates

Questions owners ask

How close is a ZIP estimate for an island home?

Close in direction, looser in amount. A bay view, a corner lot or a rebuild can put your home well outside the range. Rudy's free review of recent Coronado sales gives a number you can lean on.

Why the ZIP code and not my block?

Zillow's ZIP figures come out every month and reach back to 2000, a steady way to measure change since you bought. Your block shows up in comparable sales.

I refinanced. Which loan option fits?

The second one. Enter what you owe today on every loan against the home, including any line of credit, and the page uses it.

Is my Prop 13 value what the home is worth?

No. It is the value the county taxes, which can rise from your price by 2% a year at most. Market value on the island is usually much higher, and your tax bill lists the exact taxable value.

More from Rudy

Want a Real Number?

Rudy will check the latest island sales against your estimate and share what he sees, with no pressure.

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