Amy Steward was three blocks into her list when the police pulled up. The Coronado city councilmember had a spreadsheet in one hand and a stack of addresses in the other, walking house to house through the Village, and to a patrol officer she looked less like elected official doing homework and more like someone casing the neighborhood. She laughed telling the story at the October 21 council meeting. Mayor John Duncan couldn't resist a follow-up: "And please check on the suspicious woman parked outside my house."
What Steward was actually doing was checking the city's work. The council had just voted to exempt more than a thousand Village homes from mandatory historic review, and she wanted to walk the list herself before signing off on which properties belonged in that group. The vote she was double-checking, finalized on November 4, 2025 and in effect since December 4, closed out a debate that had run for years and reshaped something every Coronado Village buyer needs to understand before comparing two listings on the same block: not every old house in the Village is treated the same way by the city, and the difference shows up nowhere on a comp sheet.
What Changed in December
For years, any Coronado Village home 75 years or older triggered an individual historic review before an owner could touch the exterior or apply for a demolition permit. Between 2019 and 2023, the city spent roughly $863,000 assessing 122 properties one at a time. Leaders worried the preservation program itself was becoming too expensive to sustain, so in December 2024 the council directed staff to build something faster: a citywide survey that would sort homes into tiers based on how much of their original architecture survives, so the city would already know the answer before a permit application ever landed on a desk.
The survey covered the city's historic core, meaning it skipped Naval Air Station North Island, the Navy's amphibious base, Port of San Diego property, and Coronado Cays entirely. This is a Village story. It graded homes against a single question, Criterion C in the municipal code, which asks whether a structure still possesses the distinctive characteristics of its architectural style. Nearly every home the city has designated historic over the years qualified under that same criterion, which is why staff built the whole survey around it.
The results split Village housing stock into three groups. Tier 1 covers 186 homes that are unaltered or nearly so, still potentially eligible for full historic designation. Tier 2 covers another 140 that have been somewhat modified. Tier 3, the largest group by far at 1,058 properties, covers homes altered enough that they no longer read as historic and are now exempt from the mandatory review process altogether. Roughly 130 more properties couldn't be assigned a tier, usually because they weren't visible enough from the street to judge, and those will still go through individual review as they come up.
Three Tiers, One Line That Matters
| Tier 1 & Tier 2 | Tier 3 | |
|---|---|---|
| Mandatory review before exterior changes or demolition | Yes | No |
| Can still request historic designation voluntarily | Yes | Yes |
| Path to a Mills Act tax contract | Open, if designated | Closed, unless owner separately pursues designation |
| Renovation and ADU flexibility | Constrained by Secretary of the Interior's Standards once designated | Unconstrained by historic rules |
That table is the whole story in miniature. A home's tier decides which of two very different ownership experiences it's set up for, and the difference has nothing to do with square footage, lot size, or how the house looks from the sidewalk today.
The Trade Coronado Never Advertises
Here's the part that doesn't show up in a listing description. A Tier 3 home is free. An owner can add an ADU, reconfigure a floor plan, or eventually redevelop the lot without a hearing in front of the Historic Resource Commission. But that same freedom permanently closes the door on a Mills Act contract, because a Mills Act agreement requires the home to already carry a historic designation, and a Tier 3 property was specifically defined as one that no longer qualifies for that designation under the survey's own criteria.
A Tier 1 or Tier 2 home runs the opposite trade. If it goes through review and earns designation, the owner gains access to a real property tax reduction, but the home is then bound to the Secretary of the Interior's Standards for any future work, subject to a site inspection every five years, and expected to stay that way indefinitely, since Mills Act contracts renew automatically in ten-year rolling terms unless someone actively cancels.
One public comment submitted during the review period captured the tension well. A homeowner on Third Street described a 1925 house sitting behind an eight-foot fence, unremarkable enough that they assumed it carried no historic weight, and said they were surprised to learn that under the old rules, adding an ADU could have meant paying over $1,000 and going through a lengthy neighbor notification process anyway. Under the new tier system, if that property landed in Tier 3, that friction disappears. If it landed in Tier 1, it doesn't.
This is the line running through Village housing stock that a median price per square foot can never show. Two 1930s cottages a few doors apart, similar bones, similar square footage, can carry opposite futures. One is unlocked for renovation and ineligible for a tax break. The other is locked into a review process and eligible for one of the more meaningful property tax reductions available to a California homeowner.
What a Mills Act Contract Is Actually Worth Here
The Mills Act itself has Coronado roots. It was written into California law by James Mills, a state senator who lived in Coronado, after a developer proposed demolishing the Hotel del Coronado in the early 1970s. The law lets cities offer historic property owners a tax break in exchange for a binding commitment to preserve and maintain the structure, and Coronado has participated since the city adopted its own ordinance.
The mechanics work differently from a standard assessment. Instead of using comparable sales, the county assessor values a Mills Act property based on the income it could theoretically generate as a rental, then applies a capitalization rate to arrive at a much lower number for tax purposes. Coronado's own program materials, tied to City Council Resolution 8524, state that an owner may see savings of up to 50 percent of current property taxes, though the actual figure can be lower, and owners who have held a property for decades under Proposition 13's already-suppressed assessed value often see no benefit from the Mills Act at all.
Public reporting on Coronado's active contracts is not perfectly consistent. One city-adjacent account puts the number of Coronado properties benefiting from the Mills Act at over 150. A separate county-wide analysis published in March 2026 put the figure closer to 200. Either way, that's roughly a tenth of the Village's older housing stock carrying a materially different tax bill than a similar home next door. The same analysis pointed to Crown Manor at 1015 Ocean Blvd., a landmark residence built in 1902, as an example of the scale of savings a designated Coronado property can carry. It's not a typical bungalow, but it illustrates the ceiling on what the program can do for a property that qualifies.
Reading a Listing Like Someone Who Knows the Tier Matrix
Before assuming a Village home's price reflects its full carrying cost, it's worth checking two things. The city's Historic Preservation page hosts an interactive map showing every designated resource and, since December, the tier assigned to surveyed properties. And because a Mills Act contract runs with the land rather than the owner, a buyer inherits both the tax benefit and the maintenance obligations the moment escrow closes, so it belongs in the same conversation as inspection reports and title work, not an afterthought discovered after the fact.
None of this changes what makes a Coronado Village home worth buying. It changes what two homes at the same price point actually cost to own five years from now, and what either one will let an owner do to it. That's a harder thing to see than a median, and it's exactly the kind of detail worth walking through with someone who tracks these changes as they happen rather than after the fact.
FAQ
If a home is Tier 3, can it ever become historic later? Yes. Tier 3 only means the property is exempt from mandatory review. An owner can still request a formal historic designation voluntarily under Criterion C at any time.
Does a Mills Act contract transfer when a home sells? Yes. The contract is recorded against the property, not the owner, and runs in automatic ten-year terms. A buyer takes on both the tax benefit and the preservation obligations at closing.
Does any of this apply to Coronado Shores or Coronado Cays? No. The survey covered the city's historic core and specifically excluded Coronado Cays, along with Navy and Port of San Diego property. Coronado Shores towers are multi-family condominiums rather than the single-family homes this survey and the Mills Act residential program are built around, so the reform doesn't reach them either.
What happens to the roughly 130 homes that weren't assigned a tier? They go through the same individual review process that applied before the reform, typically triggered when the home reaches the 75-year threshold or when an owner files for a permit affecting street-visible features.
Coronado's historic rules just changed for the first time in years, and the next round of Village comps won't explain why two similar houses landed at different numbers. If you're weighing a purchase or a sale on the island, The Morabito Group can pull the tier and Mills Act history on a specific address before you write an offer. Request a personalized Coronado market consultation and get the full picture before the comps mislead you.
