The Real Property Assessment Division publishes a list of questions it gets from homeowners. One asks about a buyer who bought a home assessed above the Residential A threshold and recorded the deed after the deadline. They moved in and filed for the home exemption the same day. They wanted to know why the house was still taxed at the higher rate.

The city's answer was short. The deed recorded after the September 30 filing deadline and the October 1 assessment date. So the property stays in the Residential A class for the current tax year and the next one too. The buyer lived in the house the whole time, and it made no difference. The tax class depended on the recording date and on how the seller had used the property.

This matters for anyone buying in Kahala or along Diamond Head Road. Today, September 30, 2026, is this year's deadline.

The Rule That Sets The Bill

There are three conditions for a Honolulu home exemption. You have to own the home and live in it as your principal home. Your ownership has to be recorded at the Bureau of Conveyances on or before September 30 before the tax year. And you have to file the claim by that same September 30. Tax years run July 1 through June 30. That means a September 30 deadline controls the tax year that starts nine months later.

The exemption also decides which tax class you're in. According to the Real Property Assessment Division's Residential A information, an owner-occupied home with a home exemption is classed as Residential. A residential parcel assessed at $1 million or more without a home exemption is classed as Residential A. In other words, if you miss the exemption on a home above that line, you also land in the higher class.

That $1 million line catches far more homes than it used to. In August 2026, the median Oʻahu single-family home sold for $1,240,000, up 12.2% from a year earlier, according to the Honolulu Star-Advertiser's report on the monthly figures. When the islandwide median sits above the threshold, Residential A is no longer just a beachfront concern. In Kahala, it applies to almost every single-family purchase.

Same House, Two Classes

The FY2027 rate resolution is Resolution 26-62, adopted June 3, 2026. It covers July 1, 2026 through June 30, 2027, and sets these rates per $1,000 of net taxable value.

• Residential: $3.50
• Residential A, Tier 1: $4.00 on the first $1,000,000
• Residential A, Tier 2: $11.40 on everything above $1,000,000

The rates and thresholds are the same as in FY2026, according to the Real Property Assessment Division's FY2026 rate report. For FY2027, the home exemption is $120,000 for owners under 65 and $160,000 for owners 65 and older, according to the Real Property Assessment Division's home exemption page.

Here's a hypothetical Kahala home assessed at $3,000,000, with no other credits or exemptions. An owner-occupant under 65 subtracts $120,000 and pays $3.50 on the remaining $2,880,000, which comes to about $10,080 a year. Without the exemption, the same house falls into Residential A. That's $4,000 on the first million plus $22,800 on the next two million, about $26,800 a year. The gap is roughly $16,720 a year, or about 2.7 times the owner-occupied bill.

The main driver is that $11.40 Tier 2 rate on value above $1 million. On a Kahala-priced home, most of the assessed value is in that top tier.

When The Clock Starts

These scenarios assume the buyer will live in the home and the assessment is above the threshold. They're based on RPAD's filing-deadline table and its examples.

The second row is the easiest to miss. RPAD says a buyer who buys after the October 1 assessment date is "grandfathered" into the seller's exemption for the current tax year. That's why the public record can show the new owner's name next to an exemption that actually belongs to the seller. The buyer's first-year bill looks normal. The higher bill shows up in the second year.

The third row costs the most. A vacant house or a former rental above the threshold is already in Residential A. A buyer who records after the deadline inherits that class for nearly two tax years. RPAD's own example is exactly this case.

Why The Closing Statement Won't Catch It

At closing, property taxes are prorated using the current bill. The current bill reflects the seller's classification, so it can hide the higher bill coming in the second year.

RPAD is unusually direct about this. The office encourages buyers and their agents to check whether a home is vacant or rented, and to confirm whether it still has a home exemption or the exemption has been canceled. It calls this especially important near the September 30 deadline for homes above the Residential A threshold or already in that class. It also suggests buyers prepare for the higher taxes, or negotiate them into the sales price, escrow fees, or the tax proration at closing.

Sellers have their own deadline. An owner whose property stops qualifying for the exemption has to report it within 30 days, and no later than November 1. A $300-per-year penalty can apply if they don't.

What Changes On July 1, 2027

The rules change for tax years starting July 1, 2027, and Kahala will feel it more than most of the island.

Ordinance 25-44, passed as Bill 34 (2024) and approved October 20, 2025, raises the Residential A threshold from $1 million to $1.3 million. It also splits the class into three tiers. Tier 1 covers net taxable value up to $1,300,000. Tier 2 covers value above $1,300,000 up to $3,500,000. Tier 3 covers value above $3,500,000.

The ordinance sets the brackets but not the rates. The Council will set rates for each tier in its annual rate resolution. So nobody can yet say what a Kahala home above $3.5 million will owe in its second year. A buyer who records after today and lands in the second or third row of the table above will be paying under that unknown schedule.

The exemption amounts also go up on the same date. Ordinances 25-42 and 25-43 raise the home exemption to $140,000 for owners under 65 and $180,000 for owners 65 and older. A claim filed by today gets the larger amount. Bills 45 and 46 would raise the amounts again, to $160,000 and $200,000, starting July 1, 2028. But they are still proposals. The Council's most recent action was a second-reading vote on August 12, 2026, which sent them back to committee.

Assessments are an issue at the neighborhood level too. In August 2026, the Diamond Head Neighborhood Board voted 7-1-2 on a proposal to cap yearly increases in owner-occupied assessed values. It would have limited growth to 2% or inflation, whichever is lower. The motion failed because the board needs eight votes to take action.

Before You Write Or Accept An Offer

1. Look up the property's current exemption status and class with RPAD before you set the price. Don't rely on what the online record seems to show, because it may still list the seller's exemption.
2. Ask whether the home is owner-occupied, vacant, or rented. The answer tells you which row of the table above the purchase falls into.
3. Compare the expected recording date to September 30. Plan for recording at the Bureau of Conveyances, not just signing day.
4. If the deed will record after the deadline, estimate the second-year bill at Residential A rates. Build that cost into the price, escrow terms, or tax proration.
5. File the home exemption claim as soon as the deed records, so the next deadline doesn't slip past too.

None of this is tax or legal advice. RPAD answers classification questions at (808) 768-3799.

FAQ

Can a home held in an LLC get the exemption? No. RPAD says property held in a company such as an LLC can't receive a home exemption.

We own a Kahala home and a second home elsewhere on Oʻahu. Can each spouse claim one? No. The law allows one home exemption per married couple. Spouses living separate and apart may each receive half of one exemption on each property.

I'm relocating on military orders. Does that count toward principal residence? Being stationed in the city under U.S. military orders is one of the signs RPAD lists as evidence of intent to reside. The others include living in the home more than 270 days a year, registering to vote in the city, and filing a Hawaiʻi resident tax return.

Can I keep the exemption if I rent out part of the house? Yes, as long as you still live there as your principal residence. You'll need to file a change-of-status form by September 30.

If you're buying or selling in Kahala or Diamond Head this fall, set your closing date with the tax calendar in mind as well as the moving schedule. Eric Olson can check a property's exemption status and help you plan a recording date and proration that account for it. Let's connect.