Seller’s Desk · By Address District · · 10 min read
Is an Older House in Old Naples Worth a Quarter of a New One? Reading the 25.8 Percent Ratio, the 50 Percent Rule and a 688-Day Record Sale
Older homes are 37 of 52 sampled in ZIP code 34102 and average 25.8 percent of the new construction price, while Port Royal’s twelve-month median was $17,690,000 and the year’s top Naples waterfront sale closed at 63 percent of its first asking price.
- Old Naples
- Port Royal
- Older homes
- Flood rules
- Luxury market
Table of contents
- Key findings
- What does the 25.8 percent ratio say about an older house?
- What do Port Royal, Aqualane Shores and Olde Naples sell for?
- Who lives here, and how old are the homes?
- What does the 50 percent rule mean for an older house?
- How long does a sale take, and what does a missed first price cost?
- What does a private sale change for an Old Naples owner?
- Methodology and limitations
- Conclusion
- Frequently Asked Questions
- Sources
An owner of an older house in Old Naples, Port Royal or Aqualane Shores hears two prices. One is the neighborhood’s, a twelve-month Port Royal median of $17,690,000, by one brokerage’s count. The other is the house’s own. In Address District’s Older Home Index, the average older home in Old Naples, Port Royal and Aqualane Shores is priced at 25.8 percent of the average new home in the same ZIP code. On averages, then, the answer is roughly yes.
This brief sets that ratio beside the Census profile of ZIP code 34102, four 2026 brokerage reports, the city’s flood rules and the record of Ian, Helene and Milton. It then asks what a private sale changes.
The limits are plain. The index sample is 52 homes, most Census units are in multi-unit buildings, and the market reports are brokerage content. The brief makes no forecast and does not estimate what any home would sell for.
Key findings
- Older homes, built 1980 or earlier, are 37 of 52 sampled in 34102, or 71.2 percent, a count that ranks second of 1,192 ZIP codes nationally and of 202 in Florida. They average 25.8 percent of the new construction price, against a Florida median of 22.75 percent (Older Home Index, 2026).
- In the twelve months to September 30, 2026, Port Royal recorded 30 sales at a median of $17,690,000, Aqualane Shores 27 at $9,750,000 and Olde Naples 155 at $2,430,000 (Alpizar Real Estate, October 2026).
- The year’s top Naples waterfront sale, in Olde Naples, closed at $62,500,000, 63 percent of its original $99,000,000 asking price, after 688 days (Alpizar Real Estate, October 2026).
- Of 9,984 housing units in ZIP code 34102, 3,625 are held for seasonal or occasional use, and 51.3 percent were built before 1980 (U.S. Census Bureau, 2020-2024).
- Over 90 percent of City of Naples addresses are in the special flood hazard area, where work costing 50 percent or more of a structure’s market value counts as substantial improvement (City of Naples, 2026).
What does the 25.8 percent ratio say about an older house?
The index compares two averages inside one ZIP code, homes built 1980 or earlier and new construction. In 34102 the first is 25.8 percent of the second, so the average new house is priced at about 3.9 times the average older one. That is arithmetic, not a valuation.
The ratio sits above the Florida median of 22.75 percent. Nearby ZIP codes run higher, up to 39.4 percent in East Naples, where new homes average about 2.5 times the price of older ones.
The index does not separate land from building. One Port Royal agent puts custom construction at $600 to $1,200 or more per square foot, so a hypothetical 4,000-square-foot house would cost $2.4 million to $4.8 million to build, before land.
| ZIP code, distance | Older homes | Older share | Price ratio |
|---|---|---|---|
| 34102 Old Naples | 37 of 52 | 71.2 percent | 25.8 percent |
| 34103 Park Shore, 4.0 miles | 11 of 28 | 39.3 percent | 32.6 percent |
| 34108 Pelican Bay, 7.5 miles | 9 of 18 | 50.0 percent | 31.6 percent |
| 34112 East Naples, 3.8 miles | 3 of 15 | 20.0 percent | 39.4 percent |
| Florida | 52.6 percent | 22.75 percent median | |
| All ZIP codes | 49.0 percent | 23.1 percent median |
Table 1. Older homes and the older-to-new price ratio in 34102 and nearby ZIP codes, with nearby shares calculated from sample counts. Source, Address District Older Home Index.
Source Address District Older Home Index, 2026. Laurie Bellico, William Raveis, September 24, 2026, for construction cost.
What do Port Royal, Aqualane Shores and Olde Naples sell for?
An October brokerage report counts every neighborhood sale, on the water and off it, using Naples Area Board of Realtors (NABOR) data. It combines every property type, so its Olde Naples median includes condominiums.
| Neighborhood | Sales, 12 months | Prior 12 months | Median price | Months of supply |
|---|---|---|---|---|
| Port Royal | 30 | 27 | $17,690,000 | 7.2 |
| Aqualane Shores | 27 | 30 | $9,750,000 | 13.8 |
| Olde Naples | 155 | 139 | $2,430,000 | 9.2 |
Table 2. Sales by neighborhood, twelve months to September 30, 2026, and the twelve months before. Source, Alpizar Real Estate, October 1, 2026.
A William Raveis report on Old Naples houses over $1 million, for the year through March 2026, counted 61 closings, up 60.5 percent, while the average price fell 9.7 percent to $6,494,221. “Sellers who price to today’s data are closing,” it concludes. “Sellers who price to 2024 are still on the market.”
Port Royal adds a cost the sticker omits. An agent there writes that the Port Royal Club initiation fee rose from $315,000 to $400,000 on January 1, 2026, and that trackers put the premium for confirmed eligibility at roughly 15 to 20 percent. A seller can confirm eligibility before a buyer asks.
Source Alpizar Real Estate, October 1, 2026. Matt Brown, William Raveis, April 2026. Laurie Bellico, September 24, 2026. Brokerage content, not independently verified.
Who lives here, and how old are the homes?
The Census counts 9,984 housing units in ZIP code 34102. Of 4,483 vacant units, 3,625 are held for seasonal, recreational or occasional use and only 186 were for sale, and Census Reporter puts the median age at 65.7. The median year built is 1979, with the 1960s and 1970s together holding 4,276 units, or 42.8 percent.
The Census share built before 1980, 51.3 percent, sits below the index’s 71.2 percent because the Census counts every unit, and detached houses are only 39.8 percent of them. For a seller, most competing houses are older too, and most empty homes are held for seasonal use, not for sale.
Housing units in ZIP code 34102 by decade built
| Indicator | Value | Note |
|---|---|---|
| Housing units | 9,984 | Margin of error 517 |
| Owner occupied | 4,178 | 75.9 percent of occupied |
| Seasonal or occasional use | 3,625 | 36.3 percent of all units |
| Vacant, for sale only | 186 | 1.9 percent of all units |
| Median year built | 1979 | Margin of error 2 years |
| Median household income | $130,929 | Margin of error $19,806 |
| Median owner-estimated value | $2,000,000 or more | Top of the Census range |
Table 3. Housing indicators for ZIP code 34102. Source, U.S. Census Bureau, American Community Survey 2020-2024 five-year estimates, tables B19013, B25002, B25003, B25004, B25024, B25034, B25035 and B25077.
Source U.S. Census Bureau, via data.census.gov, and Census Reporter for median age. Shares are calculated from published counts.
What does the 50 percent rule mean for an older house?
The City of Naples says over 90 percent of its addresses are in the special flood hazard area, with added scrutiny of space below the base flood elevation. It defines substantial improvement as work costing 50 percent or more of the structure’s market value, and substantial damage as damage that would cost as much to restore. FEMA uses the labels, the city says, to judge rebuilding and major improvements.
In hypothetical arithmetic, a building valued at $900,000 apart from its land reaches the line at $450,000 of work, and one valued at $400,000 at $200,000. The less the building is worth, the smaller the budget before current flood standards apply.
The National Hurricane Center reports maximum inundation of 6 to 9 feet above ground in Naples during Ian in 2022. The National Weather Service estimated Helene’s 2024 surge at 3 to 4 feet in streets beside Naples beaches, and Milton’s at 2 to 4 feet across much of Collier County’s beach and bayfront.
Since October 1, 2025, Florida also requires a seller of residential property to disclose flood insurance claims, flood assistance and known flood damage at or before the contract, according to Florida Realtors. Rules differ by state, and this is not legal advice.
Source City of Naples floodplain guidance. National Hurricane Center, Hurricane Ian report, March 12, 2026 version. National Weather Service Miami, 2024. Florida Realtors, September 30, 2025.
How long does a sale take, and what does a missed first price cost?
The William Raveis report put average days on market for Old Naples houses over $1 million at 158, up 33.9 percent. Port Royal homes sold after an average of 170 days in the quarter ending June 2026, against 159 a year earlier, the agent there writes.
The record sale shows what a missed first price can cost. The house at 20 14th Avenue South asked $99,000,000 and closed at $62,500,000 after 688 days, about 22.6 months. The gap is $36,500,000, or 36.9 percent of the first price. That is arithmetic on one sale, not a typical house.
NABOR’s August figures for the Naples Beach area, ZIP codes 34102, 34103 and 34108, look firmer, with single-family supply down from 12.3 to 7.1 months and the median up 20.5 percent to $2,710,250. The agent who summarized them noted the year-to-date median was down 6.5 percent, “so I would not read August as appreciation.”
Owners moving within Florida face one more clock. The Collier County Property Appraiser says up to $500,000 of Save Our Homes exempt value can move to a new homestead if it is transferred within three tax years.
Source Matt Brown, April 2026. Laurie Bellico, September 24, 2026. Alpizar Real Estate, October 1, 2026. Renee Hahn, September 26, 2026, summarizing NABOR. Collier County Property Appraiser.
What does a private sale change for an Old Naples owner?
A direct sale to a buyer who purchases homes off the market changes several things. There is no listing and there are no showings or open houses. The owner does no repairs, staging or deep cleaning, so an older house is not renovated against the 50 percent line before it sells. The owner chooses the closing date, weeks or months out. A person on the team reviews the house and may ask to see it, the offer comes in writing with no obligation, the seller is told in writing who the buyer is, and there is no commission.
That last point needs no assumed rate. Each 1 percent of price not paid in commission is $24,300 at the Olde Naples median and $176,900 at the Port Royal median. An owner can set the actual rate against a private offer and compare net proceeds.
The trade-off is the usual one. A public listing can draw competing bids, and with Old Naples closings over $1 million up 60.5 percent in the year to March, a well-priced house may do well in public. A private sale draws one offer. The choice belongs to the owner.
Source Calculation from the medians in Table 2. No commission rate or closing cost is assumed.
Methodology and limitations
Older home figures come from the Address District Older Home Index, which counts homes built 1980 or earlier and compares average prices within a ZIP code. Census figures are American Community Survey 2020-2024 five-year estimates for ZIP code tabulation area 34102, with margins of error and a year-built break at 1980, one year off the index definition.
The brokerage sources cover different areas and periods and were not independently verified. Flood, disclosure and homestead rules are summarized from public pages and differ by state. The brief makes no forecast and does not estimate what any home would sell for.
Conclusion
The record supports a short list of conclusions. Older homes are most of the sampled stock and average about a quarter of the new price. Medians run from $2,430,000 to $17,690,000, average time on market at the top ran past five months, and in the flood hazard area, work costing half a building’s market value or more must meet current flood standards.
It does not support a price for any one house, or a forecast. The choice between a listing and a private sale turns on how an owner weighs competing bids against privacy, a chosen date, no repairs and no commission.
Frequently Asked Questions
Is my older house worth 25.8 percent of a new one?
Not necessarily. The figure compares average prices in the index sample for 34102 and does not value any single house.
Why is the Census median value $2,000,000 or more?
The Census Bureau’s value ranges top out there, and the 34102 median falls in the top range.
What is the 50 percent rule?
Under City of Naples floodplain rules, work or repairs costing 50 percent or more of a structure’s market value bring current flood standards into play.
Does a private sale always beat a public listing?
No. A listing can draw competing bids and sometimes a higher price. A private sale trades that for privacy, no repairs, no commission and a chosen closing date.
Sources
- Address District, 2026. Older Home Index. /older-home-index.html
- Alpizar Real Estate, October 1, 2026. Naples Waterfront Market, September 2026, Every Neighborhood. https://www.alpizarrealestate.com/blog/naples-waterfront-market-september-2026.html
- Renee Hahn, September 26, 2026. 08/2026 Month End Naples Real Estate Market Update. https://www.yournaplesexpert.com/post/08-2026-month-end-naples-real-estate-market-update
- Matt Brown, William Raveis Real Estate, April 2026. Old Naples Real Estate Market Report, April 2026. https://www.mattbrownrealestate.com/blog/old-naples-real-estate-newsletter-april-2026/
- Laurie Bellico, William Raveis Real Estate, September 24, 2026. In Port Royal, the House Is Almost Beside the Point. https://lauriebellico.com/blog/in-port-royal-the-house-is-almost-beside-the-point
- U.S. Census Bureau, accessed October 5, 2026. American Community Survey 2020-2024 five-year estimates, ZCTA 34102, tables B19013, B25002, B25003, B25004, B25024, B25034, B25035 and B25077. https://data.census.gov/table/ACSDT5Y2024.B25034?g=860XX00US34102
- Census Reporter, accessed October 5, 2026. 34102 profile, ACS 2024 five-year. https://censusreporter.org/profiles/86000US34102-34102/
- City of Naples, accessed October 5, 2026. Flood Mitigation Guidelines and Regulations for Property Owners. https://www.naplesgov.com/building/page/flood-mitigation-guidelines-regulations-property-owners
- National Hurricane Center, March 12, 2026. Tropical Cyclone Report, Hurricane Ian (AL092022). https://www.nhc.noaa.gov/data/tcr/AL092022_Ian.pdf
- National Weather Service Miami, October 2, 2024. County Impacts Associated with Helene (2024). https://www.weather.gov/media/mfl/TropicalEventSummary/PSHMFL_2024AL09_Helene_ImpactNarratives(1).pdf
- National Weather Service Miami, October 25, 2024. County Impacts Associated with Milton (2024). https://www.weather.gov/media/mfl/TropicalEventSummary/PSHMFL_2024AL14_Milton_ImpactNarratives.pdf
- Florida Realtors, September 30, 2025. Florida Expands Flood Disclosures. https://www.floridarealtors.org/news-media/news-articles/2025/09/florida-expands-flood-disclosures
- Collier County Property Appraiser, accessed October 5, 2026. Portability Questions. https://www.collierappraiser.com/Main_Homestead/FAQonPortability.html
Figures retrieved October 5, 2026. This brief is general information, not legal, tax or financial advice. Photographs are illustrative.
