Brevard County · Census-designated place

Roofing in Port St. John, Florida

The median Port St. John home was built in 1989, and many of these roofs are likely past 25 years old. That matters because Citizens Property Insurance asks for proof of five more years of life on shingle roofs older than 25 years. Roof permits here come from Brevard County, since the town is an unincorporated place.

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Updated October 2026

Front of a single-story brick home with a dark shingle hip roof, a white garage door, two small palms in the front bed and a blue sky with a streak of sun glare.

At a glance

Port St. John homes at a glance

People (2020 Census): 23,474
Median year homes were built: 1989
Share of homes built before 1980: 10.6%
Share of homes built 2010 or later: 1.9%
Owner-occupied share of occupied homes: 94.3%

Census figures; each one is listed in the sources at the end of this page.

Housing age

How old are Port St. John roofs?

The median build year here is 1989, one year later than the county's 1988. Only 1.9 percent of homes went up in 2010 or later, against 10.9 percent countywide. That is a gap of 9 percentage points. Few roofs in town are young.

About 92.9 percent of the 10,351 housing units are single-family detached homes, and 94.3 percent of occupied homes are owner-occupied. Most roof decisions here belong to the person who lives under the roof. Only 10.6 percent of homes predate 1980, so very old roofing is rare. A 1989 home has likely had at least one reroof already.

Mobile homes are 1 percent of housing units in Port St. John, while the county figure is 7.2 percent. Mobile home roofing is a small part of the local picture.

Permits

Who issues your roofing permit here

Port St. John is an unincorporated census-designated place, so the Brevard County building office issues your roof permit. The county checked page lists Planning & Development, Building Permits as the place to apply. Brevard also publishes address-level wind speed maps for permitting, so look up your own address.

Unless work begins within 6 months of issue, or pauses for 6 months at any point, your permit is no longer valid. If nobody actively pursues it within 180 days of filing, the application is considered abandoned. Plan your start date with those clocks in mind.

Many Port St. John homeowners still have older roofs, so the 25 percent rule comes up often. Under Florida Building Code section 1511.1.1, repairing more than 25 percent of a roof section in 12 months can require replacing the whole section. Roofs that already complied with the 2007 code or a later edition are excused from this requirement. Ask the county which side of that exception your roof falls on.

Building permits

Brevard County Planning & Development, Building Permits

Official building page

Office names and links only. Fees, forms and timing change; check the official page.

Roof age

Insurer age rules for 1989-era roofs

For shingle roofs more than 25 years old, Citizens Property Insurance wants proof of at least five years of remaining useful life. For tile, slate, clay, concrete or metal, the age line is 50 years. A shingle roof from the original 1989 build would be well past 25 years. What your policy demands is up to your insurer or agent, so put the question to them yourself.

The contractor you hire must hold a roofing contractor credential. Florida law bars general, building or residential contractors certified after 1973 from advertising as roofers without it. Check the state license lookup before you sign anything.

Record a Notice of Commencement and post it on site before the first inspection takes place. According to the permit card, bypassing this step could leave you paying for the same work a second time. Ask the county office what it needs from you.

1.0% of housing units are mobile homes.

Local weather

Storms and rain on Port St. John roofs

Hurricane Irma damaged over 7,132 homes in Brevard County, and eight tornadoes touched the county, including EF-1s at Rockledge and an EF-2 in Mims. Hurricane Matthew in 2016 brought a peak gust of 81 mph at Merritt Island, with damage mostly to shingles and soffits.

A 10-year, 1-hour storm here drops 3.01 inches of rain, and the 100-year 24-hour depth is 13 inches. Nearby Titusville averages 55.20 inches of rain a year, with 41 percent falling from June through August. Roof flashing and drainage take their hardest use in that stretch.

Services

Roofing services in Port St. John

Questions

Port St. John roofing questions

What is the 25% roof rule in Florida?

If you repair, replace or recover more than 25 percent of a roof section within 12 months, the whole section must be replaced or recovered under Florida Building Code section 1511.1.1. Roofs built or replaced under the 2007 code or any later version fall outside this requirement. With a median build year of 1989 in Port St. John, many roofs may not qualify for it. Confirm the status of your roof with the Brevard County building office.

Source: 2023 Florida Building Code, Building, 8th ed., Chapter 15 (UpCodes viewer, unofficial transcription), read Oct 5, 2026

Related: Roof replacement

Who pulls roof permits in Port St. John?

Brevard County Planning & Development, Building Permits issues them, because Port St. John is an unincorporated census-designated place. The county office page was checked and verified. Brevard also publishes address-level wind speed maps by risk category for permitting. Look up your address there before you plan the job, and confirm current requirements with the office.

Source: Brevard County Planning & Development, Building Permits, read Oct 5, 2026

Related: Roof replacement

Will my 1989 roof trigger an insurer review?

It may. The median Port St. John home was built in 1989, and Citizens Property Insurance requires documentation of at least five years of remaining useful life for roofs older than 25 years if they are shingle. Metal and tile roofs get a 50-year line. Your own insurer or agent sets the terms of your policy, so ask them what they need.

Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (acs2024_5yr), via Census Reporter API, table B25035, read Oct 5, 2026

Related: Roof inspections

How long does a Florida roof permit stay valid?

Your permit lapses if work fails to begin within 6 months of issue, or if it is halted or dropped for 6 months. A project stays active so long as an approved inspection has been logged on the permit within the past 180 days. Should 180 days pass after filing without good-faith effort, the application is deemed abandoned. For a Port St. John job, the Brevard County building office can tell you whether an extension applies.

Source: 2023 Florida Building Code, Building, 8th ed., Chapter 1 (UpCodes viewer, unofficial transcription), read Oct 5, 2026

Related: Roof replacement

Do Port St. John roofs face heavy rain?

Yes, in summer especially. Titusville, in the same county, averages 55.20 inches a year, and 41 percent of that falls from June through August. NOAA Atlas 14 puts a 10-year, 1-hour storm at Port St. John at 3.01 inches of rain. Check flashing, valleys and drainage before June.

Source: NOAA NCEI, U.S. Climate Normals 1991-2020 (annual/seasonal), access-data API, read Oct 5, 2026

Related: Roof repair

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Roofing in Port St. John, Florida

Port St. John homes at a glance

Roofing services in Port St. John

What is the 25% roof rule in Florida?

Who pulls roof permits in Port St. John?

Will my 1989 roof trigger an insurer review?

How long does a Florida roof permit stay valid?

Do Port St. John roofs face heavy rain?

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