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Pinellas County

Dunedin ADUs and In-Law Suites for a Parent

In Dunedin a cottage or suite for a parent is exactly what the ADU code was written for, since the code states its purpose as housing for older residents of modest income. It allows one ADU of up to 800 square feet on any single-family lot, attached or detached, with the owner living in one of the two units.

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62The age at least one parent or grandparent must have reached for the living quarters reduction in Florida Statute 193.703
50%Of a structure's market value, the cost at which 44 CFR 59.1 makes an addition a substantial improvement
16 townsCovered across Hillsborough, Pinellas and Pasco counties, each with its own local rules set out on its page
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Request a quote in Dunedin

Who the space is for, whether it needs a kitchen, and the address. With those three answers we can say which city or county rules govern the lot before a contractor draws anything.

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Five short questions about who the space is for and what it needs to hold, then where to reach you. Most people finish in about a minute.

Question 1What are you thinking of building?

Pick the closest. If you are not sure yet, that is exactly what we help sort out.

Question 2Who will live in it?

This matters more than it sounds. In Florida the answer can change the property tax on what you build.

Question 3Does the new space need its own kitchen?

In Florida law a space with its own kitchen, bathroom and bedroom is a second dwelling, and each city and county decides whether one is allowed on your lot.

Question 4Is the house in a flood zone?

In a flood zone, a large enough addition can mean the whole house has to meet today's flood rules. Your insurance declarations page or the county flood map will say.

Question 5When does the space need to be ready?
About you, and the house the space would join

Who should we ask for?

How can we reach you?

We call to confirm the details before anyone is sent out.

Where is the property?

The contractor match is by property, not by person, so the street line matters.

Anything else we should know?

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Planning

Dunedin's shared meters, three occupants and recorded affidavit

Dunedin issues its own permits, and its ADU rules come with three conditions to design around. The unit shares the main home's utilities, because a separately metered connection is not allowed. No more than three people may live in it, two of them immediate family. And the owner must occupy one of the units as a homesteaded residence, under a notarized affidavit that is recorded. The city's median age is 58.0, with 40.8 percent of residents aged 62 or older. Dunedin's NFIP record carries 1,601 claims, 791 of them in 2024, so the parcel's flood zone and the structure value on the Property Appraiser's FEMA letter come before the footprint. As a city homestead, a Dunedin home is outside the county's parent or grandparent reduction.

A quiet Tampa Bay street of single-story ranch houses near a canal
Next Step

Will the Dunedin suite be attached or out back?

Either is allowed on a single-family lot. Tell us which you are leaning toward and we will tell you what the flood zone and the 800 square feet do to that choice.

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Availability

Attached suites and backyard units arranged in Dunedin

In-Law Suite Additions

Add a bedroom, a bathroom and a sitting room onto the house so a parent can live with you and still close a door of their own, planned so the kitchen decision does not turn it into a second dwelling by accident.

In-Law Suites in Dunedin →

First-Floor Primary Suite Additions

Put a bedroom and a bathroom on the ground floor for someone who can no longer manage the stairs, without the addition pulling the whole house under current flood rules.

First-Floor Suites in Dunedin →

Detached ADUs and Backyard Cottages

Put a small, separate home in the backyard for a parent, close enough to help and far enough for their own front door, under the rules that actually govern the lot.

Detached ADUs in Dunedin →
Licensed and insured Florida contractorsVetted local contractors licensed by the State of Florida and insured for the work, who price and contract it themselves
The three rules checked for your addressThe kitchen, the flood line and the county tax rule looked at before any contractor is asked for a number
Told when an addition is not the answerIf a first-floor room or a bathroom change inside the house would do, you hear that before anyone draws a suite
Local Detail

Dunedin's elderly-housing ADU code and flood record

A wide doorway with no threshold and a lever door handle

Dunedin's ADU code (Sec. 107-21) states its purpose as small dwellings to meet the housing needs of elderly persons of modest income. It permits one ADU of up to 800 square feet on any single-family lot, attached or detached, prohibits a separate metered utility connection, limits occupants to three (two of immediate family relation), and requires the owner to occupy either unit as a homesteaded residence under a recorded notarized affidavit.

Source: City of Dunedin (Municode), accessed 2026-09-23

The 2020-2024 American Community Survey estimates Dunedin's median age at 58.0, with 35.3 percent of residents aged 65 or older and 40.8 percent aged 62 or older, compared with 26.4 percent aged 65 or older in Pinellas County. Of its 21,305 housing units, 61.2 percent were built before 1980 and 12.0 percent in 2000 or later.

Source: U.S. Census Bureau, American Community Survey, accessed 2026-09-23

OpenFEMA's redacted NFIP claims data (as of September 2026) records, by NFIP community, with records beginning in 1978: St. Petersburg 16,189 claims (8,670 in 2024, $1,266.6 million paid in total); Clearwater 2,951 claims (1,472 in 2024, $231.5 million paid in total); Dunedin 1,601 claims (791 in 2024, $123.0 million paid in total); Tarpon Springs 1,415 claims (717 in 2024, $56.3 million paid in total); Largo 781 claims (497 in 2024, $78.6 million paid in total); Pinellas Park 895 claims (228 in 2024, $15.9 million paid in total); Oldsmar 776 claims (454 in 2024, $40.5 million paid in total); Seminole 223 claims (180 in 2024, $13.9 million paid in total); Safety Harbor 147 claims (61 in 2024, $5.2 million paid in total).

Source: Federal Emergency Management Agency (OpenFEMA), accessed 2026-09-23

The Pinellas County Property Appraiser publishes a FEMA/WLM letter for each parcel, reached from the Quick Pick Tool box on the parcel page, showing the structure value used for 50 percent or 49 percent determinations.

Source: Pinellas County Property Appraiser, accessed 2026-09-23

Because the Pinellas County parent or grandparent reduction requires the property to be in unincorporated Pinellas County, homesteads inside St. Petersburg, Clearwater, Largo, Pinellas Park, Dunedin, Seminole, Safety Harbor, Tarpon Springs and Oldsmar do not qualify under the county program as the Property Appraiser describes it.

Source: Pinellas County Property Appraiser, accessed 2026-09-23

Next Step

Start the Dunedin cottage with the affidavit in view

Tell us whose name is on the homestead and who is moving in. We match you with a licensed contractor and flag the recorded owner-occupancy step early.

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