Is there a property tax break for adding a granny flat in Brevard County, FL?

Yes. Brevard County homestead owners who build living quarters for a parent or grandparent age 62 or older can apply for an assessment reduction under Florida law, filed with the Space Coast property appraiser by March 1.

More families moving to the Space Coast are bringing a parent along, or planning to within a few years. Sometimes that means buying a house with an in-law suite. Other times it means adding one: converting a garage, building an addition, or putting up a separate cottage behind the main house in Melbourne, Viera or Merritt Island.

If you go the construction route, Florida has a little-known provision that can keep part of that new value off your tax bill. Here is how the granny flat assessment reduction works in Brevard County, who qualifies, and what the Brevard County Property Appraiser asks for.

What is the Florida granny flat assessment reduction?

The provision is Section 193.703, Florida Statutes, titled "Reduction in assessment for living quarters of parents or grandparents." It lets a county reduce the assessed value of homestead property that results from construction or reconstruction done to provide living quarters for one or more natural or adoptive parents or grandparents of the owner or the owner's spouse, as long as at least one of them is at least 62 years old.

The statute says a county "may" provide the reduction. In Brevard County, the property appraiser publishes an application for it: Form CSC_11, "Application for Assessment Reduction of New Construction for Parent(s) or Grandparent(s) Quarters." The current version on the Brevard County Property Appraiser's website is for tax year 2027.

Who qualifies in Brevard County?

Based on the statute and the BCPAO form, these are the main requirements:

  • Existing homestead: the owner must already have a homestead exemption on the property where the quarters are built.
  • Family relationship: the person living in the quarters must be a parent or grandparent. The statute covers parents and grandparents of the owner or the owner's spouse.
  • Age 62 or older: at least one qualifying occupant must be 62. The BCPAO form says the occupant must be 62 by January 1 of the year the reduction is requested.
  • Permanent residence: the occupant must permanently live on the property on or before January 1 of that year, and cannot receive benefits requiring permanent residency on property in any other county.
  • Permitted construction: the work must be properly permitted, comply with local land development regulations, and be substantially complete before January 1.

How much value can be excluded?

The statute caps the excluded value at the lesser of two numbers:

Cap option What it means
(a) The increase in assessed value The added value that resulted from the construction or reconstruction
(b) 20 percent of total assessed value Twenty percent of the total assessed value of the property as improved

Here is a simple hypothetical to show the math, not a real property. Say your homestead was assessed at $310,000 and a permitted in-law addition raises the assessed value by $90,000, to $400,000. Twenty percent of $400,000 is $80,000. Since $80,000 is less than $90,000, the excluded value would be capped at $80,000. Your actual numbers come from the Brevard County Property Appraiser.

The statute also limits the reduction to construction or reconstruction done to an existing homestead after the law took effect, and only for tax years when at least one qualifying parent or grandparent keeps his or her primary residence in those quarters.

When and how do you apply?

The BCPAO form says the application must be filed with the Brevard County Property Appraiser annually, on or before March 1 of each year. With the application, the form asks for copies of permits, the certificate of occupancy and plans, plus proof of residence for the occupants. Owners and occupants sign under penalties of perjury.

Florida law allows a county to waive the annual application after the first approval, but a new application is required if the property is sold, ownership changes, or the use changes. Follow whatever the current BCPAO form says for your tax year.

What if your parent moves out?

Section 193.703 requires the owner to notify the property appraiser when the property no longer qualifies. At that point, the previously excluded value of the improvements is added back to the assessed value.

Do not skip that step. If the property appraiser finds that a reduction was granted to someone who was not entitled to it in any of the previous 10 years, the statute allows a tax lien for the exempted taxes plus a penalty of 50 percent of the unpaid taxes for each year and 15 percent interest per year.

What should you check before building on the Space Coast?

The tax break only works if the construction itself is allowed and permitted. Before you hire anyone:

  • Confirm what your zoning allows. Rules for guest houses, accessory units and additions vary between unincorporated Brevard County and each city. My guide to accessory dwelling units in Brevard County is a good starting point.
  • Check HOA restrictions. If your Space Coast house is in an HOA, read the declaration and architectural review rules before you design anything, since associations can control additions and detached structures.
  • Pull permits and keep every document. You will need the permits, plans and certificate of occupancy for the BCPAO application.
  • Compare build vs buy. Sometimes buying a house that already has a suite makes more sense. My post on multigenerational home floor plans on the Space Coast covers what to look for.

Keep in mind that the reduction applies to new construction or reconstruction done to an existing homestead. Buying a house that already has an in-law suite is a different situation, so ask the property appraiser how it applies before you count on it.

FAQ: Granny Flat Tax Reduction in Brevard County, FL

Does my parent have to be 65 for the Brevard County granny flat reduction?

No. Section 193.703 requires at least one of the parents or grandparents to be at least 62. The BCPAO form says the occupant must be 62 by January 1 of the year the reduction is requested.

Is the deadline really March 1 every year?

The current Brevard County form says the application must be filed annually on or before March 1. Check the form for your tax year, since the county can waive the annual filing after an initial approval.

Can I get the reduction without a building permit?

No. The BCPAO form requires the construction to be properly permitted and asks for copies of permits, the certificate of occupancy and plans.

If bringing a parent to the Space Coast is part of your plan, we can help you find a house in Brevard County that already works for two generations, or one with room to build. My partner Nichole and I got your back. Reach out anytime at (321) 212-7676 or www.livingspacecoast.com.