Florida HB 399.
What property owners should know.

Planning & permits · Florida residential development

Planning a residential project in Florida often involves more than obtaining a building permit. Depending on the property and the proposed work, an owner may also need zoning approval, subdivision approval, site plan approval, a variance, or another type of land development authorization.

Florida House Bill 399, enacted as Chapter 2026 7, Laws of Florida, changes how local governments must evaluate certain residential projects when compatibility with surrounding properties becomes an issue.

Beginning January 1, 2027, local governments must use identifiable compatibility factors, identify specific incompatibilities before recommending denial, and consider whether reasonable mitigation measures could address those concerns. General statements about “community character” or “neighborhood feel” are not enough by themselves to support a compatibility based denial. (Laws of Florida)

The law does not eliminate zoning or guarantee approval. It creates a more structured process for identifying problems and determining whether practical design changes can solve them.

What Does “Compatibility” Mean in Residential Development?

Compatibility generally concerns whether a proposed residential use or development can coexist appropriately with surrounding residential properties.

A compatibility review may consider issues such as:

• Building height and massing
• Setbacks and lot coverage
• Privacy between neighboring properties
• Landscaping and screening
• Vehicle access and parking
• Exterior lighting
• Noise generating equipment
• Drainage and stormwater effects
• Architectural transitions
• The orientation of buildings and outdoor areas

The relevant standards vary by municipality, zoning district, future land use designation, and project type.

HB 399 does not replace those local standards. Instead, it requires local governments to explain which compatibility issues apply and why proposed solutions are insufficient when compatibility is used as a reason for denial.

Does HB 399 Apply to Every Home Addition or Renovation?

No.

A normal kitchen renovation, bathroom remodel, roof replacement, interior build out, or code compliant addition may require only building permits and routine zoning review. HB 399’s new compatibility procedure specifically addresses applications for:

• Rezoning
• Subdivision approval
• Site plan approval

The application must also be reviewed on compatibility grounds within a residential zoning district and residential future land use category. (Laws of Florida)

The law may be relevant when a property owner is:

• Dividing one residential parcel into multiple lots
• Requesting a residential rezoning
• Developing multiple homes
• Pursuing a project that requires formal site plan approval
• Redeveloping residential property at a different scale
• Responding to an objection that a proposed residential project is incompatible with surrounding homes

A standard by right addition may not trigger these procedures. Property owners should first identify exactly which approvals their project requires.

What HB 399 Changes

Local governments must identify compatibility factors

Local comprehensive plans and land development regulations must include factors for assessing the compatibility of allowable residential uses within a residential zoning district and future land use category.

Land development regulations must also include measures for mitigating or minimizing potential incompatibility. (Laws of Florida)

This is important because it moves the discussion away from broad objections and toward identifiable project conditions.

Staff must identify specific concerns before recommending denial

Before local government staff recommends denial of a rezoning, subdivision, or site plan application on compatibility grounds, staff must identify each area of incompatibility with specificity.

Staff may also recommend mitigation measures to the applicant.

Instead of receiving a general statement that a project “does not fit,” an applicant should receive a clearer explanation of the actual concern.

Property owners can propose mitigation measures

An owner or project team may respond with changes intended to reduce or eliminate the identified conflict.

When an applicant proposes mitigation, a local government may not deny the application on compatibility grounds unless the written denial concludes that:

1. The proposed mitigation is inadequate; and
2. Feasible mitigation measures do not exist.

The written denial must identify the incompatibility, the standards being applied, and why the available solutions are insufficient. (Laws of Florida)

“Neighborhood feel” is not enough by itself

HB 399 specifically provides that references to “community character” or “neighborhood feel” are not sufficient, by themselves, to support a compatibility based denial.

That does not prevent neighbors or local officials from raising legitimate concerns. It means those concerns must be connected to actual compatibility issues and applicable standards. (Laws of Florida)

Turning a Compatibility Concern Into an Objective Solution

A strong response should convert each concern into three parts:

1. The specific issue
2. The proposed mitigation
3. The drawing, report, or condition demonstrating the solution

The following examples are not guaranteed approval measures, but they illustrate how a project team can approach compatibility concerns constructively.

The goal is not simply to disagree with the reviewing authority. The goal is to create a documented record showing how each stated concern has been addressed.

A Practical Planning Process for Property Owners

1. Confirm the property’s zoning and future land use

Zoning and future land use are not the same thing. Both can affect what may be constructed and which approval process applies.

Confirm:

• Current zoning district
• Future land use category
• Permitted residential uses
• Maximum density
• Minimum lot dimensions
• Setbacks
• Height
• Lot coverage
• Parking requirements
• Any overlay or special district

2. Determine which approvals are required

Ask the municipality whether the project requires:

• Building permits only
• Administrative zoning review
• Variance
• Rezoning
• Subdivision or plat approval
• Site plan approval
• Historic review
• Environmental approval
• Development review committee approval

This determines whether HB 399’s compatibility procedures are likely to be relevant.

3. Obtain a current survey

A current boundary and topographic survey may identify issues involving:

• Property lines
• Easements
• Encroachments
• Existing structures
• Finished floor elevations
• Flood zone information
• Utilities
• Rights of way
• Trees
• Drainage conditions

Beginning design without accurate property information can lead to expensive revisions.

4. Prepare a zoning and compatibility matrix

A simple matrix can list every applicable requirement and show how the project complies.

Useful headings include:

• Code section
• Required standard
• Proposed condition
• Compliance status
• Drawing reference
• Required mitigation

This makes the application easier for staff to review and reduces misunderstandings.

5. Request a pre application meeting

For a complicated project, meet with planning, zoning, engineering, fire, utilities, and building officials before finalizing the design.

Ask staff to identify:

• Required approvals
• Known compatibility concerns
• Required studies
• Applicable design standards
• Likely conditions
• Submission deadlines
• Public hearing requirements

Document the meeting and incorporate the feedback into the project.

6. Respond to concerns with revised documents

A statement promising to “work with the neighbors” is usually less effective than an actual revised plan.

When possible, submit:

• Revised site plans
• Architectural elevations
• Landscape and screening plans
• Drainage calculations
• Traffic or parking exhibits
• Shadow or privacy studies
• Written response matrices
• Photographs and context diagrams

What HB 399 Does Not Change

HB 399 does not eliminate the requirement to comply with:

• The local comprehensive plan
• Zoning regulations
• Land development regulations
• The Florida Building Code
• Structural and wind load requirements
• Floodplain regulations
• Stormwater and drainage standards
• Fire and life safety requirements
• Environmental regulations
• Utility requirements
• Building permits and inspections

The statute expressly states that its compatibility provisions do not require approval of an application that is otherwise inconsistent with the applicable comprehensive plan or land development regulations. A local government may also place reasonable conditions on an approval to mitigate compatibility concerns. (Laws of Florida)

Important Exceptions

The new compatibility subsection does not apply to:

• Compatibility between uses located in different future land use categories, including commercial, industrial, mixed use, agricultural, rural, conservation and open space categories
• Development applications within planned unit developments or master planned communities
• Applications within historic districts designated before January 1, 2026

These exceptions can be significant. A project should be reviewed individually before assuming HB 399 applies. (Laws of Florida)

Does HB 399 Override an HOA?

HB 399 regulates local government land use and development review. It does not amend private homeowners’ association declarations, architectural control requirements, deed restrictions, or private covenants.

A project may satisfy municipal zoning requirements and still require separate HOA approval. Property owners should review both processes before committing to a design or construction contract.

Other HB 399 Provisions Property Owners Should Know

HB 399 also creates greater parity for certain off site constructed residential dwellings.

Beginning January 1, 2027, qualifying off site constructed homes must generally be permitted in zoning districts where single family detached homes are allowed. Local governments may continue applying architectural, setback, height, bulk and design requirements, but those standards must be applied uniformly and may not exclude a home solely because all or part of it was constructed off site. (Laws of Florida)

This may create additional options for modular and factory built residential construction, although all applicable building, foundation, wind, flood, utility and site development requirements still apply.

Frequently Asked Questions

Does HB 399 guarantee approval of my project?

No. The project must still comply with the applicable comprehensive plan and land development regulations. The law creates a clearer compatibility review process; it does not create automatic approval.

Can neighbors still oppose a project?

Yes. Public participation and legally relevant objections may still be considered. However, a compatibility based denial must identify specific concerns and applicable standards rather than rely only on generalized statements.

Can a city require changes to my design?

Yes. A local government may approve an application with conditions intended to mitigate or minimize compatibility concerns.

Does the law apply to commercial development?

The compatibility provision discussed in this guide applies to allowable residential uses within residential zoning districts and residential future land use categories. It is not a general compatibility rule for every commercial or industrial project.

When do the residential compatibility changes take effect?

January 1, 2027. HB 399 became law on March 27, 2026, but several of its principal fee, compatibility and off site housing provisions have a later effective date. (Laws of Florida)

Final Takeaway

HB 399 does not remove the need for careful planning. It provides property owners with a more structured opportunity to understand compatibility concerns and respond with practical, documented solutions.

The most successful applications will still begin with accurate property information, a clear understanding of local regulations, coordinated professional plans and a willingness to address legitimate impacts before they become reasons for delay.

Planning a residential project in South Florida? RIDIS helps property owners evaluate project requirements, organize preconstruction information and identify potential permitting or constructability issues before work begins.

Informational Notice

This guide provides general educational information and is not legal, zoning, engineering or architectural advice. Requirements vary by jurisdiction and property. Owners should consult the applicable local government and qualified professionals before making development or construction decisions.

Official sources and further reading

• Chapter 2026 7, Laws of Florida
• Florida Senate HB 399 bill page
• Florida Senate HB 399 summary
• Florida House final bill analysis

This guide is general educational information and is not legal, zoning, architectural, or engineering advice. Project requirements depend on the property, application type, adopted local regulations, and reviewing jurisdiction.