Florida HB 399.
A practical project guide.

Development planning · Entitlements · Construction

Florida HB 399, enacted as Chapter 2026 7, Laws of Florida, introduces several important changes to local land development review.

For developers, builders and general contractors, the most relevant provisions concern:

• Residential compatibility determinations
• Development permit and development order application fees
• Mitigation before compatibility based denial
• Written findings supporting denial
• Regulatory parity for off site constructed residential dwellings

Most of these provisions take effect January 1, 2027. (Laws of Florida)

The law does not remove local zoning authority or guarantee entitlement approval. Its practical value is that it creates a more defined process for reviewing certain residential applications and responding to compatibility concerns.

The Central Change: A More Specific Compatibility Review

HB 399 adds subsection 163.3194(7), Florida Statutes.

Under the new provision, local government comprehensive plans and land development regulations must include factors for assessing compatibility among allowable residential uses within a residential zoning district and future land use category.

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

This is important for residential projects that may be technically allowable but face opposition based on scale, design, access, privacy, density transitions or similar concerns.

Which Applications Are Covered?

The procedural protections apply when local government staff is considering a compatibility based denial of an application for:

• Rezoning
• Subdivision approval
• Site plan approval

The project must involve allowable residential uses within a residential zoning district and residential future land use category.

The provision does not apply to:

• Compatibility between uses in different future land use categories
• Planned unit developments
• Master planned communities
• Historic districts designated before January 1, 2026

It also does not require approval of a project that is inconsistent with the applicable comprehensive plan or land development regulations. (Laws of Florida)

Developers should determine applicability at the beginning of due diligence rather than waiting until staff issues a recommendation.

What Local Government Staff Must Do

Before recommending denial on compatibility grounds, staff must identify each area of incompatibility with specificity.

Staff may recommend mitigation measures to the applicant.

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

• The proposed mitigation measures are inadequate; and
• Feasible mitigation measures do not exist.

A compatibility based denial must also specify:

• The areas of incompatibility
• The applicable standards
• Mitigation measures considered and declined by the applicant
• Or the basis for determining that feasible mitigation does not exist

References to “community character” or “neighborhood feel” are not sufficient, by themselves, to support denial. (Laws of Florida)

What This Means for the Entitlement Strategy

The strongest applications will not merely assert that a project is compatible. They will demonstrate compatibility through measurable plans, exhibits and written analysis.

A complete entitlement package should clearly answer:

1. What standards apply?
2. How does the original design comply?
3. What potential compatibility concerns remain?
4. What mitigation is proposed?
5. Where is that mitigation shown in the plans?
6. What evidence supports the proposed solution?

The statute creates an opportunity to establish this record before a denial recommendation reaches a hearing body.

Build a Compatibility Compliance Matrix

A compatibility matrix can function as the central management document for the entitlement team.

Recommended columns include:

The matrix should be updated after every pre application meeting, development review committee meeting and formal comment cycle.

Practical Mitigation Measures

Mitigation should be project specific. Common approaches include:

Building mass and height

• Upper floor stepbacks
• Reduced wall lengths
• Roofline transitions
• Relocated building volume
• Increased separation
• Lower building sections near adjacent homes

Privacy

• Reoriented windows
• Higher windowsills
• Obscured glazing
• Landscape screening
• Walls or fences
• Relocated balconies and outdoor living areas

Access and traffic

• Revised driveway placement
• Shared access design
• Additional stacking
• Internal circulation changes
• Turn lane or sight distance improvements
• Construction traffic management plans

Noise and operations

• Relocation of mechanical equipment
• Acoustic barriers
• Restricted loading or operating hours
• Generator and equipment screening
• Enclosed service areas

Lighting

• Full cutoff fixtures
• Lower fixture heights
• Reduced illumination at property lines
• Timers and controls
• Revised pole locations

Drainage

• Revised grading
• Perimeter swales
• On site retention
• Exfiltration systems
• Raised finished floor elevations
• Additional stormwater calculations

Landscape and visual transitions

• Wider buffers
• Layered planting
• Preserved mature trees
• Masonry walls
• Berms
• Enhanced streetscape treatment

Every mitigation measure should appear in a controlling document. A promise made in a meeting but omitted from the plans may be difficult to enforce or rely upon later.

A Recommended Pre Application Workflow

Step 1: Classify the approval path

Determine whether the project requires:

• By right administrative approval
• Rezoning
• Future land use amendment
• Subdivision or plat approval
• Site plan approval
• Variance
• Conditional use or special exception
• Development agreement
• Building permit only

HB 399 does not apply equally to every approval type.

Step 2: Confirm future land use and zoning

Document:

• Future land use designation
• Zoning district
• Permitted and conditional uses
• Density
• Intensity
• Height
• Setbacks
• Open space requirements
• Parking
• Access
• Landscape requirements
• Applicable overlays

The compatibility provision does not excuse inconsistency with the comprehensive plan or land development regulations.

Step 3: Evaluate the surrounding context

The entitlement team should map:

• Adjacent zoning
• Adjacent future land use
• Existing building heights
• Existing setbacks
• Home orientations
• Driveways
• Windows and outdoor areas
• Drainage patterns
• Trees and buffers
• Nearby development approvals

This information allows the design team to anticipate compatibility concerns before staff raises them.

Step 4: Hold a documented pre application meeting

Request specific feedback regarding:

• Each potential compatibility issue
• The applicable standard
• Studies or exhibits expected
• Mitigation staff would consider
• Conditions likely to be requested
• Review sequence and hearing requirements

Meeting notes should be circulated promptly and incorporated into the project record.

Step 5: Submit a complete response package

Each comment response should:

• Quote or summarize the comment
• Identify the relevant standard
• Explain the response
• Reference the revised sheet
• Identify any offered condition
• State whether the issue has been resolved

This makes it easier to determine whether a later incompatibility finding is new, unresolved or unsupported.

Development Application Fees

Effective January 1, 2027, county and municipal application fees associated with a development permit or development order must reasonably relate to the direct and reasonable indirect costs of reviewing, processing and reaching final disposition on the application.

The fee must be published on the local government’s fee schedule.

It may not be based on a percentage of:

• Construction costs
• Site costs
• Project valuation

These requirements apply through amended sections 125.022 and 166.033, Florida Statutes. (Laws of Florida)

Practical implications

Developers should request:

• The currently adopted fee schedule
• The fee category assigned to the application
• A breakdown of unusual or supplemental fees
• The authority for third party review charges
• Clarification when fees appear tied to project value

The law does not necessarily mean that every development fee will decrease. Complex applications may legitimately require more review. The key requirement is that the fee reasonably relates to the cost of processing the application rather than simply scaling with project value.

This provision concerns application fees associated with development permits and development orders. It should not be described as eliminating all permit, impact, utility, mobility, inspection or review fees.

Off Site Constructed Residential Dwellings

HB 399 creates section 553.385, Florida Statutes, effective January 1, 2027.

A qualifying off site constructed residential dwelling must be permitted as of right in zoning districts where single family detached dwellings are allowed. A local government may not treat it differently or more restrictively than a site built single family dwelling in the same district. (Laws of Florida)

Local governments may continue applying generally applicable:

• Architectural standards
• Aesthetic standards
• Design standards
• Setbacks
• Height limits
• Bulk standards

Those requirements must be applied uniformly to single family dwellings in the same zoning district.

Additional compatibility or design standards are limited to subjects including:

• Roof pitch
• Minimum livable square footage
• Exterior finishing materials
• Foundation enclosure
• Attached structures
• Setbacks
• Lot dimensions
• Building orientation

A local government may not restrict an otherwise qualifying dwelling solely because of its construction method, construction location or use of off site components. (Laws of Florida)

Opportunities for Developers and Builders

Broader use of modular and panelized systems

The off site housing provision may improve feasibility for:

• Modular single family communities
• Infill housing
• Workforce housing
• Repetitive home designs
• Disaster recovery housing
• Factory built components
• Schedule sensitive developments

The site work, foundation, utility connections, drainage, transportation, crane logistics, code compliance and inspection coordination remain critical.

More valuable preconstruction services

General contractors can provide meaningful value before construction by assisting with:

• Preliminary budgets
• Constructability reviews
• Site logistics
• Phasing
• Procurement
• Utility coordination
• Modular transportation and setting plans
• Design assist
• Mitigation pricing
• Schedule impact analysis

Compatibility mitigation can materially affect construction cost and duration. Those impacts should be quantified before the owner commits to entitlement conditions.

Better defined entitlement risk

Specific written compatibility findings may make it easier for teams to distinguish between:

• A code compliance problem
• A design problem
• A political objection
• A missing study
• A potentially solvable impact
• An issue requiring legal interpretation

That distinction supports better go or no go decisions during acquisition and due diligence.

Contract and Procurement Considerations

Developers and contractors should clearly allocate responsibility for:

• Entitlement approval
• Zoning analysis
• Legal representation
• Civil engineering
• Architectural revisions
• Public hearing attendance
• Compatibility studies
• Mitigation design
• Neighbor outreach
• Governmental fees
• Redesign after agency comments

Preconstruction agreements should state whether the contractor’s budget includes:

• Conditions that have already been imposed
• Anticipated but unconfirmed mitigation
• Off site improvements
• Utility relocations
• Enhanced landscaping
• Acoustic or lighting controls
• Additional drainage infrastructure

Schedules should distinguish between entitlement duration and construction permit duration. HB 399 may create a more specific review process, but it does not establish that every application will be approved within a particular number of days.

How General Contractors Should Use the Law

A GC should not act as the project’s land use attorney unless separately qualified. The contractor’s strongest role is operational:

1. Identify whether the design response is constructible.
2. Price each potential mitigation measure.
3. Quantify schedule effects.
4. Coordinate revised drawings across disciplines.
5. Document assumptions and exclusions.
6. Ensure imposed conditions reach the construction documents.
7. Confirm that bid packages include all final approval conditions.

A project can obtain entitlement approval and still encounter cost overruns if compatibility conditions are not incorporated into the budget and subcontractor scopes.

Common Misinterpretations to Avoid

“The city can no longer deny residential projects.”

Incorrect. Local governments may still deny applications that violate the comprehensive plan, zoning code or land development regulations. They may also deny on compatibility grounds when the required written findings are made.

“The law applies to every residential building permit.”

Incorrect. The compatibility procedures specifically reference rezoning, subdivision and site plan applications.

“All compatibility standards must now be numerical.”

Not necessarily. The law requires compatibility factors, mitigation measures, specific findings and identification of applicable standards. It creates a more defined review but does not state that every consideration must be a numerical formula.

“Community opposition no longer matters.”

Incorrect. Residents may still provide evidence and participate in public proceedings. Generalized references to neighborhood feel are simply insufficient by themselves to support a compatibility based denial.

“Off site homes are exempt from local design standards.”

Incorrect. Uniformly applied architectural, setback, height, bulk and other permitted standards may still apply.

“Development applications will now be inexpensive.”

Not necessarily. Fees must reasonably relate to processing costs and cannot be based on a percentage of project value, but complex applications can still involve substantial legitimate review costs.

Frequently Asked Questions

When do the primary HB 399 development provisions take effect?

The application fee, residential compatibility and off site housing provisions discussed in this guide take effect January 1, 2027. The act was approved and filed on March 27, 2026. (Laws of Florida)

Does the compatibility provision apply to mixed use development?

Not when the compatibility issue concerns uses in different future land use categories, including mixed use, commercial or industrial categories. The precise project conditions should be reviewed before determining applicability.

Can a local government impose conditions?

Yes. Approval may include requirements or conditions intended to mitigate or minimize compatibility concerns.

Can a developer challenge a valuation based application fee?

Beginning January 1, 2027, the statute prohibits the relevant application fee from being based on a percentage of construction costs, site costs or project valuation. The specific charge and local fee authority should be reviewed before determining the appropriate response.

Does HB 399 replace land use counsel?

No. Complex entitlement, administrative hearing and litigation issues should be handled by qualified Florida land use counsel.

Final Takeaway

HB 399 creates a more structured framework for reviewing certain residential compatibility issues. The greatest benefit will go to project teams that prepare early, identify applicable standards, document site context and respond to each concern with a feasible design or operational solution.

For developers and builders, this is not simply a legal update. It is a preconstruction and project controls issue. Compatibility requirements should be tracked, priced, scheduled and incorporated into the final construction documents before work begins.

RIDIS supports South Florida owners and project teams with preconstruction planning, constructability review, budgeting, municipal coordination and organized project execution.

Informational Notice

This guide is provided for general educational purposes and is not legal, architectural, engineering or zoning advice. Developers and contractors should consult the applicable jurisdiction and qualified Florida professionals regarding a specific property or application.

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.