Single Family

Single Family Attached Dwelling Space

ADU attached to an existing single family home

Last updated: Apr 22, 2026

Section 1

Required Documents

Submit these with your initial project package.

Always required

  • Construction Plans Sealed by a Florida Registered Design Professional
    Construction drawings showing addition layout and connection to existing structure
  • Energy Compliance Forms
    Energy compliance documentation per FBC Chapter 13 / IECC
  • Product Approvals
    Florida Product Approvals for windows, doors, roofing, and other regulated components
  • Site Plan / Survey
    Site plan or survey showing property boundaries, setbacks, and addition footprint

Conditional

  • Truss Engineering & Layout OR Truss Deferral Affidavit
    Truss engineering package, conventional framing per FBC, or a truss deferral letter requesting deferred submittal of truss engineering.
    WhenRequired only when structure uses pre-engineered trusses and truss engineering is not shown in the sealed plan set; satisfied by truss engineering in plan set OR conventional framing per FBC OR a truss deferral letter.

Section 2

Plan Review Criteria

What FCC's plans examiner looks for on this project type, by trade. Items are grouped by priority — life-safety first. Building department checks may go further; this is the FCC private provider scope under FL Statute 553.791.

BuildingRequired

  1. #01Design wind speed & exposureLife Safety

    Structural drawings must declare design wind speed (Vult) and exposure category matching the jurisdiction's wind speed map.

    FBC-R R301.2.1ASCE 7-22
  2. #02Egress from sleeping roomsLife Safety

    Each sleeping room must have an emergency escape and rescue opening meeting R310 dimensions.

    FBC-R R310
  3. #03Smoke and CO alarm coverageLife Safety

    Smoke alarms in each sleeping room, outside each sleeping area, and on each story. CO alarms where fuel-fired appliances or attached garages exist.

    FBC-R R314FBC-R R315
  4. #04Structural wall section and load pathLife Safety

    A continuous wall section from foundation through roof must show framing, sheathing, connectors, and uplift resistance.

    FBC-R R301FBC-R R602FBC-R R802
  5. #05Florida product approvalCode

    Florida product approval (FL#) or Miami-Dade NOA must be listed for regulated products (fenestration, structural panels, covering systems).

    FBC-B 1708FBC-R R301.2.1.2

MechanicalAdvisory

AdvisoryPlan review is not required for this scope under FBC 107.3.5. FCC reviews these items only when the building department specifically requires it, or when the client opts in.
  1. #01Combustion air and ventingLife Safety

    Fuel-fired equipment requires combustion air and proper venting per FBC-M 303 / 804.

    FBC-M 303FBC-M 804FBC-FG
  2. #02Manual J / S / D load calculationPerformance

    HVAC equipment sizing per Manual J; selection per Manual S; duct design per Manual D.

    FBC-R M1401.3FBC-M 309
  3. #03VentilationPerformance

    Whole-house or occupancy-based ventilation per FBC-R M1507 / FBC-M 403.

    FBC-R M1507FBC-M 403

ElectricalAdvisory

AdvisoryPlan review is not required for this scope under FBC 107.3.5. FCC reviews these items only when the building department specifically requires it, or when the client opts in.
  1. #01AFCI and GFCI protectionLife Safety

    AFCI protection for dwelling unit branch circuits per NEC 210.12; GFCI per NEC 210.8 at required locations.

    NEC 210.8NEC 210.12
  2. #02Grounding and bondingLife Safety

    Grounding electrode, equipment grounding, and bonding per NEC Article 250.

    NEC 250
  3. #03Service size and load calculationCode

    Electrical service and feeder sizing supported by NEC Article 220 load calculation.

    NEC 220NEC 230

PlumbingAdvisory

AdvisoryPlan review is not required for this scope under FBC 107.3.5. FCC reviews these items only when the building department specifically requires it, or when the client opts in.
  1. #01Water service and DWV sizingCode

    Water service line sizing and DWV sizing consistent with fixture unit count.

    FBC-P 604FBC-P 709FBC-P 906
  2. #02Backflow preventionCode

    Backflow prevention required at well, irrigation, or other cross-connections per FBC-P 608.

    FBC-P 608

Items marked Advisory are non-blocking. Per FBC 107.3.5, plan review isn't required for these scopes — FCC reviews them when the building department requests it or the client wants the extra set of eyes.

Section 3

Inspection Walkthrough

Inspections are listed in their typical phase order. Your FCC inspector will confirm which apply to your project. Call (772) 222-6679 with questions.

Plumbing

Phase #1

Underground Plumbing

Required
  1. Pipe material and sizingCritical

    Verify pipe material and sizes match approved plans

    FBC-P 604.1FBC-P 305.1
  2. Burial depthCritical

    Verify underground pipe burial depth meets code minimum

    FBC-P 305.5
  3. Pipe slope and supportCritical

    Verify proper slope on drain lines and adequate support

    FBC-P 704.1
  4. Pressure testCritical

    Verify plumbing system holds required pressure test

    FBC-P 312.2
  5. Cleanout locations

    Verify cleanout access points are installed per plans

    FBC-P 708.1

Electrical

Phase #2

Underground Electrical

Conditional
  1. Conduit installationCritical

    Verify conduit material, size, and routing per plans

    NEC 300.5
  2. Burial depthCritical

    Verify conduit burial depth meets code minimum

    NEC 300.5
  3. UFER ground connectionCritical

    Verify UFER grounding electrode is properly connected to rebar in footing

    NEC 250.52(A)(3)
  4. Conduit protection

    Verify conduit is protected from damage where exposed

    NEC 300.5(D)

Building

Phase #3

Footing, Slab, UFER

Required
  1. Footing dimensionsCritical

    Verify footing width and depth match approved plans

    FBC-R R403.1FBC-R R403.1.1
  2. Rebar size and spacingCritical

    Verify rebar size, spacing, and placement per plans

    FBC-R R403.1
  3. UFER grounding electrodeCritical

    Verify minimum 20 feet of #4 bare copper or rebar is encased in footing

    NEC 250.52(A)(3)
  4. Slab vapor barrierCritical

    Verify vapor barrier is installed under slab per plans

    FBC-R R506.2.3
  5. Slab thickness and wire meshCritical

    Verify slab thickness and reinforcement per plans

    FBC-R R506.1
  6. Foundation anchorage layout

    Verify anchor bolt placement for sill plate attachment

    FBC-R R403.1.6
Phase #4

Fill Cell, Tie Beam, Lintel

Conditional
  1. Cell fill and groutCritical

    Verify cells are properly grouted per plans

    FBC-R R609.1.1
  2. Tie beam reinforcementCritical

    Verify tie beam rebar size, spacing, and lap splices per plans

    FBC-R R609.1
  3. Lintel reinforcementCritical

    Verify lintel rebar and sizing over openings per plans

    FBC-R R609.7
  4. Vertical rebar placementCritical

    Verify vertical rebar is properly placed and spaced in block wall

    FBC-R R609.1
Phase #5

Rough Framing

Required
  1. Wall stud spacing and sizeCritical

    Verify stud size and spacing match approved plans

    FBC-R R602.3FBC-R R602.3.1
  2. Headers and beamsCritical

    Verify header and beam sizes over openings per plans

    FBC-R R602.7
  3. Top and bottom plate connectionsCritical

    Verify double top plates with proper lapping and anchored bottom plates

    FBC-R R602.3.2
  4. Corner and intersection bracingCritical

    Verify proper bracing at corners and wall intersections

    FBC-R R602.10
  5. Window and door rough openingsCritical

    Verify rough openings match approved plans for size and location

    FBC-R R602.7
  6. Hurricane straps and hold-downsCritical

    Verify hurricane straps and hold-down hardware installed per plans

    FBC-R R802.11
  7. Fire blocking

    Verify fire blocking is installed at required locations

    FBC-R R602.8
Phase #6

Roof Sheathing

Conditional
  1. Roof sheathing attachmentCritical

    Verify roof deck nailing pattern and edge spacing per the approved nailing schedule.

    FBC-R R803.2FBC-R R802.11
  2. Roof sheathing material and thicknessCritical

    Verify roof sheathing panel material, thickness, and span rating match the approved plans.

    FBC-R R803.1
  3. Panel gap spacing at roof deck

    Verify proper edge gap between roof sheathing panels per the panel manufacturer.

    FBC-R R803.2
Phase #7

Wall Sheathing

Conditional
  1. Wall sheathing attachmentCritical

    Verify wall sheathing nailing pattern and edge spacing per the approved nailing schedule (shear wall zones often require tighter spacing).

    FBC-R R602.3
  2. Wall sheathing material and thicknessCritical

    Verify wall sheathing panel material, thickness, and grade stamp match the approved plans.

    FBC-R R602.3
  3. Panel gap spacing at walls

    Verify proper edge gap between wall sheathing panels per the panel manufacturer.

    FBC-R R602.3
Phase #8

Truss Tie Down and Engineering

Required
  1. Truss spacing and alignmentCritical

    Verify truss spacing and alignment match approved plans

    FBC-R R802.10
  2. Truss-to-wall connectionCritical

    Verify hurricane clips or straps at every truss-to-wall connection

    FBC-R R802.11
  3. Truss bracingCritical

    Verify lateral and diagonal bracing is installed per truss engineering

    FBC-R R802.10.3
  4. Truss engineering on siteCritical

    Verify sealed truss engineering package is available and matches installed trusses

    FBC-R R802.10.1
  5. Gable end bracing

    Verify gable end trusses are properly braced

    FBC-R R802.10.3
Phase #9

Roof Dry In, In Progress

Required
  1. Underlayment installationCritical

    Verify roof underlayment is installed per code and manufacturer specs

    FBC-R R905.1.1
  2. Drip edge installationCritical

    Verify drip edge is installed at eaves and rakes

    FBC-R R905.2.8.5
  3. Valley and flashingCritical

    Verify valley flashing and wall flashing are properly installed

    FBC-R R903.2
  4. Roof penetration sealing

    Verify all roof penetrations are properly sealed and flashed

    FBC-R R903.2

Plumbing

Phase #10

Rough Plumbing

Required
  1. Supply pipe sizing and materialCritical

    Verify supply pipe sizes and material match approved plans

    FBC-P 604.1
  2. DWV pipe sizing and slopeCritical

    Verify drain, waste, and vent pipe sizes and slope per plans

    FBC-P 704.1
  3. Pipe support and hangingCritical

    Verify pipes are properly supported at required intervals

    FBC-P 308.1
  4. Vent termination locations

    Verify vent pipes terminate properly through roof

    FBC-P 903.1
  5. Water heater rough-in

    Verify water heater location, drain pan, and connections per plans

    FBC-P 607.1

Electrical

Phase #11

Rough Electrical

Required
  1. Panel installationCritical

    Verify electrical panel is properly mounted and sized per plans

    NEC 408.4
  2. Wire sizing per circuitsCritical

    Verify wire gauge matches breaker amperage for each circuit

    NEC 210.3NEC 240.4
  3. Box fill and installationCritical

    Verify electrical boxes are properly installed and not overfilled

    NEC 314.16
  4. GFCI and AFCI locationsCritical

    Verify GFCI and AFCI protection is provided where required

    NEC 210.8NEC 210.12
  5. Smoke and CO alarm wiringCritical

    Verify interconnected smoke and CO alarm wiring is in place

    FBC-R R314.3FBC-R R315
  6. Grounding and bondingCritical

    Verify grounding electrode system and bonding connections

    NEC 250.50

Mechanical

Phase #12

Rough Mechanical/HVAC

Required
  1. Ductwork installationCritical

    Verify duct sizes, routing, and support match approved plans

    FBC-M 603.1
  2. Duct sealingCritical

    Verify duct joints and connections are properly sealed

    FBC-M 603.9
  3. Equipment placementCritical

    Verify air handler and condenser locations per plans with required clearances

    FBC-M 304.1
  4. Refrigerant line installation

    Verify refrigerant line sizing and insulation per plans

    FBC-M 1101.3
  5. Return air pathway

    Verify return air pathways are properly sized and located

    FBC-M 601.2

Building

Phase #13

Insulation

Required
  1. Wall cavity insulation R-valueCritical

    Verify wall insulation R-value matches energy calculations

    FBC-E R402.1
  2. Ceiling/attic insulation R-valueCritical

    Verify ceiling or attic insulation R-value per energy calculations

    FBC-E R402.1
  3. Insulation coverage and gapsCritical

    Verify no gaps, voids, or compression in insulation installation

    FBC-E R402.4
  4. Air sealing

    Verify air sealing at penetrations, top plates, and rim joists

    FBC-E R402.4.1
Phase #14

Lathe, Siding

Conditional
  1. Wall covering material and installationCritical

    Verify exterior wall covering material matches approved plans and is properly installed

    FBC-R R703.1
  2. Weather-resistive barrierCritical

    Verify weather-resistive barrier is properly installed behind cladding

    FBC-R R703.2
  3. Flashing at penetrations and transitionsCritical

    Verify flashing is installed at windows, doors, and wall transitions

    FBC-R R703.4
  4. Fastener pattern and spacing

    Verify cladding fastener type and spacing per manufacturer and plans

    FBC-R R703.1
Phase #15

Drywall

ConditionalBD-Dependent

Most jurisdictions skip this inspection for this project type. Confirm with your building department whether they'll require it.

  1. Drywall thickness and typeCritical

    Verify drywall thickness matches plans, moisture-resistant board in wet areas

    FBC-R R702.3.1
  2. Fastener spacingCritical

    Verify screw or nail spacing meets code requirements

    FBC-R R702.3.5
  3. Fire-rated assembliesCritical

    Verify fire-rated walls and ceilings have proper drywall layers per rating

    FBC-R R302.6
  4. Moisture barrier in wet areas

    Verify moisture barrier behind tub/shower surrounds where required

    FBC-R R702.4

Electrical

Phase #16

Final Electrical

RequiredTypical Final
  1. Panel complete and labeledCritical

    Verify panel cover installed, all breakers labeled, no open knockouts

    NEC 408.4
  2. GFCI and AFCI operationalCritical

    Verify all GFCI and AFCI devices test and reset properly

    NEC 210.8NEC 210.12
  3. Receptacle and switch functionCritical

    Verify outlets and switches operate correctly throughout

    NEC 210.52
  4. Light fixtures installed

    Verify all light fixtures are installed and operational

    NEC 210.70
  5. Exterior lighting and outletsCritical

    Verify exterior outlets are GFCI protected and lighting is functional

    NEC 210.8NEC 210.52(E)

Plumbing

Phase #17

Final Plumbing

RequiredTypical Final
  1. Fixture installation and operationCritical

    Verify all plumbing fixtures are installed, connected, and operational

    FBC-P 405.1
  2. Water heater installationCritical

    Verify water heater is properly installed with TPR valve, drain pan, and discharge pipe

    FBC-P 607.1
  3. No visible leaksCritical

    Verify no leaks at any supply or drain connection

    FBC-P 312.1
  4. Hose bibbs and exterior plumbing

    Verify exterior hose bibbs have backflow prevention

    FBC-P 608.15.4.2

Mechanical

Phase #18

Final Mechanical/HVAC

RequiredTypical Final
  1. System operational testCritical

    Verify HVAC system starts, runs, and produces heated and cooled air

    FBC-M 304.1
  2. Air handler and condenser installationCritical

    Verify equipment is properly installed with required clearances and level

    FBC-M 304.1
  3. Condensate drainCritical

    Verify condensate drain is properly routed and terminated

    FBC-M 307.2
  4. Duct registers and grilles

    Verify all supply and return registers are installed and operational

    FBC-M 601.2
  5. Equipment labels and data plates

    Verify equipment nameplates match approved plans for capacity and efficiency

    FBC-M 304.1

Building

Phase #19

Final Building

RequiredTypical Final
  1. Egress doors and hardwareCritical

    Verify egress doors provide minimum 32-inch clear width and proper hardware

    FBC-R R311.2
  2. Smoke alarms installed and operationalCritical

    Verify smoke alarms in each bedroom, outside sleeping areas, and each level

    FBC-R R314.3
  3. CO alarms installedCritical

    Verify carbon monoxide alarms where required

    FBC-R R315
  4. Emergency escape openingsCritical

    Verify bedroom windows meet egress size requirements

    FBC-R R310.1
  5. Stairway complianceCritical

    Verify stair rise, run, handrail height, and landing dimensions

    FBC-R R311.7
  6. Address numbers visible

    Verify address numbers are posted and visible from street

    FBC-R R319.1
  7. Exterior finishes complete

    Verify exterior cladding, trim, and weatherproofing are complete

    FBC-R R703.1
  8. Site grading and drainage

    Verify finish grade slopes away from foundation minimum 6 inches in 10 feet

    FBC-R R401.3