"ADU installation services included"

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'' WE BUILD BETTER"  Call today (561)-932-6348 /(561)-541-5517

 Expand your property with a modern ADU — perfect for guests, rentals or family. QMS builds it right the first time.  Build Your ADU, Build smart, safe and efficiently with Palm Beach’s trusted ADU contractor. 

  Quality Modernizing Services Inc. QMS ADU / Tiny-Home construction process is engineered for precision, durability and full compliance with Florida Building Code (FBC) and local municipal requirements. We coordinate all critical component slab and anchoring systems to water, sewer and electrical installations to ensure your Auxiliary Dwelling Unit is safe, efficient and ready for occupancy. We serve Delray Beach, Boca Raton and all of Palm Beach County.

• Verify property boundaries, setbacks and approved ADU layout using laser levels and survey benchmarks.
   
• Mark foundation corners and utility routes (water, sewer and electrical).

• Remove vegetation, topsoil and debris.
   
• Grade the lot for proper slope and storm-water drainage away from the structure.
   
• Compact soil using mechanical compaction to achieve required bearing capacity (per soil engineer’s report).
   
• Utility Trenching

• Excavate trenches for domestic water, sanitary sewer and electrical conduit routes before forming the slab.
   
• Maintain required depths (minimum 12” for electrical, 18” for water, 24” for sewer unless Florida Building code differs). 

• Footing Excavation
   
• Excavate perimeter and interior footings as designed by structural engineer.
   
• Minimum depth per Florida code and soil conditions (typically 12–24 inches).
   
• Formwork Installation
   
• Set wood or metal forms to match the building footprint, verified square and level.
   
• Apply form-release agent and check diagonal measurements for accuracy.
   
• Vapor Barrier & Reinforcement
   
• Install a 6-mil polyethylene vapor barrier over compacted base fill.
   
• Place reinforcing steel as per plans (rebar #4 @ 12" O.C.) or welded wire mesh as specified.
   
• Install anchor bolt templates or sleeves in place before concrete pour.
   
• Utility Stub-Ups
   
• Position PVC sleeves or conduit penetrations for water, sewer and electrical service to pass through the slab.
   
• Verify correct locations for bathrooms, kitchens and laundry areas before pour.
   
• Concrete Pouring
   
• Pour 3,000–4,000 PSI concrete mix (per structural spec).
   
• Use mechanical vibration and screeds to level the slab.
   
• Apply trowel finish and curing compound after surface set.
   
• Curing & Inspection
   
• Allow concrete to cure a minimum of 3–7 days before structural framing.
   
• Perform foundation inspection by local building department prior to continuation.

• Anchor Bolts & Hold-Downs
   
• Install ½” x 10” galvanized anchor bolts embedded in concrete every 6 feet and within 12” of all corners/openings.
   
• Use Simpson Strong-Tie or equivalent hold-downs for shear wall locations per engineering drawings.
   
• Sill Plate Installation
   
• Place pressure-treated sill plates over sill seal gasket to prevent moisture intrusion.
   
• Secure to anchor bolts with washers and nuts, verifying level alignment.
   
• Framing Connection
   
• Begin wall framing once the slab and sill plate are verified level and anchored.
   
• Apply hurricane straps and metal connectors per Florida wind-load design.

• Connection to Main Supply
   
• Tap into existing municipal water service or private well system per local water utility regulations.
   
• Install a dedicated shut-off valve and backflow preventer at the property connection point.
   
• Underground Piping
   
• Use PVC Schedule 40 or PEX-A tubing rated for potable water.
   
• Lay piping at required burial depth (minimum 18” cover in most Florida jurisdictions).
   
• Insulate all lines passing through or above slab to prevent condensation and thermal transfer.
   
• Interior Distribution
   
• Stub up supply lines at wall framing points for kitchen, bathroom and laundry areas.
   
• Pressure-test all water lines to 80 PSI for 15 minutes minimum before covering.

 5. Sanitary Sewer Connection 

• Main Line Tie-In
   
  • Connect ADU sewer line to existing home cleanout or municipal tap with proper slope (1/4” per foot minimum).
     
  • Use 4” Schedule 40 PVC or SDR-26 sewer pipe depending on site layout.
     
• Cleanouts & Venting
   
  • Install two-way cleanouts at building exit and directional fittings at turns.
     
  • Connect all fixture drains to a properly vented waste system per Florida Plumbing Code.
     
• Testing & Inspection
   
  • Perform a water or air test to verify system integrity.
     
  • Schedule inspection before backfilling trenches.

 6. Electrical Meter, Main Service, and Conduit Installation 

• Utility Coordination
   
• Coordinate with Florida Power & Light (FPL) or local provider for meter location and service approval.
   
• Determine if ADU requires separate meter (for independent billing) or sub-feed from main panel.
   
• Underground Service
   
• Install Schedule 80 PVC conduit from service pole or main house to ADU.
   
• Maintain required burial depth (minimum 18” per NEC).
   
• Pull 4-wire system (2 hot, 1 neutral, 1 ground) sized according to load calculation.
   
• Main Panel Installation
   
• Mount exterior-rated 200A or 100A main disconnect panel per engineer’s design.
   
• Ground the system with two copper rods or a UFER ground bonded to the rebar in the slab.
   
• Branch Circuits & Interior Rough-In
   
• Run circuits for lighting, receptacles, HVAC, and appliances.
   
• Label all breakers clearly and verify compliance with National Electrical Code (NEC 2023) and local amendments.
   
• Inspection & Activation
   
• Schedule electrical rough-in and final inspections.
   
• Upon approval, the power company installs and activates the electrical meter.

 7. Final Testing, Backfill, and Quality Control 

• Backfill all trenches after inspections and compact to original grade.
   
• Verify water pressure, electrical voltage and sewer flow.
   
• Conduct a full systems integration check for all utilities.
   
• Prepare as-built documentation for homeowner and city record.