Professional Building Systems, Inc. Standard Specifications

A Modular Home Quality Leader

Refer to model information for specific application. These specifications do not include all available options or color choices. Professional Building Systems, Inc. may replace specification with material of equal or higher value.


  • Smooth ceiling finish
  • Interior walls/ceilings primed with Painters Edge Flat, Shell White
  • 6-panel colonial white, hollow core doors with 3 mortised hinges
  • Wood colonial trim, painted white, 2-1/4" casing and 3-1/4" base molding
  • Window stools with return mitered ends
  • Satin nickel locksets and hinges, and matching door stops
  • Privacy locksets on bathrooms and master bedroom
  • Vinyl-coated metal closet, pantry and linen closet shelving


  • Certainteed Mainstreet vinyl siding in double 4" Clapboard or Dutchlap
  • Tamko Heritage 30-year architectural shingles
  • 15# shingle underlayment & ice shield installed per code
  • Aluminum drip edge and 6" fascia
  • Vented vinyl soffit
  • Therma-Tru fiberglass 6-panel front door w/ vinyl jambs & brickmould
  • Therma-Tru fiberglass half-lite rear door w/ vinyl jambs & brickmould
  • 6' vinyl sliding patio door w/ low-e glass (floor plan dictates)
  • Ply Gem MW Classic Series double hung vinyl windows – tilt sash, DP50, Warm Edge, low-e glass, Argon gas filled with full screens
  • Vinyl Raised Panel or Louvered shutters on front elevation
  • Satin nickel locksets & hinges (locksets keyed alike)


  • 200-amp panelboard with 40 breaker spaces
  • Decora style silent rocker switches
  • AC/DC smoke detectors and carbon monoxide detectors, per code
  • Receptacles with ground fault circuit interrupter (GFCI) protection, per code
  • Switched receptacle in Living Room and Bedrooms
  • Ceiling lights in Foyer, Kitchen, Hall, Utility, Walk-in Closets, Basement Stairwell, & Attic
  • Chandelier in Dining area
  • LED-fire rated/water proof surface mount downlight over kitchen sink
  • One exterior light at each exterior door
  • Satin nickel lighting fixtures
  • Door chimes – buttons at front and rear or side door
  • Two RG6 television jacks and two CAT-5 telephone jacks


  • 2x10 floor joists @ 16" o.c. (12" o.c. for 15'9" wide modules is recommended)
  • Southern yellow pine (SYP) double perimeter band joists
  • 23/32" tongue and groove O.S.B. floor sheathing, glued and nailed
  • 7/12 non-storage rafters @ 24" o.c.
  • 7/16" O.S.B. roof sheathing ("H" clips with 24" o.c. rafters)
  • Shingle-over ridge vent (full ridge standard for proper venting)
  • 10" eave and gable end overhangs
  • 8'0" ceiling height
  • 5/8" type "X" ceiling gypsum board
  • 2x6 exterior wall studs @ 24" o.c.
  • 7/16" O.S.B. exterior wall sheathing
  • 2x4 interior wall studs @ 24" o.c. (2x6 plumbing walls)
  • 2x4 mating wall studs @ 16" o.c. with non-structural sheathing
  • 1/2" wall gypsum glued & screwed on all walls, with additional foam adhesive applied on bearing walls


  • Merillat Spring Valley Square oak cabinets – traditional overlay, recessed panel w/ single roll-out trays in base Cabinets (where applicable), 5/8" dove tail drawer box w/full extension undermount soft close drawer glides and soft close action doors
  • Crown molding on wall cabinets
  • Square edge laminate countertop and backsplash
  • 8" deep double bowl stainless steel sink
  • Moen SRS kitchen faucet w/ side spray
  • 30" range hood - vented to exterior
  • 110V receptacle for gas range


  • Merillat Spring Valley Square oak vanity base cabinets – traditional overlay with soft close action doors
  • One-piece cultured marble vanity top and bowl
  • 18" x 24" recessed medicine cabinet with mirrored door and decorative light
  • 60" one-piece fiberglass tub/shower combination (also 36", 48", 60" shower or 60" tub – floor plan dictates)
  • Elongated low consumption 1.6 gpf toilet
  • Moen lavatory faucet in brushed nickel
  • Ceiling fan/light combination - vented to exterior

Plumbing & Heating:

  • Electric baseboard heating elements with wall mounted thermostat
  • 50-gallon electric water heater, shipped loose
  • PEX water supply and PVC DWV lines stubbed through floor
  • Shut-off valves on all fixtures
  • Anti-scald valves on tubs and showers


  • R-38 fiberglass ceiling insulation with vapor barrier
  • R-21 high density fiberglass exterior wall insulation with vapor barrier
  • Wind barrier house wrap

Additional Two Story Specifications:

  • 2x6 ceiling joists @ 16" o.c. with double 2x10 perimeter band joists
  • 2x4 mating wall studs @ 16" o.c. with non-structural sheathing
  • Fiberglass insulation along exterior perimeter between floor and ceiling
  • Second story horizontal plumbing lines ran
  • All second story siding shipped loose
  • Stairs to second story installed (carpet and pad shipped loose) – floor plan dictates

Additional Cape Specifications:

  • 12/12 rafters @ 16" o.c.
  • 23/32" tongue and groove O.S.B. floor sheathing between knee walls, tacked in place
  • 3" PVC waste line and two 3/4" supply lines stubbed to second story
  • 3 electrical circuits ran to second story
  • Two (3046) Ply Gem MW Classic Series double hung vinyl windows – tilt sash, DP50, Warm Edge, low-e glass, Argon gas filled with full screens & trim, shipped loose for second story gable ends
  • 36" stairs installed to second story (carpet and pad shipped loose).
  • Close-off package (panelized walls, insulation, gypsum board and 30" interior door with trim)

Additional Raised-Ranch Specifications:

  • Recessed entry (floor plan dictates)
  • Foyer light
  • Hot water baseboard heating element for landing, shipped loose
  • Landing with vinyl sheet flooring
  • Stairs up to living area with carpet and pad, shipped loose

Floors Covering:

  • Vinyl sheet flooring in Foyer, Kitchen, Bathrooms and Utility
  • Shaw 25 oz. carpet (stain safety treated and FHA certified) over an 8 lb. 7/16" pad


  • Ten year RWC Structural Warranty