Our Standard Specifications for

Prefab Modular Single-Family Residences

These are the Standard Specifications for our Prefab Modular Homes for California Modulars

 

CURRENT APPLICABLE BUILDING CODES

 

STATE: CALIFORNIA

2025      California Building Administrative Code

2025      California Building Code, Title 24

2025      California Residential Code

2025      California Electrical Code

2025      California Mechanical Code

2025      California Plumbing Code 

2025      California Fire Code

2025      California Green Building Standards Code

EXTERIOR

SIDING

Standard: Allura Fiber Cement for High-Wildfire Areas - 8” Reveal

Non-Wildfire Area Choices:

LP SmartSide, Horizontal Lap, Cedar-grain with 7” Reveal

Vertical Siding Where Batts Can be Installed On-Site

Siding Note:

Siding is installed in the factory on the long ends of the modules and whenever possible.  It is not installed on the short ends of the modules or the bottom 3-4 rows, or other areas where structural connections are required prior to the installation of siding (ship loose siding & materials to be installed by separate contract by the on-site contractor)

SIDING UNDERLAYMENT

Tyvek Residential HomeWrap

TRIM

3.5”

FASCIA

5.5”

SOFFIT

LP Smartside 8” Groove Panel

WINDOWS

Horizontal Sliding Vinyl, Low-E, Dual-Glazed, with Argon Gas

WINDOW TYPE

PlyGem, or Similar

WINDOW GRIDS

Standard: No Grids

ROOFING

GAF Timberline HD Class-A Composition Shingles

(Standard: Limited Lifetime Transferable Warranty)

SHINGLE NOTE

Shingles will be provided only if the roof can be completed in factory

ROOFING UNDERLAYMENT

30-LB or 15-LB Felt, Two Layers

WUI HIGH FIRE SPECS

Upgrade: Wildland Urban Interface High-Fire Hazard Zone Specifications, as Required by CalFire or if Requested by Any Client

FRONT DOOR

36” x 80” Fiberglass Entry Door

FRONT DOOR HARDWARE

Satin Nickel Exterior Hardware with Thumb-Open & Deadbolt

REAR DOOR (IF APPLICABLE)

32” x 80” 3-Panel Flat Craftsman Fiberglass Painted Exterior Door

REAR DOOR HARDWARE

Satin Nickel, Lever Handle with Deadbolt

CRAWL SPACE ACCESS

By Site Contractor, in Exterior of Foundation Wall

INTERIOR

DRYWALL FINISH

Drywall Hung, Seams Fire-Taped Behind Cabinets & Any Covered Areas. Texture, Finish & All Interior Paint by Site Contractor (Including Taping Seams & Mudding)

DRYWALL CORNERS

Rounded Throughout

INTERIOR DOORS

White Raised 6-Panel, Hollow-Core (standard)

INTERIOR DOOR HARDWARE

Knobs & Handles: Brushed Nickel

DOOR/WINDOW TRIM

Craftsman Package: 2.75” Sides with 3.5” Header Piece

BASEBOARDS

5.5” Square

CLOSET SHELVING

11.25” with Hanger Rod Below

WINDOW SILLS

Craftsman Sill with Trim & Apron

CABINETS

European-Style Raised-Panel or Recessed-Panel Cabinetry with Concealed Hinges & hardware, 2” Crown Moulding on Top

5 Styles & Colors to Choose from

All Hardwood Face Frames & Doors with Solid Plywood Boxes

CABINET HEIGHT

40” Hanging Wall Cabinets

DOORS & DRAWERS

Hardwood with Soft Close

HARDWARE

Knobs & Handles: Brushed Nickel

COUNTERTOPS

Granite in Kitchen & All Bathrooms

BACKSPLASHES

4” Granite

KITCHEN SINK

9” Deep Stainless Steel Single Bowl

KITCHEN FAUCET

Single Lever Gooseneck with Sprayer in Brushed Nickel

GARBAGE DISPOSAL

½ HP with Continuous Feed: InSinkErator

REFRIGERATOR

Plumbed for Ice-maker: Refrigerator By Client/Site Contractor

ATTIC ACCESS

Per Plan

APPLIANCES

RANGE

Prepped for Electric Range (Range Not Included)

RANGE VENTILATION

Electric Hood

DISHWASHER CUT-OUT

Cut-out for Dishwasher Provided if Requested

REFRIGERATOR PREP

Plumbed for Ice-maker: Refrigerator By Client/Site Contractor

RANGE HOOD

Vent Prep Only

WASHER & DRYER

None (Standard)

OR: OMIT ALL

Option to Omit Hood & All Prep Work

MASTER BATHROOM

 

SHOWER

Composite Shower Pan with Concrete Backer Board Prep for Tile (Tile by Others)

TUB

Alcove Tub with Composite Panel Walls

Substitute: Concrete Backer Board Prep for Tile Instead of Composite Wall Panels (No Additional Charge) 

WATER SAVING FIXTURES

All Fixtures are EPA “WaterSense” and CalGreen Certified

TUB/SHOWER FAUCETS

Single Lever Diverter: Brushed Nickel

TUB FAUCETS

Dual-Handle: Brushed Nickel

SHOWER HEAD HEIGHT

7’, or Height as Requested

LAVY

Dual China Sink with Overflow

LAVY FAUCET

Single-Handle Lavy Faucet: Brushed Nickel

WATER CLOSET

Elongated, Dual-Flush

MIRROR

Beveled Edge, Above Sink

MEDICINE CABINET

Recessed

HARDWARE

24” Towel Bar, Tissue Holder, & Towel Ring in Brushed Nickel

CABINETS

European-Style Raised-Panel or Recessed-Panel Cabinetry with Concealed Hinges & Hardware

VENTILATION

Panasonic® Whisper Green Auto-on Humidistat Ventilation Fans

ELECTRICAL

 

MAIN PANEL

200 AMP Unmetered Electrical Panel

EV CAR PREP

Breaker for Electric Car

METER PANEL OPTION

Upgrade: Meter Base Panel on Exterior Wall

SWITCHES

Leviton Decora Switches & Outlets

LIGHT BULBS

LED Integrated Bulbs in All Lighting Fixtures

EXTERIOR ENTRY LIGHTS

One (1) LED Wall Light per Exterior Door

KITCHEN AREA LIGHTS

Five or Six (5-6) LED Recessed Lights, per plan

DINING ROOM

Junction Box for a Chandelier with Blocking, Chandelier by Site Contractor

USB RECEPTACLE

One (1) in Kitchen Area to charge electronic devices

BATHROOM VANITY LIGHT

2 or 3-Light, Brushed Nickel Based on Vanity Size, on Occupancy Sensor

BEDROOM LIGHTS

Ceiling Mounted Flush Light with Brushed Nickel Trim

FANS

Prep for Fan, Fans by Site Contractor

DATA CLOSET PREP

One (1) Faceplate with Conduit Stubbed to the Bottom of Floor Joists, No Wire

DRYER HOOKUP

Recessed Box with Dedicated Vent to Outside in Floor System Rim

EXTERIOR OUTLETS

Two (2) GFCI with All-Weather Covers

SAFETY

Recessed ARC Fault Breakers Throughout Home

DETECTORS

Hard-Wired Smoke & Carbon Monoxide Detectors per Code

PLUMBING

SHUT OFF VALVES

Angle-Stops at all Vanities & Toilets; Whole-house Shutoff at Main Inlet

HOT WATER TANK

Rheem® Prestige 50 Gallon Electric EcoNet Enabled Hybrid

Exterior Access:

Upgrade: Exterior Door to be Painted the Same Color as Siding On-Site by Others

WATER SUPPLY PLUMBING

PEX Piping: Strong, Flexible, Quiet, & Corrosion-Resistant

WASTE PLUMBING

ABS Piping

GAS LINES

Gas Piping Installed On-Site by General Contractor, If Applicable

HOSE BIBS

Two (2) Included on Exterior

MECHANICAL

AIR HANDLER

Fan Coil Unit for Heat Pump (Electric)

DUCT SYSTEM

Insulated per Title 24 & Mechanical Plans

VENTILATION of WHOLE HOUSE

Insulated per Title-24 & Mechanical Plans

VENTILATION of BATHS/UTILITY

Insulated per Title-24 & Mechanical Plans

AIR RETURN

Ducted Air Returns

EXTERIOR UNIT

Condensing Unit for Heat Pump on Pad Outside of Home by Site Contractor

MINI-SPLIT HEAT PUMP

Engineered Item per Plans, Ducted or Ductless (Upgrade)

GENERAL

FLOORING OF WET AREAS

Standard: None

FLOORING OF DRY AREAS

Standard: None

ALL FLOORING

Supplied & Installed by Site Contractor

TILE PREP

Upgrade: Backer-Board Prep for Tile Floors

PAINT

All Interior & Exterior Paint to be Provided & Applied by Site Contractor

DÉCOR

WINDOW COVERINGS

None

STRUCTURAL

FLOOR JOIST

2X12 Double Rims with Floor Trusses or per Plans

FLOOR DECKING

23/32 Tongue & Groove OSB

EXTERIOR WALLS

2X6: 16” On Center

WALL HEIGHT

9’ Standard

INTERIOR WALLS

Minimum: 2X4

ROOF PITCH & LOAD

4/12 Roof Pitch with Ridge Cap, 30 lb Roof Load, or per Plans

Upgrades: Steeper Roof Pitch or High Snow Load Roofs

ROOF TRUSSES

24” On Center with 7/16” OSB Roof Sheathing

EAVES & OVERHANGS

16” or per Plans

CEILING

Flat Throughout

FIRE SPRINKLERS

FIRE SPRINKLERS          

Included: Plan Specific Engineered Design

 

ENERGY EFFICIENCY

INSULATION

EcoBatt® Formaldehyde-free Insulation From Knauf

Floor: R-30

Walls: R-19

Ceiling/Roof: R-38

Sill Seal with Vapor Barrier

COVERED PORCH

COVERED PORCH

Upgrade: Per PLAN if built in Factory

Deck Framing: Pressure Treated 2x

Decking: Composite

Square Baluster: Composite

Porch Columns: Craftsman style

Fiber Cement Ceiling with 2 Recessed LED Lights

 

DISCLAIMER

Specifications subject to change without notice prior to the signing of a complete order form