ADU 420 SQFT
(MODULAR HOME)
420 SQFT
1 BED
1 BATH
MODEL S3
SINGLE FAMILY (TWO STORIES)
SINGLE FAMILY (TWO STORIES)
FLOOR PLAN
The Grand Modular Home represents a sophisticated fusion of contemporary design and functional living.
A
Kitchen
D
Bedroom #1
B
Dining room
E
Bathroom
C
Living room
C
Living room
GENERAL PROJECT DESCRIPTION
Welcome to a modern single-family home designed for everyday living. Built with a 100% steel structure, this residence combines durable construction, thoughtful design, and comfort for modern families. HCD certified and Title 24 compliant, it meets California standards for energy efficiency, safety, and performance. Fresh-air ventilation, fire safety systems, air conditioning, and a functional open layout create a healthy and comfortable living environment.
FLOOR PLAN
FISRT FLOOR
living room
dining room
kitchen
bathroom#1
laundry room
bedroom#1
master bedroom#1
SECOND FLOOR
bedroom#2
master bedroom#2
bathroom#2
bedroom#3
FISRT FLOOR
Kitchen
BEDROOM #1
Dining room
BATHROOM
Living room
LAUNDRY ROOM
MASTER BEDROOM #1
FIRST FLOOR
LIVING ROOM
LAUNDRY ROOM
DINING ROOM
BEDROOM #1
KITCHEN
MASTER BEDROOM #1
BATHROOM #1
FISRT FLOOR
Kitchen
BEDROOM #1
Dining room
BATHROOM
Living room
LAUNDRY ROOM
MASTER BEDROOM #1
SECOND FLOOR
BEDROOM #2
MASTER BEDROOM #2
BATHROOM #2
bedroom #3
Inside, the home features 1 spacious primary master bedroom with a large walk-in closet, 1 junior master bedroom, and 3 additional bedrooms that provide flexibility for family living, guests, or a private office. The layout includes 4 full bathrooms, with 2 dedicated to the master suites and 2 serving the additional bedrooms. At the center of the home, a bright open-concept kitchen, dining, and living area brings people together in a space designed for comfort, connection, and effortless daily living.
SPECIFICATION
MODEL-S3 is a two-story single-family home featuring a 100% steel structure, HCD certification, Title 24 compliance, fresh-air ventilation, fire safety systems, A/C, water heater, modern fixtures, and a full kitchen. The first floor includes 1 master bedroom, 1 guest bedroom, 2 full bathrooms, kitchen, dining, living, and laundry. The second floor includes 1 bedroom, 1 master bedroom including bathroom and walk-in closet, 1 bathroom, and 1 bedroom.
BUILDING MATERIALS
CHASSIS
Structural steel chassis (bedframe and joists, ceiling/roof, columns).
FLOORING
Fire rated plywood subfloor and tiles as finishing.
WALLS
Light gauge wall framing, drywall and plaster finishing.
ROOF
Structural plywood, metal frame, moisture barrier and shingles.
INSULATION
Interior and exterior walls with cavity insulation, all exterior walls, roof and floor with continous rigid insulation.
WEATER BARRIER
Rigid insulation and moisture barrier.
EXTERIOR CLADDING
Siding, board and batten planks, and stucco.
WINDOWS
Vinyl.
GLAZING
Title 24 compliance.
UTILITIES
HEATING & AIR CONDITIONINIG
Minisplit blower and condenser.
VENTILATION
Fresh air sytem, bathroom exhaust fan, kitchen range hood.
VOLTAGE/WATTS
100 to 125 amp service, 100 to 125 amp disconnect.
SOLAR CONNECTION CONDUIT
Liquid tight or mc per project requirements.
WATER HEATER
Electrical water heater.
PLUMBING STUB-OUTS
Pex pipe for domestic water, pvc for sewer/vent and fire sprinklers.
LIGHTING
All led, energy efficient.
INTERNET
Ready to connect.
CODE COMPLIANCE
FIRE RATING
Fire-rated assemblies where required, noncombustible steel framing. Final fire ratings and sprinkler requirements are confirmed by local jurisdiction, site conditions, and approved plans.
CLIMATE ZONE
All of California 16 Zones.
BASIC WIND SPEED
90–120 mph, with site-specific engineering for special wind regions.
SNOW LEAD
20 psf minimum typical residential roof live/snow design, with higher snow-load ratings available by site-specific engineering.
FIRE SPRINKLERS
Standard feature with factory inspection.
ACCESSIBILITY
Ada convertible.
SEISMIC
Engineered for California seismic conditions.
FIRE PROTECTION/ LIFE SAFTY
Code-compliant fire and life-safety design per CBC/CRC, including smoke/CO alarms, fire-rated assemblies where required,
INSULATION R-VALUE
Floor: cavity r-38 + ridig r8
Roof: cavity r-38 + ridig r8
Walls: cavity r-19 + ridig r10
INSTALLATION
COMPATIBLE FOUNDATIONS
Concrete slabs, piers, perimeter grade beam.
CRANE LIFTING
Six eye-bolts structuraly distributed in the module.
TRANSPORTATION TRAILER
Per module type.
PREMIUM UPGRADES:
Take your home to the next level with premium finishes like granitecountertops, hardwood flooring, smart home systems, and more. Our team is ready to help you customize every detail to match your lifestyle and budget.