The Coastal Haven

1,200 sqft of Elevated Living

Choose Your Package:

Steel Frame Package

DIY-friendly structural kit

Actual Structural Engineered Stamped Plans to Turn into Building Dept. (Not just shop drawings)
Complete Steel Frame Kit with OSB Attached Already and Holddowns
Just Erect and Bolt Together
Trusses and Roof Included

Turnkey Delivery

Complete move-in ready home

Everything in Steel Frame Package
Complete Home Kit Ready To Move In!
Just Erect and Bolt Together, Slide in Doors and Windows, Add Siding, etc.

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Product Description

The Coastal Haven ADU is a bold 1,200-square-foot, two-story dwelling that combines modern coastal charm with contemporary design. Featuring a L-shaped balcony, abundant windows, and a clean board-and-batten exterior, the Coastal Haven offers expansive living in a compact footprint. Ideal for multi-generational living, a rental unit, or a spacious guest house, this model delivers elevated style and steel-frame durability.

L-shaped Balcony - Signature 90-degree outdoor living
Modern coastal style - Trending architectural aesthetic
24 ft ridge height - Dramatic vertical presence
Board-and-batten exterior - Classic American coastal detail
Multi-generational design - Separate living zones possible

Specifications

Size Details

Two-Story ADU
1,200 sq. ft. total living space
Approx. 24 ft x 25 ft footprint
Expansive L-shaped balcony

Design Features

Modern coastal style with board-and-batten exterior
9 ft wall heights with a striking 24 ft ridge height
Cantilevered balcony for outdoor living and elevated views
Large windows and French/sliding doors for abundant natural light
Flexible floor plan ideal for multi-generational living or rental use

What's Included in Steel Frame Package

Precision-engineered 2x6 cold-formed steel framing for walls, floors, and roof system
Pre-cut, pre-drilled members for fast, simplified assembly
Engineered roof truss system and balcony support design for long-term stability
OSB sheathing pre-attached for added rigidity and installation efficiency
Engineered drawings included, tailored to your specific building jurisdiction requirements

Turnkey Inclusions

Full steel frame with weatherproof exterior envelope
Premium siding options: Hardie Plank®, cement fiberboard, or board-and-batten
Roofing system with underlayment and shingles or standing seam metal roofing
Energy-efficient double-pane vinyl windows and French or sliding glass doors
Complete insulation package (R-28 or better)
Interior finishes: drywall, paint, flooring, trim, and stairway details
Kitchen with cabinetry, countertops, sink, faucet, and appliance-ready hookups
Bathrooms with vanity, toilet, shower/tub, and accessories
Complete mechanical, electrical, and plumbing (MEP) systems: HVAC, water heater, plumbing, and electrical
Exterior lighting, balcony railings, and finished wrap-around deck

Keep Looking

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Proof In Practice

Owners who stopped compromising.

We needed extra space for our growing family and a quiet area for remote work. TruHaven ADU provided us with a beautiful, functional addition that perfectly meets both our needs. It’s been a game-changer for our household!

John Clark TruHaven Owner

Adding a TruHaven ADU to our property was one of the best investments we’ve made. It not only provides us with extra living space but also increased our home’s value. Knowing that it offers flexibility for our future plans gives us great peace of mind.

Elizabeth Johnson TruHaven Owner

We were looking for a durable and low-maintenance solution for our backyard. TruHaven ADU exceeded our expectations with its sturdy construction and minimal upkeep. It’s reassuring to know that our new space will last for many years without any issues.

Michael Wim TruHaven Owner