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A stylish wooden structure with floor-to-ceiling glass doors sits on a grassy lawn, labeled the GardenHouse24 USA ALU Concept 70O Garden Room

ALU Concept 70O – Freedom Office, 369 sq ft

SKU 7025130
Save $5,888.80
$35,332.80
$29,444.00
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The ALU Concept 70O Freedom Office is a garden office built from Nordic spruce with 70mm solid log walls. It features aluminum framing and a covered terrace. With 369 sq ft of interior space, it works well as a home office, studio or home gym.

Key specs

  • Interior area: 369 sq ft, plus 99 sq ft terrace
  • Footprint: 13.94 ft x 20.51 ft
  • Ridge height: 8.42 ft; eave height: 7.97 ft
  • Wall thickness: 70mm (2.76 in) Nordic spruce logs
  • Flat roof (1.8° slope), floor included

What's included

  • DIY kit, arrives flat-packed
  • Closed shell with internal walls
  • Doors and windows included
  • Roofing cover and rain gutters available as extras
Shipping

12 Weeks Delivery

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50% DEPOSIT

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Lasts A Lifetime!

3 Year Warranty

Engineered for Comfort. Designed to Last.

GardenHouse24 USA ALU Concept 70O Garden Room is a modern outdoor structure made from high-quality Nordic spruce with sleek aluminum sliding doors for a bright, open feel. This wooden outdoor structure features a spacious 25.21 m² interior plus an 8.84 m² covered terrace, offering the perfect balance of indoor comfort and outdoor living.

What's Included?

  • DIY kit
  • Closed shell
  • Arrives in flatpack
  • Internal walls included
  • Doors & windows included
  • Roofing cover & rain gutters as an extra

Specifications

  • Indoor area: 369.2 ft²
  • Log profile: 2.76 in
  • Number of floors: 1
  • Number of rooms: 1
  • Base dimensions: 13.94 ft x 20.51 ft
  • Floor space 1 floor: 270.17 ft²
  • Floor Material: 1.1 in
  • Terrace Area: 99.03 ft²
  • Roof Type: Flat roof
  • Floor included: Yes
  • Wood type: Nordic spruce, massive logs
  • Ridge height: 8.42 ft
  • Roof area: 497.29 ft²
  • Eave Height: 7.97 ft
  • Doors Included: Yes
  • Windows Included: Yes
  • Roof Shingles Included: No
  • Roof Slope: 1.8°
  • Roof Material: Nordic spruce

Features

  • Spacious Interior: The 25.21 m² indoor area offers plenty of room for lounging, working, or hosting guests comfortably.
  • Covered Terrace: An additional 8.84 m² covered outdoor section provides shade and shelter, ideal for outdoor dining or relaxation.
  • Full-Glass Sliding Doors: Floor-to-ceiling aluminum-framed glass panels let in maximum light and connect the indoors with the surrounding garden.
  • Durable Materials: Built with strong Nordic spruce and powder-coated aluminum, it’s designed to withstand the elements for long-lasting use.
  • Multi-Use Flexibility: Whether it’s a garden office, guest room, yoga studio, or entertainment hub, it adapts to your lifestyle.
  • Easy Access: Smooth sliding doors make entry effortless and allow for a wide, open feel during gatherings or quiet retreats.
  • Year-Round Comfort: The solid wood structure and optional insulation make it suitable for use in all seasons.

Internal Room

The Internal Room includes an assembly kit designed for easy installation inside a finished garden building. It features a sliding door and ceiling, creating a fully enclosed space.

The kit also comes with two solid 1.1-inch walls, a corner support beam, and all the necessary fixings, conveniently packed flat for transport.

Closet: 3.98 ft x 5.95 ft

Bathroom: 3.98 ft x 7.92 ft

Staining/Painting Treatment

Extend the life of your outdoor freedom room and protect it from environmental damage with premium wood treatment.

Benefits include:

  • Shields wood from rot, mold, and staining fungi
  • Guards against UV rays and rain
  • Prolongs the durability of wooden surfaces
  • Enhances appearance and makes cleaning easier

Recommended high-end wood staining products:

  • Cabot Australian Timber Oil – Known for deep penetration and rich, long-lasting color; ideal for decks, siding, and outdoor structures.
  • DEFY Extreme Wood Stain – A water-based, eco-friendly stain with high UV resistance and durable protection for harsh outdoor conditions.

Downloads

Why Choose Outdoor Freedom Rooms?

We use premium Nordic/Baltic Spruce

These softwoods thrive in the cold northern regions of Europe and grow more slowly than standard spruce, pine, or fir, resulting in 6 to 8 times more growth rings. Spruce features a finer grain and fewer, smaller knots than Pine, though both types are lightweight and easy to machine.

Comes with a 5-year anti-rot warranty

It includes a 5-year anti-rot warranty that begins the moment your order ships. This covers issues such as glass or hardware seal failures, wall log splitting, or faulty components.

Unloading is included in the delivery

Receive your new log house hassle-free, our delivery service handles the unloading at no extra cost.

Fast delivery for in-stock items

Have your freedom rooms delivered right to your doorstep! In-stock models arrive in 10–12 weeks.

About Garden House 24 Timber Garden Products

Born from a passion for precision craftsmanship, Garden House 24 brings decades of timber-building expertise to your backyard. What began as a small European workshop has grown into a trusted source for high-quality garden rooms, sheds, and cabins. Built to last and designed to inspire, our timber products combine durability with timeless style.

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