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Prefab 30FT Expandable Container House Portable Modular Unit For Backyard Granny Flat 1

Prefab 30FT Expandable Container House Portable Modular Unit For Backyard Granny Flat 2

Prefab 30FT Expandable Container House Portable Modular Unit For Backyard Granny Flat 3

Prefab 30FT Expandable Container House Portable Modular Unit For Backyard Granny Flat 4

Prefab 30FT Expandable Container House Portable Modular Unit For Backyard Granny Flat

A granny flat gives your family more room without putting anyone in a nursing home, a spare bedroom, or a rental across town. This one arrives finished — both sides open on site into a full-width, single-level home with its own entrance, kitchen, and bathroom. No building project in your backyard, no months of trades walking through your garden.

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Product Description

A expandable granny flat is a factory-built secondary dwelling that ships folded to standard cargo width and opens on site in two directions — the long sides unfold to create a single wide room, rather than a narrow container interior.

On the 30ft model, that produces roughly 560–600 sq ft of finished, single-level living space with a clear span across the living area. It arrives with walls, roof, windows, doors, wiring, lighting, plumbing, and bathroom already installed, so site work is limited to a level base and service connections.

Product parameters

Expanded floor area	About 56 m²	Length	30 ft (approx. 9 m)
Layouts	1–2 bedrooms + living, kitchen, and full bathroom; single level, no stairs	Other unit types	Canteen and mess hall, site office, recreation room, training room, ablution block
Structure	Hot-dip galvanized high-strength steel frame; built for repeated relocation	Insulation	50–75 mm steel-faced panels; EPS, rock wool, or fire-rated cores
Power	Grid connection ready; solar and battery for sites without service

Typical Home Layouts

40ft 3room

40ft 2room

30ft 3room

30ft 2room

20ft 2room

20ft 1room

Common Configurations

These are the setups we build most often. Layouts, bed counts, and fixtures are made to order.

Roof

Insulation board; sealed joints; flat roof as standard, pitched roof optional

Walls

Steel-faced sandwich panels, 50–75 mm, with EPS, rock wool, or PU core; insulated internal partitions

Floor

Cement fiber base board with finished flooring — PVC as standard; SPC or laminate optional

Doors & windows

Insulated entrance door; interior doors to suit the layout; aluminum windows, with screening available

Electrical

Complete wiring system with circuit breakers, LED lighting, and sockets for lighting, air conditioning, and general use; US, EU, or AU standard

Plumbing & bathroom

Bathroom module with shower, toilet, basin, and waterproof panels; supply and drainage lines pre-installed

fAQ

1. Is it suitable for someone with limited mobility?

It's a single-level unit with step-free entry, wide doorways, and bathroom walls that can be reinforced for grab bars and a shower seat. A ramp or low-threshold entry can be specified. Confirm any accessibility requirements with your local authority if approval depends on them.

2. Do I need planning permission or a permit for a granny flat?

In most areas, yes — granny flats are treated as a second dwelling and need approval, though some jurisdictions offer fast-track or complying-development pathways.

3. How much space does it need in the backyard?

The unit itself needs a level area of roughly 9 m × 6.2 m once open , plus access for a crane. Setback and site-coverage rules decide where on the block it can sit. Send us your site plan and we'll mark up a suggested position.

4. What's your lead time/delivery time?

Production takes 30-45 days after deposit confirmed.

5. Do you provide installation guide?

Don’t worry. Full manuals & real installation videos are included with all nail positions marked. Message us ahead for support due to time difference; we’ll assist via guide videos or live video calls on time.