20ft Flat Pack Granny Flats
Size: 5900x2260x2550mm, 13sqm, 139sq.ft
Installation: Free Installation
What in Box: bathroom, toilet, handwash cabinet, shower head, 1 bedroom, assembled plumbing and electricity system.
Shipment: one 40HQ can fit 2 sets.
Certificates: NATA, SAA, WMK, UL, CE, ISO, etc.
Hebei Tianyu Guangbo Module Housing Co., Ltd. is one of the leading manufacturers and suppliers of 20ft flat pack granny flats in China, also supports custom service. Welcome to buy waterproof 20ft flat pack granny flats for sale here from our factory. Quality products and reasonable price are available.
Products Description
20FT Flat Pack Granny Flat – Smart. Stackable. Ready When You Are.
The Modular Solution for ADUs, Workspaces & Rental Income – Delivered in a Box
TYGB 20FT Flat Pack Granny Flat is a next-generation modular building system engineered for speed, flexibility, and long-term value.
Whether you need an accessory dwelling unit (ADU), a home office, a rental studio, or a scalable storage solution, this compact yet spacious unit delivers turnkey functionality in just hours-not weeks.
TYGB 20ft flat pack granny flats is Perfect for:
Urban homeowners seeking rental income
Developers building modular housing projects
Entrepreneurs launching pop-up businesses
Governments or NGOs deploying emergency or transitional housing
Customer Cases
Products Specifications
| Feature | Specification |
|---|---|
| Internal Dimensions | 5.7m x 2.05m x 2.52m |
| External Dimensions | 5.9m x 2.26m x 2.55m |
| Weight | Approx. 3500 kg |
| Structure | Galvanized steel frame 4mm steel pipes + Fireproof EPS Sandwich wall panels |
| Insulation | 75mm EPS/Rockwool panels |
| Waterproofing | 99.99% |
| Soundproofing | ≥30dB |
| Fire Resistance | B1 |
| Earthquake Resistance | Level 8 |
| Stackability | Up to 3 stories |
| Customization Options | Exterior cladding, flooring, trailer, eco deck, light steel roogfing, awning, door lights, etc. |
Customized Options
We offer OEM/ODM support for architects, developers, and brands.
Choose interior layout: open plan, partitioned, lofted
Select finishes: Exterior Cladding, SPC Click Flooring, bathroom tiles, Interior Decoration Panel, Bathroom type.
Add-ons: AC pre-wiring, smart locks, off-grid solar system, roof, eco deck, door lights, awing, etc.
Branding: your logo, Frame color, and labels
What's Included in our flat pack Prefab Homes?
0-1 Bedroom
1 Dry and wet Bathroom with Vanity cabinet, toilet, shower
1 Kitchen with Cabinets, sink, water fittings
LED Ceiling Lights
electrical Outlets (AU/NZ/US/EU, CE, UL certified)
1-3 Windows – One in bathroom, one in kitchen, one standard window
Window Sizes: 930*1100mm
1 Sliding Glass Entry Door
1 Flat Door for Bathroom
Flooring Installed
Plumbing Pre-installed (water supply & drainage)
High-Quality Insulated Walls
Why Choose Our 20ft flat pack granny flats?
Engineered for Durability. Built for Life.
All materials are selected for longevity, performance, and low maintenance.
Frame: Q235B galvanized steel – resistant to rust, warping, and seismic stress
Walls: 50mm sandwich panels – thermal insulation, soundproofing, and fire rating (A-class optional)
Doors & Windows: Aluminum-framed sliding or hinged doors, double-glazed options
Roof: 0.5mm Corrugated Steel – UV-resistant, anti-leak, 25-year lifespan
Fasteners & Hardware: Stainless steel – corrosion-resistant in coastal or humid environments
Tested for wind loads up to 120 km/h and snow loads up to 1.5 kN/m².
Why choose us?
We spare no effort to use better raw materials because we have learned from too many customers that they are saddened by water leaks, unstable structures, and poor after-sales service.
Meanwhile, I sincerely invite you and your partners to visit our factory. Seeing is believing.
We are very confident because:
√ 90% of resellers start orders immediately after visiting our factory
√ 85% repurchase
√ 46000sqm factory
√ Production capacity: 3000 sets per year
Contact us
Ready to transform your backyard into a functional and beautiful extension of your home?
We offer full customization options, including color, layout, insulation levels, and additional modules.
Our address(Welcome to visit our factory)
North of Xingwang Road and west of Wuguan Road in Wuyi County, Hengshui City, Hebei Province.
Phone Number
+86 132-9058-8365
jasonyao@tygbhouse.com
Looking for a reliable manufacturer of Backyard Pods Flat Pack Prefab Houses, Contact us now.
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