1. General technical description for standard prefabricated house
Technical Parameter:
Technical Parameter of standard prefabricated house:
(1). Wind resistance: Grade 11(wind speed≤ 120km/h)
(2). Earthquake resistance: Grade 7
(3). Live load capacity of roofing: 0.6kn/m2
(4). External and internal wall heat transmission coefficient: 0.35Kcal/m2hc
(5). Second Floor Load Capacity: 150 kg/m2
(6). Live load of corridor is 2.0kn/ m2
(7). Wall permitted loading: 0.6KN/ m2
(8). Ceiling Permitted live loading: 0.5 KN/m2
(9). Wall Coefficient of thermal conductivity: K=0.442W/m2k
(10). Ceiling Coefficient of thermal conductivity: K=0.55W/ m2K

Steel framework

Main column: Fabricated by 80*80 or 100*100 or 120*120 or 150*150 Square Tube, Q235 Steel Surface working: Alkyd painting, two primary and two surface.

Main triangle Beam: Fabricated by C80, C100, C120, C140 Section steel, Q235 Steel, Surface working: Alkyd painting, two primary and two surface.

Wall and roof purlin: C80, C100, C120, C140 Section steel, Q235 Steel,

Surface working: Galvanized

Floor
Ground floor will be the concrete foundation with Ceramic tiles or PVC floor leather.
First floor: 18mm plywood with 2.0mm PVC floor leather for living rooms floor

Ceiling
6mm Gypsum board for dry room
12mm PVC ceiling for wet room

Walls
Insulated Steel Sandwich Panel wall
Panel width: 950mm;
Thickness: 50-1200mm.
Powder coated Color steel on both sides: 0.4mm/0.5mm/0.6mm
Insulation: Polystyrene, Rockwool or Polyurethane
Density of Rockwool: 120Kg/m3
Density of Polystyrene: 12Kg/m3, 16KG/M3 20KG/M3
Density of Polyurethane: 40Kg/m3

Door
External door: Insulated with opening dimension 950*2100mm, furnished with lock, with 3 keys.
Inner door: Insulated steel door.

Windows
Window material: PVC window with fly screen, 4mm glass.

Electrical fittings option
Electrical wire, 2.5mm2 for lighting system, and 4mm2 for AC units.
16A five hole universal socket.
Double tube fluorescent lamp, 220V, 50-60Hz
Single Switch, Honyar brand, with junction box
Electrical distribution box, box+breakers+earth leakage protective device

Optional Water system fittings
(1). Water drain pipe, PPR pipe, dim 16-20mm, connection fittings are made of copper, life span over 10 years.
Exhaust fan or air exchange hole, size 250mm*250mm made of steel or PVC
(2). Sanitary ware:
Western Close tool: Ceramic, with pipes and installation fittings
Urinal: Ceramic, with pipes and installation fittings
Wash basin: Ceramic, with post, faucet, pipes and installation fittings
Shower head, Shower base, Water mixture

Temporary building Characteristics:
(1). Environment protective, no garbage caused
(2). Doors, windows and interior partitions can be flexibly fixed
(3). Beautiful appearance, different colors for the wall and roof.
(4). Cost saving and transportation convenient
(5). Anti-rust and normally more than 15 years using life
(6). Safe and stable, can stand 8 grade earthquake.

2. Our Services:
(1). Professional design and engineering team: Full solution for site camp design. We could make the design for whole camp as per your requirement.
(2). Procurement and Manufacture for all material for prefabricated building. We have a professional procurement team to make sure all the materials are with good quality. And our factory operation under ISO/CE/SGS standard, to make sure the fabrication works with high technology.
(3). Site management & Installation supervision, We could send our engineers to help for the installation supervision, you just need to prepare a team which know normal construction works will be OK.

How to Buy a VHCON Prefab House?

Step 1: Initial Enquiry or Display Hall Visit

Start by contacting the VHCON sales team for a no-obligation chat about your project. We’ll walk you through the options, answer any questions, and explain what’s involved with owning a VHCON Modular House.

You can also book a private tour at our Display Hall to view our houses in person.

Whether you’re still planning or ready to move ahead, this first step is all about giving you clarity, confidence, and expert advice from the start.

Step 2: Site Suitability & Pre-Approval Check

Once you’re ready to proceed, we’ll connect you with our trusted Building Certifier and Structural Engineer for a preliminary assessment. Alternatively you can provide your own preliminary assessment from a town planner or building certifier to assess eligibility.

You will need to provide your own site plan to conduct a preliminary assessment. This preliminary assessment helps identify any potential planning restrictions, zoning issues, or site challenges early on — such as setbacks, overlays, wind speed, and climate zone.

This step ensures you have confidence that your project is likely to meet council and building code requirements before moving further into the approvals process.

Step 3: Contract Signing & Initial Deposit

Once your site has been deemed suitable and you’re ready to move forward, we’ll prepare your Build Contract.

This contract will outline:

• The scope of works and what’s included in your Expander Home package
• Customisations (if any) and your selected finishes
• Estimated timeframes for manufacturing, delivery, and installation
• Payment terms, including deposit and progress payments

To secure your place in our production schedule, a non-refundable initial deposit is required upon signing. This deposit confirms your commitment and allows us to begin the next steps — including final plans, engineering, and scheduling your batch build.

Note: We’ll ensure you have ample time to review and understand all contract details, and we’re here to answer any questions before you sign.

Step 4: Factory Construction

Once your contract is finalised, your home enters our scheduled production process. Built in controlled factory conditions by our trusted manufacturing partners, this approach ensures consistent quality, weather protection, and reliable delivery timelines.

The Express Portables design team oversees all aspects of compliance, workmanship, and detail throughout the build. Construction typically takes 9–11 weeks to complete.

Step 5: Shipping, Transport & Delivery

Once factory construction is complete, your home is carefully prepared for shipment. International shipping from our manufacturing facility typically takes 4–5 weeks.

Transport to your site is scheduled in coordination with you or your site builder. Your builder is responsible for unloading the building onto the prepared footings and beginning the installation process.

After installation, the customer is required to arrange the final Occupancy Certificate, with guidance and support provided by our Building Certifier to ensure a smooth approval process.