WH SERIES
Two-storey knock-down house with external stair, WH series, 3.00 × 6.00 m, 36 m² usable
Two-storey knock-down house, WH series. Two 3.00 × 6.00 × 2.69 m units stacked, 36 m² usable in total, with external steel stair, upper balcony and air conditioning. 379,000 THB (10,530 THB/m²). Built in our own factory and on display at the showroom.
As shown in the photos — doors and windows can be added, removed or repositioned to order.
Factory price
฿379,000(10,530 THB/m²)
Factory price · negotiable by quantity · on display at the showroom
Same price per square metre, not the same building
Quotes for site-built prefab buildings are typically 5,500–9,000 THB per square metre — but that figure leaves some things out.
| Container To Build knock-down unit | Typical site-built prefab | |
|---|---|---|
| Floor | Floor frame and flooring included — no concrete slab needed | A concrete slab must be poured first, charged separately |
| Walls | PU-foam insulated walls and ceiling | Often steel sheet and board only, no insulation |
| Electrics | Wired in our factory | Depends on the quote |
| Installation | Craned in and installed in one day | Several days to several weeks |
| Relocation | Lift and move the whole unit | Dismantle and rebuild |
Before comparing quotes, ask these four questions
- Is the concrete slab or foundation included?
- Are the walls insulated?
- Is the electrical work included?
- Can it be moved after the project ends?
Put all four into each quote, then compare the totals. See the floor and the wall core for yourself at our showroom.
Everything you should know before buying
We write this on every page because it matters to your decision.
- Condition: new, built in our own factory.
- This price includes the steel frame, PU-foam insulated walls and ceiling, floor, wiring and TOSTEM doors and windows.
- The floor is built in — no concrete slab is needed, only level ground. Most site-built prefab needs a concrete slab first, charged separately.
- This price does not include delivery or crane unloading, which are quoted by distance to your site before you decide.
- This product is several units joined together. It cannot be moved as one piece: the joints are taken apart, each unit is transported separately, and they are joined again on site.
- A knock-down unit is not a permanent masonry building. With normal care it lasts 20–30 years; Thailand's 2026 construction-cost appraisal table gives knock-down houses a 20-year life and masonry houses 50.
- Whether a building permit is needed depends on local regulations and the local authority decides — check before ordering. If you need to apply, we prepare the documents (paid service).
- It can be moved to a new site by separating it into single units first and rejoining them there — no walls are demolished. Suited to leased land.
- A unit you buy never ends up as scrap: you can move it, resell it or sell it back, so it keeps its value — unlike a building fixed to the land, which has to be demolished when you no longer need it.
- We buy back WH-series units according to condition when you no longer need them.
- Lead time: 2–3 days from stock, 3–7 days if built to order, installed on site in one day.
- Payment: credit-card instalments are available, subject to your card issuer's terms.
- You can check every point above in person — including the floor and the wall core — at our Bangna and Suwinthawong showrooms.
Showroom
A purchase of around 100,000 baht — see the real thing first.
We would love to show you around the showroom: open the doors, compare models side by side, then decide.
Product details
Two-storey knock-down house, WH series, 3.00 × 6.00 m
This two-storey knock-down house is built from two 3.00 × 6.00 × 2.69 m units stacked on top of each other, giving 36 m² of usable floor while taking up the same ground area as a single unit. It suits plots where space is limited but twice the floor area is needed. An external steel stair and a full-length upper balcony provide access without giving up any internal floor space to a staircase.
Highlights
- 36 m² of usable floor in total (18 m² per storey) on a single-unit footprint
- External steel stair with handrail and landing — no internal floor space lost
- Full-length upper balcony with safety railing
- Air conditioning already fitted and ready to use
- Insulated sandwich panel walls and roof on a painted steel frame
- Glazed-top doors and sliding windows on both storeys
- Set on concrete beams — no foundation pour, no build time
- Knock-down structure: demountable and relocatable later
Where it fits
- Resorts, homestays and holiday houses needing several rooms on a small plot
- Staff accommodation and on-site housing that needs separate floors
- Project offices with a reception level below and working space above
- Any site that needs more floor area but cannot expand sideways
Specification
- Unit size 3.00 × 6.00 × 2.69 m per storey, two storeys
- 36 m² usable floor in total
- Walls and roof in insulated sandwich panel
- External steel stair and upper balcony included in the price
- Air conditioning included in the price
- New condition, built in our own factory
- Delivered and installed nationwide
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