WL SERIES
Two-storey knock-down house with internal stair, WL series, 3.00 × 6.00 m, 36 m² usable
Two-storey knock-down house, WL series, with the staircase inside the building. Two 3.00 × 6.00 × 2.69 m units stacked, 36 m² usable in total, grey panel finish with a front awning. 390,000 THB (10,830 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
฿390,000(10,830 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.
- 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 with internal stair, WL series, 3.00 × 6.00 m
The WL model stacks two 3.00 × 6.00 × 2.69 m units for 36 m² of usable floor. What sets it apart is that the staircase sits inside the building rather than being bolted to the outside. The facade stays clean and reads as a single house, with no external steel stair frame, and you move between floors without stepping outside into sun or rain.
How it differs from the external-stair model
- Stair inside the house, with a white safety railing around the floor opening upstairs
- No need to step outside to move between floors — better for daily use and wet weather
- Cleaner exterior with no stair or balcony structure attached outside
- Front awning between the floors, shading the ground-floor entrance
- The trade-off is the floor area given over to the stair opening
Specification
- Insulated sandwich panel walls and roof in grey, on a black painted steel frame
- Sliding glass door on the ground floor, sliding windows on both storeys
- Electrical system ready to use, with ceiling lights and power outlets
- Extractor fan for heat and odour
- Vinyl tile flooring, easy to clean
- Internal door dividing the space
- Front awning
Where it fits
- Houses and resorts that should look like a real building, not stacked units
- Project offices with reception below and working space above
- Daily use where an outdoor staircase would be inconvenient
- Small plots that need twice the floor area
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