For the same 11 m trailer home, we compare what is actually included.
| Item |
Maker A (anonymous)
Mainland spec
|
Park Homes Okinawa
Incl. tax, Okinawa spec
|
|---|---|---|
| Chassis | ||
| H-beam steel | ✓ | ✓ |
|
Rust protection: hot-dip galvanizing
※3
Fully immersed at a dedicated plant after the frame is completed ▶ Watch the Video |
✕ | ✓ |
| Frame | ||
| Timber frame | ✓ | — |
| Light-gauge steel frame | ✕ | ✓ |
| Designed for a 20-year real service life | Not stated | ✓ |
| Roof | ||
| Galvalume steel sheet | ✓ | — |
| Galvalume steel sheet (Okinawa coastal spec) | ✕ | ✓ |
| Exterior walls | ||
| Metal siding | ✓ | — |
| Fiber-cement siding (ventilated construction) | ✕ | ✓ |
| Window sashes & fittings | ||
| Okinawa spec (high wind-pressure sashes) S-4 or higher / W-5 | ✕ | ✓ |
| Insulation & airtightness | ||
| Glass wool 16K | ✓ | — |
| Glass wool 32K | ✕ | ✓ |
| Interior | ||
| Interior finishing work Timber substrate (insect- and rot-proofed) | ✕ | ✓ |
| Electrical (outlets and lighting) | ✓ | ✓ |
| Water supply and drainage piping | ✓ | ✓ |
| Prefabricated bathroom unit | ✓ | ✓ |
| Kitchen | ✓ | ✓ |
| Vanity unit | ✓ | ✓ |
| Washing machine pan | ✓ | ✓ |
| Toilet | ✓ | ✓ |
| Manufactured locally in Okinawa After-sales support | ✕ | ✓ |
| Price (unit price for reference, excl. transport/temporary works) | ||
| Unit price *Excluding transport and temporary works |
Mainland spec
From ¥11,000,000
|
Incl. tax, Okinawa spec
¥14,750,000
|
| Transport and installation cost Varies with site and terrain; approximate | ¥2,200,000 | ¥550,000 |
| Typhoon protection work Approximate | △ | ¥220,000 |
| Temporary works & site costs Varies with site conditions | △ | △ |
*1 The Park Homes Okinawa figure is the unit price (incl. tax), excluding transport and installation (¥400,000) and temporary works (¥220,000).
*2 △: cost varies with the site, terrain and access route, so this is quoted separately.
*3 After the frame is fully assembled, machined and drilled, it is taken apart again and hot-dip galvanized at a dedicated plant. This removes 99.99% of what causes rust (we prioritize quality even though it means doing the work twice).
*The Maker A figure is the skeleton unit price (incl. tax) published on their official site. Plumbing, interior and Okinawa-spec options must be added separately.
*Typhoon protection work and gas work are quoted separately by both companies.