Scale study (generated)
Generated by python model/scale_study.py. Do not edit by
hand. The flagship design at 14 to 50 houses: the same plots, 7 m
spacing, ring road, natural park, one club and one gate; layouts from
scripts/layout.py (smallest site that passes its checks), costs from
model/cost_model.py (flagship_estate). Plant, technical
team and office scale from the 14-house estate by (n / 14) ^ 0.6
(six-tenths rule [72]); the
gate, the club and the workshop do not grow. Land at 4.80 M THB per rai
throughout. All figures THB, estimates, 2026 prices, premium spec,
all-inclusive rent.
| Houses | 14 | 20 | 30 | 40 | 50 |
|---|---|---|---|---|---|
| Type A / Type B / Type C (corners) | 8 / 2 / 4 | 11 / 5 / 4 | 17 / 9 / 4 | 23 / 13 / 4 | 29 / 17 / 4 |
| Site, m2 (rai) | 27,054 (16.9) | 30,942 (19.3) | 38,718 (24.2) | 47,790 (29.9) | 54,918 (34.3) |
| Ring road centre line, m | 316 | 374 | 465 | 572 | 657 |
| Natural park, m2 | 3,509 | 3,852 | 5,713 | 8,156 | 8,882 |
| Perimeter trail, m; green lanes; fitness stations | 606; 4; 10 | 654; 4; 10 | 750; 4; 11 | 862; 8; 13 | 950; 10; 14 |
| Land per Type A house incl. its share of roads, park, club, m2 | 1,784 | 1,422 | 1,207 | 1,127 | 1,036 |
| Estate infrastructure, M THB | 70.69 | 78.36 | 92.30 | 107.09 | 118.45 |
| Infrastructure per house | 5,049,643 | 3,917,900 | 3,076,633 | 2,677,300 | 2,368,940 |
| Central battery, kWh | 170 | 240 | 330 | 440 | 530 |
| Technical team, FTE | 2.5 | 3.5 | 4.5 | 5 | 6 |
| Guard positions | 3 | 3 | 3 | 4 | 4 |
| Type A all-in cost | 19,873,515 | 17,325,437 | 15,602,430 | 14,853,800 | 14,182,468 |
| of which land | 5,512,119 | 4,395,216 | 3,731,072 | 3,483,048 | 3,200,993 |
| of which estate infrastructure | 5,049,643 | 3,917,900 | 3,076,633 | 2,677,300 | 2,368,940 |
| Type A running costs per month | 38,500 | 34,201 | 29,618 | 27,675 | 25,913 |
| ... Technical team, consumables, repairs, reserve | 16,847 | 16,888 | 15,596 | 14,666 | 14,319 |
| ... Estate systems | 6,268 | 5,169 | 4,316 | 3,836 | 3,441 |
| ... Electricity | 702 | 516 | 345 | 321 | 275 |
| ... Guards | 5,159 | 3,611 | 2,408 | 2,408 | 1,926 |
| ... Common services | 5,927 | 4,698 | 3,801 | 3,355 | 2,932 |
| ... Insurance and land tax | 3,598 | 3,319 | 3,153 | 3,091 | 3,020 |
| Type A rent for 5 % net | 144,000 | 126,000 | 112,000 | 106,000 | 101,000 |
| Type A rent for 4 % net | 124,000 | 109,000 | 97,000 | 92,000 | 87,000 |
| Type A rent for 5 % net vs 14 houses | +0% | -12% | -22% | -26% | -30% |
| Type A rent for 5 % net with a second padel hall and 2 courts (+6.10 M) | 147,000 | 128,000 | 113,000 | 107,000 | 102,000 |
| Type B all-in cost | 22,021,891 | 19,473,813 | 17,750,805 | 17,002,176 | 16,330,843 |
| Type B rent for 5 % net | 158,000 | 141,000 | 127,000 | 121,000 | 115,000 |
| Type C corner plot, m2 (mean) | 897 | 942 | 864 | 838 | 865 |
| Type C all-in cost | 27,070,683 | 24,665,827 | 22,694,569 | 21,863,189 | 21,277,790 |
| Type C rent for 5 % net | 194,000 | 177,000 | 162,000 | 156,000 | 151,000 |
| Capital, whole estate, M THB | 311.31 | 386.61 | 515.78 | 650.12 | 774.03 |
How the houses sit: four rows along the ring road, the two outer rows facing the street from outside the ring and the two inner rows backing onto the park. The site is the smallest that fits the design; the corner plots (Type C) run on to the belt or the club.
| Houses | North outer row | North inner row | South inner row | South outer row | Type A / B / C | Site, east-west x north-south |
|---|---|---|---|---|---|---|
| 14 | 4 | 3 | 3 | 4 | 8 / 2 / 4 | 167 x 162 m |
| 20 | 5 | 5 | 5 | 5 | 11 / 5 / 4 | 191 x 162 m |
| 30 | 8 | 7 | 7 | 8 | 17 / 9 / 4 | 239 x 162 m |
| 40 | 11 | 9 | 9 | 11 | 23 / 13 / 4 | 295 x 162 m |
| 50 | 13 | 12 | 12 | 13 | 29 / 17 / 4 | 339 x 162 m |