standard tier · 72 briefs · 1,368 runs · results db2e24e

CityFormGen

Generative and optimisation methods for middle housing, compared under matched compute

RESEARCH GENERATIVE-DESIGN BENCHMARK - NOT CONSTRUCTION DOCUMENTATION OR CODE CERTIFICATION.

B0004 · knee point · seed 1

B0004-sketch-1-435

Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0004

Plan drawing of a rowhouse on a 18.5 by 25.0 metre lot, 2 storeys, 3 dwellings, 27 rooms. Dwelling U0 (2BR) has 9 rooms totalling 193 square metres. Dwelling U1 (2BR) has 9 rooms totalling 90 square metres. Dwelling U2 (2BR) has 9 rooms totalling 95 square metres. Building footprint 189 square metres; open space 270 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.81, privacy 0.92, circulation 0.47, carbon 0.83, cost 0.52.
B0004 · sketch · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a rowhouse on a 18.5 by 25.0 metre lot, 2 storeys, 3 dwellings, 27 rooms. Dwelling U0 (2BR) has 9 rooms totalling 193 square metres. Dwelling U1 (2BR) has 9 rooms totalling 90 square metres. Dwelling U2 (2BR) has 9 rooms totalling 95 square metres. Building footprint 189 square metres; open space 270 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.81, privacy 0.92, circulation 0.47, carbon 0.83, cost 0.52.

Objective vector

Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.

density
0.995
daylight
0.810
privacy
0.921
circulation
0.473
carbon
0.828
cost
0.523

Reported quantities

FAR proxy (GFA / lot)
0.82
site utilisation
0.997
gross floor area, m²
377.2
footprint, m²
188.6
carbon proxy, kgCO₂e/m² (A1–A3)
322
cost index / m² (unitless)
2.49
worst habitable room, daylight
0.552
circulation share of GFA
26%
open space, net of parking
59%
courtyard void, m²
0.0
plumbing stacks
5
footprint corners
4
preferred adjacencies met
50%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension passed
  • C06max room aspect passed
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency passed
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision passed
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U02BR192.89
U12BR89.99
U22BR94.59
All 27 rooms
RoomTypeDwellingStoreyw × h m
STAIR:U0@0circulationU0021.41.80 × 11.90
STAIR:U0@1circulationU0121.41.80 × 11.90
U0@0#2kitchenU0046.36.30 × 7.35
U0@0#3bathroomU007.11.55 × 4.55
U0@0#1livingU0012.72.80 × 4.55
U0@0#0entryU008.91.95 × 4.55
U0@1#7bathroomU0141.06.30 × 6.50
U0@1#6bedroom secondaryU0118.13.35 × 5.40
U0@1#5bedroom primaryU0115.92.95 × 5.40
STAIR:U1@0circulationU106.41.10 × 5.80
STAIR:U1@1circulationU116.41.10 × 5.80
U1@0#1livingU1011.43.35 × 3.40
U1@0#0entryU108.03.35 × 2.40
U1@0#2kitchenU1010.73.30 × 3.25
U1@0#3bathroomU108.43.30 × 2.55
U1@1#5bedroom primaryU1111.83.75 × 3.15
U1@1#6bedroom secondaryU119.12.90 × 3.15
U1@1#7bathroomU1117.66.65 × 2.65
STAIR:U2@0circulationU2010.87.75 × 1.40
STAIR:U2@1circulationU2110.87.75 × 1.40
U2@0#0entryU205.64.45 × 1.25
U2@0#1livingU2015.44.45 × 3.45
U2@0#3bathroomU205.43.30 × 1.65
U2@0#2kitchenU2010.13.30 × 3.05
U2@1#5bedroom primaryU2114.13.00 × 4.70
U2@1#6bedroom secondaryU2113.42.85 × 4.70
U2@1#7bathroomU218.91.90 × 4.70

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