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.

B0016 · density-optimal · seed 0

B0016-sketch-0-1102

Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0016

Plan drawing of a rowhouse on a 22.6 by 27.6 metre lot, 2 storeys, 3 dwellings, 29 rooms. Dwelling U0 (2BR) has 9 rooms totalling 107 square metres. Dwelling U1 (3BR) has 11 rooms totalling 166 square metres. Dwelling U2 (2BR) has 9 rooms totalling 304 square metres. Building footprint 288 square metres; open space 334 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.96, daylight 0.66, privacy 0.88, circulation 0.49, carbon 0.90, cost 0.81.
B0016 · sketch · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a rowhouse on a 22.6 by 27.6 metre lot, 2 storeys, 3 dwellings, 29 rooms. Dwelling U0 (2BR) has 9 rooms totalling 107 square metres. Dwelling U1 (3BR) has 11 rooms totalling 166 square metres. Dwelling U2 (2BR) has 9 rooms totalling 304 square metres. Building footprint 288 square metres; open space 334 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.96, daylight 0.66, privacy 0.88, circulation 0.49, carbon 0.90, cost 0.81.

Objective vector

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

density
0.957
daylight
0.663
privacy
0.880
circulation
0.493
carbon
0.901
cost
0.814

Reported quantities

FAR proxy (GFA / lot)
0.92
site utilisation
0.972
gross floor area, m²
576.6
footprint, m²
288.3
carbon proxy, kgCO₂e/m² (A1–A3)
296
cost index / m² (unitless)
2.04
worst habitable room, daylight
0.179
circulation share of GFA
43%
open space, net of parking
54%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
63%

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
U02BR107.19
U13BR165.611
U22BR304.09
All 29 rooms
RoomTypeDwellingStoreyw × h m
STAIR:U0@0circulationU007.31.25 × 5.85
STAIR:U0@1circulationU017.31.25 × 5.85
U0@0#3bathroomU009.13.65 × 2.50
U0@0#2kitchenU0012.23.65 × 3.35
U0@0#0entryU0012.14.25 × 2.85
U0@0#1livingU0012.84.25 × 3.00
U0@1#7bathroomU0123.37.90 × 2.95
U0@1#5bedroom primaryU0113.34.60 × 2.90
U0@1#6bedroom secondaryU019.63.30 × 2.90
STAIR:U1@0circulationU1010.41.15 × 9.05
STAIR:U1@1circulationU1110.41.15 × 9.05
U1@0#3kitchenU1014.82.60 × 5.70
U1@0#1livingU1018.23.20 × 5.70
U1@0#2diningU109.12.20 × 4.15
U1@0#4bathroomU103.42.20 × 1.55
U1@0#0entryU1026.88.00 × 3.35
U1@1#7bedroom secondaryU119.32.75 × 3.40
U1@1#9bathroomU1115.52.75 × 5.65
U1@1#6bedroom primaryU1118.95.25 × 3.60
U1@1#8bedroom secondaryU1128.65.25 × 5.45
STAIR:U2@0circulationU2069.910.20 × 6.85
STAIR:U2@1circulationU2169.910.20 × 6.85
U2@0#2kitchenU2013.63.10 × 4.40
U2@0#1livingU2011.33.10 × 3.65
U2@0#0entryU2031.03.85 × 8.05
U2@0#3bathroomU2026.23.25 × 8.05
U2@1#6bedroom secondaryU2117.64.45 × 3.95
U2@1#5bedroom primaryU2122.75.75 × 3.95
U2@1#7bathroomU2141.810.20 × 4.10

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