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.

B0010 · circulation-optimal · seed 2

B0010-nsga2-2-1113

NSGA-IID · meets all 17 benchmark constraints. Brief B0010

Plan drawing of a rowhouse on a 24.4 by 28.2 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 135 square metres. Dwelling U1 (2BR) has 9 rooms totalling 117 square metres. Dwelling U2 (2BR) has 9 rooms totalling 123 square metres. Dwelling U3 (2BR) has 9 rooms totalling 131 square metres. Building footprint 253 square metres; open space 425 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.71, daylight 0.66, privacy 0.87, circulation 0.61, carbon 0.85, cost 0.42.
B0010 · nsga2 · seed 2scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a rowhouse on a 24.4 by 28.2 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 135 square metres. Dwelling U1 (2BR) has 9 rooms totalling 117 square metres. Dwelling U2 (2BR) has 9 rooms totalling 123 square metres. Dwelling U3 (2BR) has 9 rooms totalling 131 square metres. Building footprint 253 square metres; open space 425 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.71, daylight 0.66, privacy 0.87, circulation 0.61, carbon 0.85, cost 0.42.

Objective vector

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

density
0.713
daylight
0.665
privacy
0.872
circulation
0.614
carbon
0.850
cost
0.422

Reported quantities

FAR proxy (GFA / lot)
0.73
site utilisation
0.813
gross floor area, m²
505.2
footprint, m²
252.6
carbon proxy, kgCO₂e/m² (A1–A3)
314
cost index / m² (unitless)
2.65
worst habitable room, daylight
0.392
circulation share of GFA
16%
open space, net of parking
63%
courtyard void, m²
0.0
plumbing stacks
11
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
U02BR135.39
U12BR116.69
U22BR122.69
U32BR130.79
All 36 rooms
RoomTypeDwellingStoreyw × h m
STAIR:U0@0circulationU007.61.00 × 7.60
STAIR:U0@1circulationU017.61.00 × 7.60
U0@0#1livingU0028.14.50 × 6.25
U0@0#0entryU006.14.50 × 1.35
U0@0#2kitchenU0018.53.40 × 5.45
U0@0#3bathroomU007.33.40 × 2.15
U0@1#6bedroom secondaryU0123.34.05 × 5.75
U0@1#7bathroomU017.54.05 × 1.85
U0@1#5bedroom primaryU0129.33.85 × 7.60
STAIR:U1@0circulationU106.51.00 × 6.55
STAIR:U1@1circulationU116.51.00 × 6.55
U1@0#2kitchenU1012.83.15 × 4.05
U1@0#3bathroomU104.81.90 × 2.50
U1@0#0entryU103.11.25 × 2.50
U1@0#1livingU1031.14.75 × 6.55
U1@1#6bedroom secondaryU1116.63.60 × 4.60
U1@1#7bathroomU117.03.60 × 1.95
U1@1#5bedroom primaryU1128.24.30 × 6.55
STAIR:U2@0circulationU2010.61.55 × 6.85
STAIR:U2@1circulationU2110.61.55 × 6.85
U2@0#1livingU2025.73.75 × 6.85
U2@0#2kitchenU2014.23.65 × 3.90
U2@0#0entryU204.11.40 × 2.95
U2@0#3bathroomU206.62.25 × 2.95
U2@1#7bathroomU218.93.35 × 2.65
U2@1#6bedroom secondaryU2114.13.35 × 4.20
U2@1#5bedroom primaryU2127.74.05 × 6.85
STAIR:U3@0circulationU308.41.15 × 7.30
STAIR:U3@1circulationU318.41.15 × 7.30
U3@0#1livingU3032.94.50 × 7.30
U3@0#0entryU303.71.25 × 2.95
U3@0#3bathroomU306.02.05 × 2.95
U3@0#2kitchenU3014.43.30 × 4.35
U3@1#6bedroom secondaryU3119.64.30 × 4.55
U3@1#7bathroomU3111.84.30 × 2.75
U3@1#5bedroom primaryU3125.63.50 × 7.30

Side by side