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.

B0058 · daylight-optimal · seed 0

B0058-heuristic-0~r36

HeuristicA · meets all 17 benchmark constraints. Brief B0058

Plan drawing of a rowhouse on a 29.5 by 30.6 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 224 square metres. Dwelling U1 (2BR) has 9 rooms totalling 231 square metres. Dwelling U2 (2BR) has 9 rooms totalling 244 square metres. Dwelling U3 (2BR) has 9 rooms totalling 226 square metres. Building footprint 462 square metres; open space 428 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.93, daylight 0.82, privacy 0.85, circulation 0.48, carbon 0.94, cost 0.86.
B0058 · heuristic · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a rowhouse on a 29.5 by 30.6 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 224 square metres. Dwelling U1 (2BR) has 9 rooms totalling 231 square metres. Dwelling U2 (2BR) has 9 rooms totalling 244 square metres. Dwelling U3 (2BR) has 9 rooms totalling 226 square metres. Building footprint 462 square metres; open space 428 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.93, daylight 0.82, privacy 0.85, circulation 0.48, carbon 0.94, cost 0.86.

Objective vector

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

density
0.928
daylight
0.824
privacy
0.854
circulation
0.476
carbon
0.940
cost
0.858

Reported quantities

FAR proxy (GFA / lot)
1.02
site utilisation
0.953
gross floor area, m²
924.6
footprint, m²
462.3
carbon proxy, kgCO₂e/m² (A1–A3)
282
cost index / m² (unitless)
1.97
worst habitable room, daylight
0.219
circulation share of GFA
66%
open space, net of parking
49%
courtyard void, m²
0.0
plumbing stacks
9
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
U02BR223.99
U12BR231.19
U22BR243.99
U32BR225.79
All 36 rooms
RoomTypeDwellingStoreyw × h m
STAIR:U0@0circulationU0074.46.15 × 12.10
STAIR:U0@1circulationU0174.46.15 × 12.10
U0@0#2kitchenU009.53.10 × 3.05
U0@0#3bathroomU004.61.50 × 3.05
U0@0#0entryU004.71.55 × 3.05
U0@0#1livingU0018.86.15 × 3.05
U0@1#5bedroom primaryU0112.03.00 × 4.00
U0@1#6bedroom secondaryU0112.63.15 × 4.00
U0@1#7bathroomU0112.96.15 × 2.10
STAIR:U1@0circulationU1075.26.35 × 11.85
STAIR:U1@1circulationU1175.26.35 × 11.85
U1@0#0entryU105.01.20 × 4.20
U1@0#1livingU1011.82.80 × 4.20
U1@0#2kitchenU109.92.35 × 4.20
U1@0#3bathroomU1013.76.35 × 2.15
U1@1#5bedroom primaryU1114.13.35 × 4.20
U1@1#6bedroom secondaryU1112.63.00 × 4.20
U1@1#7bathroomU1113.76.35 × 2.15
STAIR:U2@0circulationU2077.46.70 × 11.55
STAIR:U2@1circulationU2177.46.70 × 11.55
U2@0#0entryU205.31.20 × 4.40
U2@0#1livingU2012.32.80 × 4.40
U2@0#2kitchenU2011.92.70 × 4.40
U2@0#3bathroomU2015.16.70 × 2.25
U2@1#5bedroom primaryU2112.23.05 × 4.00
U2@1#6bedroom secondaryU2114.63.65 × 4.00
U2@1#7bathroomU2117.86.70 × 2.65
STAIR:U3@0circulationU3066.76.20 × 10.75
STAIR:U3@1circulationU3166.76.20 × 10.75
U3@0#0entryU307.31.65 × 4.40
U3@0#3bathroomU306.61.50 × 4.40
U3@0#2kitchenU3013.43.05 × 4.40
U3@0#1livingU3018.96.20 × 3.05
U3@1#5bedroom primaryU3117.13.20 × 5.35
U3@1#6bedroom secondaryU3116.13.00 × 5.35
U3@1#7bathroomU3113.06.20 × 2.10

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