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.

B0033 · best infeasible · seed 0

B0033-heuristic-0

HeuristicA · violates 1 of 17 benchmark constraints (2 violations). Brief B0033

Plan drawing of a fourplex on a 15.0 by 23.9 metre lot, 2 storeys, 4 dwellings, 22 rooms. Dwelling U0 (studio) has 4 rooms totalling 59 square metres. Dwelling U1 (1BR) has 5 rooms totalling 47 square metres. Dwelling U2 (1BR) has 5 rooms totalling 45 square metres. Dwelling U3 (2BR) has 6 rooms totalling 61 square metres. Building footprint 120 square metres; open space 239 square metres. This design is infeasible; failing categories: insufficient area. Objective scores, higher is better: density 1.00, daylight 0.50, privacy 0.74, circulation 0.63, carbon 0.75, cost 0.41.
B0033 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a fourplex on a 15.0 by 23.9 metre lot, 2 storeys, 4 dwellings, 22 rooms. Dwelling U0 (studio) has 4 rooms totalling 59 square metres. Dwelling U1 (1BR) has 5 rooms totalling 47 square metres. Dwelling U2 (1BR) has 5 rooms totalling 45 square metres. Dwelling U3 (2BR) has 6 rooms totalling 61 square metres. Building footprint 120 square metres; open space 239 square metres. This design is infeasible; failing categories: insufficient area. Objective scores, higher is better: density 1.00, daylight 0.50, privacy 0.74, circulation 0.63, carbon 0.75, cost 0.41.

Objective vector

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

density
1.000
daylight
0.503
privacy
0.740
circulation
0.635
carbon
0.751
cost
0.410

Reported quantities

FAR proxy (GFA / lot)
0.67
site utilisation
1.000
gross floor area, m²
239.8
footprint, m²
119.9
carbon proxy, kgCO₂e/m² (A1–A3)
350
cost index / m² (unitless)
2.66
worst habitable room, daylight
0.121
circulation share of GFA
17%
open space, net of parking
67%
courtyard void, m²
0.0
plumbing stacks
2
footprint corners
4
preferred adjacencies met
0%

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 failed1BR 44.6 < 46.0 m^22BR 61.0 < 63.0 m^2
  • 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
U0studio58.64
U11BR47.05
U21BR44.65
U32BR61.06
All 22 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared014.311.00 × 1.30
CORE@1shared circulationshared114.311.00 × 1.30
U1@0#4bedroom primaryU1018.44.90 × 3.75
U1@0#1livingU1014.94.90 × 3.05
U1@0#2kitchenU105.72.05 × 2.80
U1@0#3bathroomU104.61.65 × 2.80
U1@0#0entryU103.41.20 × 2.80
U0@0#1livingU0045.46.10 × 7.45
U0@0#0entryU002.61.20 × 2.15
U0@0#3bathroomU004.52.10 × 2.15
U0@0#2kitchenU006.02.80 × 2.15
U3@1#4bedroom primaryU3111.03.15 × 3.50
U3@1#5bedroom secondaryU3111.23.20 × 3.50
U3@1#1livingU3127.06.35 × 4.25
U3@1#2kitchenU315.83.15 × 1.85
U3@1#3bathroomU313.61.95 × 1.85
U3@1#0entryU312.31.25 × 1.85
U2@1#4bedroom primaryU2117.74.65 × 3.80
U2@1#1livingU2112.64.65 × 2.70
U2@1#0entryU213.71.20 × 3.10
U2@1#3bathroomU215.11.65 × 3.10
U2@1#2kitchenU215.61.80 × 3.10

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