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.

B0002 · knee point · seed 0

B0002-heuristic-0~r7

HeuristicA · meets all 17 benchmark constraints. Brief B0002

Plan drawing of a duplex on a 15.3 by 19.8 metre lot, 2 storeys, 2 dwellings, 12 rooms. Dwelling U0 (1BR) has 5 rooms totalling 104 square metres. Dwelling U1 (1BR) has 5 rooms totalling 104 square metres. Building footprint 115 square metres; open space 191 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.51, privacy 0.73, circulation 0.71, carbon 0.81, cost 0.67.
B0002 · heuristic · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 15.3 by 19.8 metre lot, 2 storeys, 2 dwellings, 12 rooms. Dwelling U0 (1BR) has 5 rooms totalling 104 square metres. Dwelling U1 (1BR) has 5 rooms totalling 104 square metres. Building footprint 115 square metres; open space 191 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.51, privacy 0.73, circulation 0.71, carbon 0.81, cost 0.67.

Objective vector

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

density
1.000
daylight
0.512
privacy
0.733
circulation
0.714
carbon
0.806
cost
0.675

Reported quantities

FAR proxy (GFA / lot)
0.76
site utilisation
1.000
gross floor area, m²
230.6
footprint, m²
115.3
carbon proxy, kgCO₂e/m² (A1–A3)
330
cost index / m² (unitless)
2.25
worst habitable room, daylight
0.457
circulation share of GFA
13%
open space, net of parking
62%
courtyard void, m²
0.0
plumbing stacks
1
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 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
U01BR104.25
U11BR104.25
All 12 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared011.21.20 × 9.30
CORE@1shared circulationshared111.21.20 × 9.30
U0@0#2kitchenU0014.42.25 × 6.40
U0@0#3bathroomU003.82.25 × 1.70
U0@0#0entryU002.72.25 × 1.20
U0@0#1livingU0033.53.60 × 9.30
U0@0#4bedroom primaryU0049.85.35 × 9.30
U1@1#2kitchenU1114.02.95 × 4.75
U1@1#3bathroomU119.42.95 × 3.20
U1@1#0entryU114.02.95 × 1.35
U1@1#1livingU1135.33.80 × 9.30
U1@1#4bedroom primaryU1141.44.45 × 9.30

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