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.

B0030 · best infeasible · seed 2

B0030-random-2-220

Random searchB · violates 3 of 17 benchmark constraints (4 violations). Brief B0030

Plan drawing of a adu pair on a 12.9 by 18.0 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (2BR) has 6 rooms totalling 64 square metres. Dwelling U1 (1BR) has 5 rooms totalling 64 square metres. Building footprint 74 square metres; open space 158 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion. Objective scores, higher is better: density 0.88, daylight 0.58, privacy 0.86, circulation 0.57, carbon 0.71, cost 0.17.
B0030 · random · seed 2scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a adu pair on a 12.9 by 18.0 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (2BR) has 6 rooms totalling 64 square metres. Dwelling U1 (1BR) has 5 rooms totalling 64 square metres. Building footprint 74 square metres; open space 158 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion. Objective scores, higher is better: density 0.88, daylight 0.58, privacy 0.86, circulation 0.57, carbon 0.71, cost 0.17.

Objective vector

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

density
0.879
daylight
0.579
privacy
0.860
circulation
0.570
carbon
0.707
cost
0.166

Reported quantities

FAR proxy (GFA / lot)
0.64
site utilisation
0.921
gross floor area, m²
148.9
footprint, m²
74.5
carbon proxy, kgCO₂e/m² (A1–A3)
365
cost index / m² (unitless)
3.04
worst habitable room, daylight
0.339
circulation share of GFA
20%
open space, net of parking
61%
courtyard void, m²
0.0
plumbing stacks
3
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 failedentry clear dim 1.15 < 1.20 mbathroom clear dim 1.40 < 1.50 m
  • C06max room aspect failedbathroom aspect 3.21 > 3.00
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency failedrequired adjacency kitchen-living absent
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision passed
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U02BR64.06
U11BR64.05
All 13 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.51.30 × 8.05
CORE@1shared circulationshared110.51.30 × 8.05
U0@0#2kitchenU008.22.55 × 3.20
U0@0#5bedroom secondaryU008.02.55 × 3.15
U0@0#3bathroomU004.32.55 × 1.70
U0@0#4bedroom primaryU0013.84.25 × 3.25
U0@0#0entryU003.71.15 × 3.25
U0@0#1livingU0025.95.40 × 4.80
U1@1#1livingU1129.94.50 × 6.65
U1@1#3bathroomU116.34.50 × 1.40
U1@1#2kitchenU118.53.45 × 2.45
U1@1#0entryU115.03.45 × 1.45
U1@1#4bedroom primaryU1114.33.45 × 4.15

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