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.

B0042 · best infeasible · seed 1

B0042-random-1-880

Random searchB · violates 4 of 17 benchmark constraints (5 violations). Brief B0042

Plan drawing of a adu pair on a 14.8 by 21.3 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 79 square metres. Dwelling U1 (studio) has 4 rooms totalling 79 square metres. Building footprint 96 square metres; open space 223 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion, insufficient area. Objective scores, higher is better: density 0.88, daylight 0.65, privacy 0.82, circulation 0.59, carbon 0.76, cost 0.47.
B0042 · random · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a adu pair on a 14.8 by 21.3 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 79 square metres. Dwelling U1 (studio) has 4 rooms totalling 79 square metres. Building footprint 96 square metres; open space 223 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion, insufficient area. Objective scores, higher is better: density 0.88, daylight 0.65, privacy 0.82, circulation 0.59, carbon 0.76, cost 0.47.

Objective vector

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

density
0.879
daylight
0.650
privacy
0.816
circulation
0.588
carbon
0.762
cost
0.472

Reported quantities

FAR proxy (GFA / lot)
0.61
site utilisation
0.922
gross floor area, m²
191.1
footprint, m²
95.5
carbon proxy, kgCO₂e/m² (A1–A3)
346
cost index / m² (unitless)
2.57
worst habitable room, daylight
0.406
circulation share of GFA
24%
open space, net of parking
60%
courtyard void, m²
0.0
plumbing stacks
2
footprint corners
4
preferred adjacencies met
33%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area faileddining 6.9 < 7.0 m^2bedroom_secondary 7.0 < 7.5 m^2
  • C05min room dimension faileddining clear dim 2.15 < 2.20 m
  • C06max room aspect passed
  • C07min unit area failed3BR 79.2 < 84.0 m^2
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency failedrequired adjacency entry-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
U03BR79.28
U1studio79.24
All 14 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared016.41.80 × 9.10
CORE@1shared circulationshared116.41.80 × 9.10
U0@0#1livingU0020.24.35 × 4.65
U0@0#4bathroomU005.32.50 × 2.10
U0@0#0entryU005.92.50 × 2.35
U0@0#3kitchenU008.21.85 × 4.45
U0@0#6bedroom secondaryU0010.74.35 × 2.45
U0@0#5bedroom primaryU0015.04.35 × 3.45
U0@0#2diningU006.92.15 × 3.20
U0@0#7bedroom secondaryU007.02.20 × 3.20
U1@1#3bathroomU118.03.40 × 2.35
U1@1#0entryU116.33.40 × 1.85
U1@1#2kitchenU1116.73.40 × 4.90
U1@1#1livingU1148.25.30 × 9.10

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