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.

B0018 · knee point · seed 1

B0018-sketch-1-1180

Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0018

Plan drawing of a adu pair on a 17.5 by 21.8 metre lot, 2 storeys, 2 dwellings, 15 rooms. Dwelling U0 (3BR) has 8 rooms totalling 131 square metres. Dwelling U1 (1BR) has 5 rooms totalling 131 square metres. Building footprint 144 square metres; open space 242 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.96, daylight 0.60, privacy 0.97, circulation 0.57, carbon 0.83, cost 0.76.
B0018 · sketch · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a adu pair on a 17.5 by 21.8 metre lot, 2 storeys, 2 dwellings, 15 rooms. Dwelling U0 (3BR) has 8 rooms totalling 131 square metres. Dwelling U1 (1BR) has 5 rooms totalling 131 square metres. Building footprint 144 square metres; open space 242 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.96, daylight 0.60, privacy 0.97, circulation 0.57, carbon 0.83, cost 0.76.

Objective vector

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

density
0.960
daylight
0.604
privacy
0.967
circulation
0.573
carbon
0.832
cost
0.765

Reported quantities

FAR proxy (GFA / lot)
0.76
site utilisation
0.974
gross floor area, m²
288.6
footprint, m²
144.3
carbon proxy, kgCO₂e/m² (A1–A3)
321
cost index / m² (unitless)
2.11
worst habitable room, daylight
0.226
circulation share of GFA
20%
open space, net of parking
58%
courtyard void, m²
0.0
plumbing stacks
1
footprint corners
4
preferred adjacencies met
75%

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
U03BR131.08
U11BR131.05
All 15 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared013.31.20 × 11.10
CORE@1shared circulationshared113.31.20 × 11.10
U0@0#2diningU0019.14.55 × 4.20
U0@0#1livingU0015.33.65 × 4.20
U0@0#3kitchenU0016.95.55 × 3.05
U0@0#4bathroomU008.12.65 × 3.05
U0@0#5bedroom primaryU0021.05.45 × 3.85
U0@0#7bedroom secondaryU0010.62.75 × 3.85
U0@0#0entryU0016.03.60 × 4.45
U0@0#6bedroom secondaryU0023.93.60 × 6.65
U1@1#4bedroom primaryU1137.86.05 × 6.25
U1@1#2kitchenU1117.52.80 × 6.25
U1@1#3bathroomU1142.98.85 × 4.85
U1@1#0entryU1114.22.95 × 4.80
U1@1#1livingU1118.62.95 × 6.30

Side by side