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.

B0059 · privacy-optimal · seed 0

B0059-nsga2-0-1023

NSGA-IID · meets all 17 benchmark constraints. Brief B0059

Plan drawing of a triplex on a 16.8 by 22.7 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 56 square metres. Dwelling U1 (1BR) has 5 rooms totalling 51 square metres. Dwelling U2 (2BR) has 6 rooms totalling 107 square metres. Building footprint 118 square metres; open space 266 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.49, daylight 0.71, privacy 0.90, circulation 0.57, carbon 0.77, cost 0.28.
B0059 · nsga2 · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 16.8 by 22.7 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 56 square metres. Dwelling U1 (1BR) has 5 rooms totalling 51 square metres. Dwelling U2 (2BR) has 6 rooms totalling 107 square metres. Building footprint 118 square metres; open space 266 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.49, daylight 0.71, privacy 0.90, circulation 0.57, carbon 0.77, cost 0.28.

Objective vector

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

density
0.487
daylight
0.714
privacy
0.901
circulation
0.567
carbon
0.772
cost
0.282

Reported quantities

FAR proxy (GFA / lot)
0.62
site utilisation
0.667
gross floor area, m²
235.8
footprint, m²
117.9
carbon proxy, kgCO₂e/m² (A1–A3)
342
cost index / m² (unitless)
2.86
worst habitable room, daylight
0.197
circulation share of GFA
21%
open space, net of parking
69%
courtyard void, m²
0.0
plumbing stacks
5
footprint corners
4
preferred adjacencies met
67%

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
U01BR55.85
U11BR50.95
U22BR106.76
All 18 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared011.31.25 × 9.00
CORE@1shared circulationshared111.31.25 × 9.00
U0@0#0entryU004.63.40 × 1.35
U0@0#1livingU0026.03.40 × 7.65
U0@0#2kitchenU006.42.80 × 2.30
U0@0#3bathroomU004.92.80 × 1.75
U0@0#4bedroom primaryU0013.92.80 × 4.95
U1@0#4bedroom primaryU1015.32.80 × 5.45
U1@0#0entryU103.62.80 × 1.30
U1@0#2kitchenU106.32.80 × 2.25
U1@0#3bathroomU109.72.85 × 3.40
U1@0#1livingU1016.02.85 × 5.60
U2@1#1livingU2132.85.80 × 5.65
U2@1#0entryU2119.45.80 × 3.35
U2@1#2kitchenU217.13.15 × 2.25
U2@1#3bathroomU216.52.90 × 2.25
U2@1#5bedroom secondaryU2115.76.05 × 2.60
U2@1#4bedroom primaryU2125.16.05 × 4.15

Side by side