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.

B0005 · daylight-optimal · seed 0

B0005-nsga2-0-1272

NSGA-IID · meets all 17 benchmark constraints. Brief B0005

Plan drawing of a triplex on a 15.8 by 20.8 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 50 square metres. Dwelling U1 (1BR) has 5 rooms totalling 49 square metres. Dwelling U2 (2BR) has 6 rooms totalling 99 square metres. Building footprint 110 square metres; open space 222 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.60, daylight 0.70, privacy 0.78, circulation 0.65, carbon 0.76, cost 0.29.
B0005 · nsga2 · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 15.8 by 20.8 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 50 square metres. Dwelling U1 (1BR) has 5 rooms totalling 49 square metres. Dwelling U2 (2BR) has 6 rooms totalling 99 square metres. Building footprint 110 square metres; open space 222 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.60, daylight 0.70, privacy 0.78, circulation 0.65, carbon 0.76, cost 0.29.

Objective vector

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

density
0.601
daylight
0.702
privacy
0.781
circulation
0.651
carbon
0.756
cost
0.293

Reported quantities

FAR proxy (GFA / lot)
0.67
site utilisation
0.740
gross floor area, m²
220.4
footprint, m²
110.2
carbon proxy, kgCO₂e/m² (A1–A3)
348
cost index / m² (unitless)
2.85
worst habitable room, daylight
0.461
circulation share of GFA
17%
open space, net of parking
66%
courtyard void, m²
0.0
plumbing stacks
4
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
U01BR49.85
U11BR49.35
U22BR99.06
All 18 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared011.21.20 × 9.30
CORE@1shared circulationshared111.21.20 × 9.30
U0@0#1livingU0017.23.05 × 5.65
U0@0#4bedroom primaryU0011.13.05 × 3.65
U0@0#3bathroomU003.72.30 × 1.60
U0@0#0entryU005.62.30 × 2.45
U0@0#2kitchenU0012.12.30 × 5.25
U1@0#2kitchenU1010.02.05 × 4.90
U1@0#0entryU103.22.05 × 1.55
U1@0#3bathroomU105.82.05 × 2.85
U1@0#4bedroom primaryU1012.03.25 × 3.70
U1@0#1livingU1018.23.25 × 5.60
U2@1#1livingU2128.05.60 × 5.00
U2@1#0entryU215.61.30 × 4.30
U2@1#4bedroom primaryU2118.54.30 × 4.30
U2@1#2kitchenU2111.15.05 × 2.20
U2@1#3bathroomU2113.65.05 × 2.70
U2@1#5bedroom secondaryU2122.25.05 × 4.40

Side by side