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.

B0065 · daylight-optimal · seed 0

B0065-nsga2-0-1230

NSGA-IID · meets all 17 benchmark constraints. Brief B0065

Plan drawing of a triplex on a 16.4 by 19.0 metre lot, 2 storeys, 3 dwellings, 17 rooms. Dwelling U0 (studio) has 4 rooms totalling 36 square metres. Dwelling U1 (1BR) has 5 rooms totalling 48 square metres. Dwelling U2 (2BR) has 6 rooms totalling 85 square metres. Building footprint 96 square metres; open space 214 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.66, daylight 0.76, privacy 0.79, circulation 0.59, carbon 0.73, cost 0.08.
B0065 · nsga2 · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 16.4 by 19.0 metre lot, 2 storeys, 3 dwellings, 17 rooms. Dwelling U0 (studio) has 4 rooms totalling 36 square metres. Dwelling U1 (1BR) has 5 rooms totalling 48 square metres. Dwelling U2 (2BR) has 6 rooms totalling 85 square metres. Building footprint 96 square metres; open space 214 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.66, daylight 0.76, privacy 0.79, circulation 0.59, carbon 0.73, cost 0.08.

Objective vector

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

density
0.659
daylight
0.764
privacy
0.788
circulation
0.591
carbon
0.730
cost
0.081

Reported quantities

FAR proxy (GFA / lot)
0.61
site utilisation
0.778
gross floor area, m²
191.3
footprint, m²
95.6
carbon proxy, kgCO₂e/m² (A1–A3)
357
cost index / m² (unitless)
3.18
worst habitable room, daylight
0.595
circulation share of GFA
19%
open space, net of parking
69%
courtyard void, m²
0.0
plumbing stacks
5
footprint corners
4
preferred adjacencies met
100%

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
U0studio36.34
U11BR48.25
U22BR84.56
All 17 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared011.11.45 × 7.65
CORE@1shared circulationshared111.11.45 × 7.65
U1@0#0entryU102.81.30 × 2.15
U1@0#3bathroomU103.71.70 × 2.15
U1@0#1livingU1016.53.00 × 5.50
U1@0#4bedroom primaryU1013.03.30 × 3.95
U1@0#2kitchenU1012.23.30 × 3.70
U0@0#2kitchenU008.81.90 × 4.65
U0@0#3bathroomU005.71.90 × 3.00
U0@0#1livingU0015.42.85 × 5.40
U0@0#0entryU006.42.85 × 2.25
U2@1#1livingU2128.16.70 × 4.20
U2@1#2kitchenU2113.63.95 × 3.45
U2@1#3bathroomU219.52.75 × 3.45
U2@1#5bedroom secondaryU2113.54.35 × 3.10
U2@1#0entryU215.44.35 × 1.25
U2@1#4bedroom primaryU2114.44.35 × 3.30

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