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 · daylight-optimal · seed 2

B0059-nsga2-2-704

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 58 square metres. Dwelling U1 (1BR) has 5 rooms totalling 60 square metres. Dwelling U2 (2BR) has 6 rooms totalling 118 square metres. Building footprint 131 square metres; open space 251 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.60, daylight 0.82, privacy 0.80, circulation 0.63, carbon 0.79, cost 0.43.
B0059 · nsga2 · seed 2scale 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 58 square metres. Dwelling U1 (1BR) has 5 rooms totalling 60 square metres. Dwelling U2 (2BR) has 6 rooms totalling 118 square metres. Building footprint 131 square metres; open space 251 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.60, daylight 0.82, privacy 0.80, circulation 0.63, carbon 0.79, cost 0.43.

Objective vector

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

density
0.601
daylight
0.821
privacy
0.799
circulation
0.632
carbon
0.791
cost
0.434

Reported quantities

FAR proxy (GFA / lot)
0.69
site utilisation
0.741
gross floor area, m²
262.1
footprint, m²
131.0
carbon proxy, kgCO₂e/m² (A1–A3)
335
cost index / m² (unitless)
2.63
worst habitable room, daylight
0.555
circulation share of GFA
18%
open space, net of parking
66%
courtyard void, m²
0.0
plumbing stacks
4
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
U01BR58.25
U11BR59.85
U22BR118.06
All 18 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared013.01.25 × 10.40
CORE@1shared circulationshared113.01.25 × 10.40
U0@0#4bedroom primaryU0012.13.15 × 3.85
U0@0#1livingU0020.63.15 × 6.55
U0@0#2kitchenU0014.02.45 × 5.70
U0@0#0entryU005.12.45 × 2.10
U0@0#3bathroomU006.42.45 × 2.60
U1@0#2kitchenU1011.52.65 × 4.35
U1@0#0entryU107.02.65 × 2.65
U1@0#3bathroomU109.02.65 × 3.40
U1@0#1livingU1017.73.10 × 5.70
U1@0#4bedroom primaryU1014.63.10 × 4.70
U2@1#1livingU2134.16.55 × 5.20
U2@1#0entryU218.81.70 × 5.20
U2@1#4bedroom primaryU2125.24.85 × 5.20
U2@1#2kitchenU2121.64.80 × 4.50
U2@1#3bathroomU217.74.80 × 1.60
U2@1#5bedroom secondaryU2120.64.80 × 4.30

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