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.

B0042 · privacy-optimal · seed 2

B0042-cpsat-2-4

CP-SATE · meets all 17 benchmark constraints. Brief B0042

Plan drawing of a adu pair on a 14.8 by 21.3 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 88 square metres. Dwelling U1 (studio) has 4 rooms totalling 47 square metres. Building footprint 100 square metres; open space 223 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.64, daylight 0.71, privacy 0.94, circulation 0.51, carbon 0.67, cost 0.05.
B0042 · cpsat · seed 2scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a adu pair on a 14.8 by 21.3 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 88 square metres. Dwelling U1 (studio) has 4 rooms totalling 47 square metres. Building footprint 100 square metres; open space 223 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.64, daylight 0.71, privacy 0.94, circulation 0.51, carbon 0.67, cost 0.05.

Objective vector

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

density
0.636
daylight
0.709
privacy
0.940
circulation
0.509
carbon
0.667
cost
0.054

Reported quantities

FAR proxy (GFA / lot)
0.50
site utilisation
0.763
gross floor area, m²
158.3
footprint, m²
99.8
carbon proxy, kgCO₂e/m² (A1–A3)
380
cost index / m² (unitless)
3.22
worst habitable room, daylight
0.188
circulation share of GFA
21%
open space, net of parking
58%
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
U03BR88.58
U1studio47.34
All 14 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU006.04.00 × 1.50
U0@0#1livingU0016.04.00 × 4.00
U0@0#2diningU0012.04.00 × 3.00
U0@0#3kitchenU006.32.50 × 2.50
U0@0#4bathroomU005.02.50 × 2.00
U0@0#5bedroom primaryU0022.04.00 × 5.50
U0@0#6bedroom secondaryU008.83.50 × 2.50
U0@0#7bedroom secondaryU0012.52.50 × 5.00
U1@1#0entryU115.31.50 × 3.50
U1@1#1livingU1121.03.00 × 7.00
U1@1#2kitchenU1115.84.50 × 3.50
U1@1#3bathroomU115.31.50 × 3.50
CORE@0shared circulationshared011.34.50 × 2.50
CORE@1shared circulationshared111.34.50 × 2.50

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