Here's my ideas for a huge nocturnal house!! I'd be looking at potentially 2-2.5 acres in size.
New Guinea short-beaked echidna (Tachyglossus aculeatus lawesii)
Platypus (Ornithorhynchus anatinus)
Eastern quoll (Dasyurus viverrinus)
Kowari (Dasyuroides byrnei)
Tasmanian devil (Sarcophilus harrisii)
Greater bilby (Macrotis lagotis)
Common spotted cuscus (Spilocuscus maculatus)
Common striped possum (Dactylopsila trivirgata)
Common wombat (Vombatus ursinus hirsutus)
Queensland koala (Phascolarctos cinereus adustus)
White-striped dorcopsis (Dorcopsis hageni)
Lowland streaked tenrec (Hemicenteles semispinosus)
Black-and-rufous elephant shrew (Rhynchocyon petersi)
Common vampire bat (Desmodus rotundus)
Egyptian fruit bat (Rousettus aegyptiacus)
Aye-aye (Daubentonia madagascariensis)
Goodman's mouse lemur (Microcebus lehilahytsara)
Fat-tailed dwarf lemur (Cheirogaleus medius)
Pygmy slow loris (Nycticebus pygmaeus)
Moholi bushbaby (Galago moholi)
Sulawesi tarsier (Tarsius tarsier)
Spix's night monkey (Aotus vociferans)
Giant armadillo (Priodontes maximus)
Chinese pangolin (Manis pentadactyla)
Javan pangolin (Manis javanica)
Red-and-white giant flying squirrel (Petaurista alborufus castaneus)
Brazilian porcupine (Coendou prehensilis)
Rock cavy (Kerodon rupestris)
Naked mole rat (Heterocephalus glaber)
Turkish spiny mouse (Acomys cilicicus)
Northern Luzon giant cloud rat (Phloeomys pallidus)
Panay bushy-tailed cloud rat (Crateromys heaneyi)
Southern Luzon giant cloud rat (Phloeomys cumingi)
Indochinese binturong (Arctictis binturong albifrons)
Owston's palm civet (Chrotogale owstoni)
Fossa (Cryptoprocta ferox)
Eastern aardwolf (Proteles cristata septentrionalis)
Fishing cat (Prionailurus viverrinus)
Sri Lankan rusty-spotted cat (Prionailurus rubiginosus phillipsi)
Indochinese clouded leopard (Neofelis nebulosa nebulosa)
Javan leopard (Panthera pardus melas)
Fennec fox (Vulpes zerda)
Ringtail (Bassariscus astutus)
Aardvark (Orycteropus afer)
Philippine mouse deer (Tragulus nigricans)
Northern brown kiwi (Apteryx mantelli)
Bush thick-knee (Burhinus grallarius)
Eurasian woodcock (Scolopax rusticola)
Kakapo (Strigops habroptilus)
Philippine scops owl (Otus megalotis)
Pel's fishing owl (Scotopelia peli)
Tawny frogmouth (Podargus strigoides)
Alligator snapping turtle* (Macrochelys temminckii)
Madagascar dwarf chameleon (Brookesia minima)
New Caledonian giant day gecko (Rhacodactylus leachianus)
Prehensile-tailed skink (Corucia zebrata)
Arafura filesnake (Acrochordus arafurae)
Reticulated python (Malayopython reticulatus)
Central American bushmaster (Lachesis stenophrys)
Siamese crocodile (Crocodylus siamensis)
American alligator* (Alligator mississipiensis)
Cuvier's dwarf caiman (Paleosuchus palpebrosus)
Gharial (Gavialis gangeticus)
Gaboon caecilian (Geotrypetes seraphini)
Chinese giant salamander (Andrias davidianus)
Olm (Proteus anguinus)
Axolotl (Ambystoma mexicanum)
Lemur leaf frog (Agalychnis lemur)
Mountain chicken (Leptodactylus fallax)
Alligator gar* (Atractosteus spatula)
Mexican blind cave fish (Astyanax jordani)
Goonch catfish (Bagarius yarrelli)
Flashlight fish (Anomalops katoptron)
Fire eel (Mastacembelus erythrotaenia)
Red lionfish (Pterois volitans)
Atlantic sea nettle (Chrysaora quinquecirrha)
Montserrat tarantula (Cyrtopholis femoralis)
Coconut crab (Birgus latro)
Madagascar hissing cockroach (Gromphadorhina portentosa)
Mimic octopus (Thaumoctopus mimicus)
The species marked with a * share an exhibit.
So decided the house is to be 3 acres in size. Here are the sections/which species are on and which are offshow:
EURASIA
Chinese pangolin - Off
Red-and-white giant flying squirrel - Both
Turkish spiny mouse - On
Sri Lankan rusty-spotted cat - Both
Eurasian woodcock - On
Gharial - On
Chinese giant salamander - On
Olm - Off
Goonch catfish - On
SOUTHEAST ASIA
Pygmy slow loris - On
Sulawesi tarsier - Off
Javan pangolin - Both
Northern Luzon giant cloud rat - On
Panay bushy-tailed cloud rat - On
Southern Luzon giant cloud rat - Both
Indochinese binturong - On
Owston's palm civet - Both
Fishing cat - On
Indochinese clouded leopard - Both
Javan leopard - Both
Philippine mouse deer - Both
Philippine scops owl - On
Reticulated python - On
Siamese crocodile - On
Fire eel - On
AUSTRALASIA
New Guinea short-beaked echidna - On
Platypus - On
Eastern quoll - Both
Kowari - Both
Tasmanian devil - On
Greater bilby - On
Common spotted cuscus - On
Common striped possum - On
Common wombat - On
Queensland koala - On
White-striped dorcopsis - Both
Northern brown kiwi - Both
Bush thick-knee - On
Kakapo - Off
Tawny frogmouth - On
New Caledonian giant day gecko - On
Prehensile-tailed skink - On
Arafura filesnake - Off
Coconut crab - On
MADAGASCAR
Lowland streaked tenrec - Both
Aye-aye - On
Goodman's mouse lemur - Both
Fat-tailed dwarf lemur - Off
Fossa - On
Madagascar dwarf chameleon - Both
Madagascar hissing cockroach - On
AFRICA
Black-and-rufous elephant shrew - On
Egyptian fruit bat - On
Moholi bushbaby - On
Naked mole rat - On
Eastern aardwolf - Both
Fennec fox - On
Aardvark - On
Pel's fishing owl - On
Gaboon caecilian - Off
AMERICAS
Common vampire bat - On
Spix's night monkey - Both
Giant armadillo - On
Brazilian porcupine - On
Rock cavy - Off
Ringtail - Both
Alligator snapping turtle/American alligator/Alligator gar - On
Central American bushmaster - Both
Cuvier's dwarf caiman - On
Axolotl - On
Lemur leaf frog - Both
Mountain chicken - Both
Mexican blind cave fish - On
Montserrat tarantula - Both
OCEANS
Flashlight fish - On
Red lionfish - On
Atlantic sea nettle - Both
Mimic octopus - On
So 49 onshow, 9 offshow and 23 with individuals both onshow and offshow