With two amusement parks full of rides and a number of soundstages between the parks, Halloween Horror Nights Orlando has found a number of locations to host their haunted houses. Ride queues have always been used for haunted houses since the first Dungeon of Terror was built in the unopened JAWS Queue. Soundstages were first used in 1992 and have been used for every year since 1995. Known for their greater detail, the event has grown to include four soundstage houses each year. After 2002, three new buildings were built to hold houses. The first walkthrough attraction used was the Bates Motel, a recreation of the motel from the film Psycho, while other attractions, like Poseidon's Fury and the Triceratops Discovery Trail have been used more recently. A number of other buildings, including a seasonal restaurant and storage buildings, have also been utilized, with each location offering a unique experience for guests.
| Name | Description | Haunted Houses Featured |
| Bates Motel | Located in Universal Studios when the park first opened, the motel was a recreation of the setting of the film Psycho. The building was demolished in the mid-1990s in order to make room for the Woody Woodpecker's Kidzone play area. | |
| The Boneyard | The Boneyard is a large open area in front of the soundstages in Universal Studios. It was used to display props from universal films. The Boneyard area was removed to make way for the Universal Music Plaza. which is currently used for special events such as Rock the Universe and Universal's Mardi Gras. | |
| Carnage Warehouse | Located in Islands of Adventure behind Doctor Doom's Fear Fall, the building was constructed in 2002 for that year's event. Ever since Universal stopped holding Halloween Horror Nights in Islands of Adventure, this building has been used for storage. | |
| Disaster! Queue (previously Earthquake Queue) |
The Disaster Queue was located in Universal Studios. The houses were held in the extended queue of Disaster!: A Major Motion Picture Ride...Starring You! and previously of Earthquake: The Big One, which were covered with a large canopy. There are normally props located in the area, which are removed to give a large open area for houses. This area was removed when Fast and the Furious: Supercharged replaced the Disaster! ride. |
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| JAWS Queue | Located in Universal Studios, the queue of JAWS was empty for the first two years of the event due to problems with the ride. The extended queue was used for houses in later events. The JAWS queue and attraction were permanently closed on January 2nd, 2012 and later demolished. | |
| Jurassic Park Discovery Center | Located in Jurassic Park, the Discovery Center hosts interactive dinosaur exhibits. The building was shut down for three months to create the haunted attractions. Because of the unique shape of the building, both houses had nearly identical layouts constructed around the building's large staircase and elevator. | |
| MIB Tent | This was the third tent made for Halloween Horror Nights and was located behind the Men in Black ride building. It was first used during Halloween Horror Nights 26. | |
| Nazarman's | Located within the New York street set of Universal Studios, the houses built here are constructed inside the facades of the New York City buildings. Shortly after the 2007 event, a Starbucks was constructed in the location so it is unclear if the shop has taken up potential house space. | |
| Parade Warehouse | The Parade Warehouse is a large warehouse located behind the Curious George Goes to Town play area. It was constructed in early 2008 to house Universal's many parade floats. While half of the warehouse is being used for storage, the rest was used to house haunted houses for the event. |
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| Popeye and Bluto's Bilge-Rat Barges Queue | Located in Toon Lagoon, the queue of Popeye and Bluto's Bilge-Rat Barges is long with narrow hallways. When the space was used, poles and ropes were removed to make room for the construction. | |
| Poseidon's Fury | Located in The Lost Continent, Poseidon's Fury is a walk-through stunt and special effects show. The attraction was revamped in 2005 and was used as a haunted house that year. | |
| Second Parade Warehouse | The Second Parade Warehouse is a warehouse located behind the normal Parade Warehouse. It was constructed between 2017 and 2018. In 2018 this location had a haunted house, increasing the number of haunted houses at the event from 9 to 10. | |
| Soundstage 18 | Soundstage 18 hosted Nickelodeon Studios at Universal Orlando. In 2006 it underwent complete reconstruction as it was transformed into the "Sharp Aquos Theatre" for the new "Blue Man Group" show. Due to this change, it is unlikely that it will be used again for the event. | |
| Soundstage 19 | The largest soundstage at Universal. First used for Halloween Horror Nights 26. | |
| Soundstage 20 | One of the larger soundstage facilities at Universal, Soundstage 20 typically holds two haunted houses for the event. The soundstage is also used as a storage facility. | |
| Soundstage 21 | Soundstage 21 used to be the home of The TNA Impact Zone, along with other productions. However, after TNA terminated it's lease with Universal in March 2013, it was left open to be a haunted house location. | |
| Soundstage 22 | Facing the Production Central section of Universal Studios, Soundstage 22 often featured two haunted houses each year until 2002, in which it was unused for the event. From 2004 and onward, the house was used to hold one haunted house until 2020 when it went unused again. |
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| Soundstage 23 | Another large soundstage in the Universal Studios backlot, Soundstage 23 was used in the earlier years of the event. More recently it has been brought back to use for the event and has comfortably featured two houses due to its large size. It stopped being used after 2011. |
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| Soundstage 24 | Another large soundstage used since Halloween Horror Nights 23. This location usually holds two houses. |
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| Soundstage 25 | First used during Halloween Horror Nights 24. It is one of the larger soundstages. | |
| Soundstage | Shrek 4-D had two theaters, and because one was not used that much they scrapped it to add a Halloween Horror Nights haunted house. This area was first used in 2015. | |
| Soundstage 44 (Herc & Xena Building) |
Located in Universal Studios, the building formerly housed a "Hercules and Xena" attraction in the late 1990s and originally held a "Murder, She Wrote" attraction. | |
| Sprung Tent 1 | The first of the two large hurricane-proof, climate-controlled warehouses built in Universal Studios. It sits in a large field behind the World Expo area. Built in 2006 to serve as space for Halloween Horror Nights houses, large lighted cement pathways were installed in the World Expo and Woody Woodpecker's Kidzone areas to access it. |
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| Sprung Tent 2 | The second of the two large hurricane-proof, climate-controlled warehouses built in Universal Studios. It sits in a large field behind the World Expo area. Built in 2006 to serve as space for Halloween Horror Nights houses, large lighted cement pathways were installed in the World Expo and Woody Woodpecker's Kidzone areas to access it. |
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| Thunderfalls Terrace | A seasonal restaurant in Islands of Adventure, the restaurant was cleared out so that it serves as a large open floor space. This has worked to Universal's advantage as they are able to have slightly more freedom with the designs they create when using this structure. | |
| Triceratops Discovery Trail | A walking attraction in Jurassic Park that allowed visitors to come face to face with a triceratops, it consists of a series of trails. The haunted houses placed in this location were mostly outdoors, with a few small indoor areas scattered throughout. The attraction permanently closed several years ago and now sits abandoned. |