The last sequel in the ''House'' film series, released in 1992 straight-to-video.

The film opens with Roger Cobb (yes, the protagonist of [[Film/{{House}}the first film]]) and his family checking out the house his father left him with. Roger's step-brother Burke tries persuade him to let him have it for making some profit, but Roger decides to keep the house as it is due to an old promise made by his ancestor to the local Native Americans. But on the way back home, the Cobb family's car crashes and Roger is engulfed in flames. Some time later his wife Kelly and daughter Laurel move to the old house, deciding to start a new life in there. But Burke is hellbent on getting the property, and seeks to drive them out. The supernatural forces rampaging in the house doesn't help matters either.

!!''House IV'' has the examples of:

* AngryGuardDog: Laurel's dog-lamp turns into a real dog to chase away Burke's goons.
* AnArmAndALeg: The explosion in the car takes all of Roger's limbs.
* AshesToCrashes: Kelly has a vision of her husband's toppled ashes, and a hand rising from it to grab hers.
* BatterUp: Burke's goons visit the house masked and armed with baseball bats to scare Kelly and Laurel out of it.
* BigBad: Burke, who is also the sole living main villain in the ''House'' series.
* EngineeredPublicConfession: Burke is caught when he confesses his misdeeds to FBI, whom Roger made appear as his boss Mr. Grosso.
* FlashbackNightmare: Kelly has nightmares about the car crash that killed Roger.
* HappierHomeMovie: A projector turns on randomly, showing Kelly a home movie from the past.
* {{Flatline}}: Shown when Roger's life support is cut.
%%* MagicalNativeAmerican: Ezra.
* MisterBig: Mr. Grosso, the CorruptCorporateExecutive who seeks to claim the property through Burke.
* TheMole: [[spoiler: It turns out the maid was an undercover FBI agent sent to keep an eye on Kelly and Laurel while investigating her brother-in-law.]]
* {{Phlegmings}}: Due to all the toxic waste around him, Mr. Grosso has developed a serious phlegming problem and needs a specific "phleg-o-matic" to pump it out of his throat.
* ShowerScene: Kelly takes a shower and unbeknowest to her, she is actually [[RainOfBlood showering in blood]].
* SuperWindowJump: Burke's goons escape the lamp-dog by jumping through a window.
* SuspiciouslySpecificDenial: Grosso's barrels of "Non-Toxic Waste".
* ToxicInc: Mr. Grosso's company produces a lot of toxic waste. The reason that Burke and Grosso's flunkies try to claim the main setting is to dump it there.
* WhatHappenedToTheMouse: Roger's son from the first film, as in the one who was driving force in its plot, is nowhere to be seen.