With five sprawling bedrooms, a sweeping staircase and plenty of outdoor space this suburban home looks perfect for any family.

But the house - which has just gone on the market in Pennsylvania, US,

for US$750,000 - hides a surprising secret.

Real estate images show the home has all the normal interior features - bedrooms, bathrooms, a kitchen and living space. It boasts a gym, a games room, an indoor and outdoor speaker system and granite countertops.

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But the pictures also show the home has a fully furnished sex dungeon.

Closer inspection shows the room with a sex swing, whips hanging on the wall and chains attached to the bed.

The listing's realtor, Melissa Leonard, told BuzzFeed News: "Total suburban beautiful home. But the twist is it has this sex oasis in the basement."

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According to Leonard the home, in Maple Glen, was owned by a man who moved to Philadelphia with his family when his wife died.

He then set the home up on Airbnb, where it was reportedly listed as "Maison XS - Just Be You" before finally putting it up for sale.

The home appears to have now been taken down from the renting site but was listed at US$750 per night with a US$250 cleaning fee, according to reports.

The real estate listing calls it "one of a kind' with 'secluded' bedrooms and located on a "private lane of just three homes".

It also says the sex dungeon "can be converted back to a typical suburban basement".

The listing reads: "One of a kind suburban home. Private quiet lane of 3 homes leads you to a secluded 4 bedrooms upstairs plus 1 bedroom in basement.

"Hardwood floors throughout both floors. Breakfast room w/ vaulted ceilings walks out to large deck & private wooded yard w/ custom gazebo.

"Full finished walk-out basement w bilco doors, includes a gym or 5th bedroom. It can be converted back to a typical suburban basement. Award winning Upper Dublin school district. House is being sold furnished."

- Daily Mail