At this California home, be the king of your own castle — literally.

A bona fide castle is on the market in the town of Oak Glen for the relatively inexpensive price of $999,000.

(It’s been on and off the market since at least 2010, asking $4.9 million at its peak.)

The four-bedroom, 3½-bathroom house comes complete with turrets, a fountain and stained-glass windows.

Family shields abound, and there’s a suit of armor.

Plus the wooden front door is so heavily padlocked and adorned with metal accouterments that it looks like it could lead to a dungeon.

There’s also a drawbridge and a moat, though a creek that runs year-round serves as a second water barrier. Curbed first reported the listing.

How did such a property crop up in Oak Glen, a tiny pocket (population 638) in San Bernardino County that’s about an hour and a half from Los Angeles?

The owner visited Europe, was inspired by a castle there and built a replica out of cut gray stone, according to listing broker JR Allgower. The owner started construction in 1976 and only finished a few years ago.

“His goal was always to live in a castle, to be the king of a castle,” Allgower tells The Post. “It’s taken him a while to get it all together.”

Over the 7-acre estate, there’s also an apple orchard, grape vines and cherry blossom trees. It also abuts the San Bernardino National Forest.

“There are deer, bobcats, bears — so it’s completely enclosed now,” Allgower adds. “There are wrought-iron gates around it.” Whew!

The interior has modern conveniences (except for central heat and air conditioning) but the decor is medievally inspired — hence the two fireplaces and a tapestry hanging in the great room.

There are also four two-car garages that the owner has dubbed “stables.”

The average sale price in the castle’s ZIP code is $316,900, according to Zillow, so this place is pretty steep by comparison.

“It’s a pain in the butt,” jokes a representative who answered the phone at Allgower’s office. “Everyone wants to go see it, but nobody can afford to buy it.”