The phrase "a flat owned by" is correct and usable in written English.
It can be used to describe ownership of a flat or apartment, typically in contexts discussing real estate or personal property.
Example: "She lives in a flat owned by her parents, which they purchased several years ago."
Alternatives: "an apartment belonging to" or "a unit possessed by".
Now she lives in a flat owned by the charity.
That national leadership, in the shape of Chris Kitchen, recently saw off former NUM president Arthur Scargill in the courts over a bitter row involving his occupancy of a flat owned by the union in the Barbican.
At first, they lived in a flat owned by the pop singer Annie Lennox on Rue Bonaparte before moving to a village outside the capital, but the first signs of Mrs Steele's illness surfaced and they returned to the UK in 2002.
It brought her a young Dutchman and she moved in with him to a room in a flat owned by an elderly Nazi supporter, a woman willing to overlook her Jewishness in return for money and help in procuring food, by now an all‑consuming matter of barter, queues, coupons, scrimping and pilfering.
She took naturally to skeleton, relocating to Bath and living in a flat owned by Williams.
They have formed a group called the Little People's Association of the Philippines, which meets most Saturday mornings in a ramshackle workshop at the back of a flat owned by the president, Perry Berry.
The unexpected discovery of a hoard of paintings in a Munich flat owned by Cornelius Gurlitt, son of the Nazi-era art dealer Hildebrand Gurlitt, stirred contrasting emotions.
It was only two hours later that the boy's father noticed the keys to a spare flat owned by the family were missing.
We lived in an unheated flat owned by Jesus College.
Give it two years and the site on Charterhouse Street will be either a Tesco Metro or a beyond-bland flat owned by the parents of a 22 year old prick called Toby.
Yet at almost the precise time he arrived unannounced at his 'safe house' - a Birmingham groundfloor flat owned by a Somalian acquaintance - his face would be known to millions.
