The Sherlock star has applied for planning permission to convert the two apartments in Hampstead, North London into a luxury three-storey home by knocking the two buildings together and expanding into the loft.
The house will eventually be worth an estimated $3.2 million (£2 million) once the work is complete.
A source tells British newspaper The Sun, "It's an ambitious project but it's being done with minimum disruption."
The writer put in a planning application to erect two-storey wooden buildings with bay windows costing $387,000 (£250,000) in the back garden of her expansive property.
Several local residents complained about the construction of the treehouses, but officials at Edinburgh City Council have given Rowling the green-light to go ahead with the project after deciding it would not have a negative effect on the conservation area.
The buildings, which reportedly look like the Hogwarts school in the wizard book series, are for the multi-millionaire's two children, David and Mackenzie, to play in.
The Usual Suspects star was dining at the Peninsula Hotel on Thursday evening (09Aug12) when he spotted the woman in distress and rushed to help her.
Baldwin tells the New York Daily News, "All of a sudden every head turned because there was this loud bang. It was this girl, fallen on the floor."
The woman started having convulsions and was foaming at the mouth.
The actor adds, "It was pretty violent."
Baldwin, who realised the woman was suffering an epileptic fit, kneeled down beside her, held her hand and "said a few prayers". The born-again Christian adds, "I wanted to make sure the young lady was OK and her breathing wasn’t restricted."
According to the actor, the seizure lasted more than three minutes before the woman came to.
Baldwin says, "She started going, ‘Where am I? What happened?' I asked, 'Do you have epilepsy?' and she said, 'Yes'. Then she started crying."
After the woman was attended to by a nurse, he spoke with her mother on the phone to assure her that her daughter was OK.
He adds, "The mom starting asking questions about the seizure. There are characteristics of the seizure that she has to report back to her doctor... When it was over, I never got her name and they never asked for mine. I’m just glad she was OK."
Ironically, the day had started in terrible fashion for the hotel - a man jumped to his death from the 22nd storey of the Peninsula.
The writer has had plans drawn up and her son David and daughter Mackenzie are to each get their own two-storey wooden buildings with bay windows in the back garden of the family's Edinburgh, Scotland home.
Rowling has submitted an application for planning permission to Edinburgh City Council and the construction, which is said to look like part of a Harry Potter film set, will feature interlinking tunnels, a rope bridge, spiral staircase, fireman's pole, trap door and a stainless steel slide.
A spokesperson for the Council tells Britain's Daily Express newspaper, "We have received an application and it will be considered in the usual way."
Kennedy, Jr., the son of assassinated politician Robert F. Kennedy, became embroiled in a bitter divorce and custody case with Mary after filing to end their 16-year marriage in May 2010.
He sought out an order of protection against his estranged partner last September (11) "for the sake of my own safety and sanity", telling a judge Mary was a trained boxer who was prone to fits of violence.
In his affidavit, obtained by Newsweek, Kennedy, Jr. told a judge Mary, who killed herself last month (May12), suffered from borderline personality disorder, threatened to commit suicide if he left her, and ran over his dog when he eventually moved out.
He even claimed to have once thrown himself out of a second-storey window to save himself after Mary lashed out at him in the middle of the night, and confessed to cheating on her to escape their marital woes.
Mary's relatives are fuming after the release of Kennedy, Jr.'s sealed 60-page affidavit, which they have branded "nothing more than a brutal psychological weapon in the divorce case".
A statement from the family reads, "The affidavit, which Mary repudiated at the time, is full of vindictive lies. This latest piling on is proof perfect of the unbelievable emotional and psychological abuse that Mary endured during the last years of her life, and now in death.
"Our hearts are breaking for what her children continue to witness. We hoped Mary could rest in peace. There will be a time and a place for the true facts to come out."
Mary was found dead aged 52 after hanging herself in her New York home on 16 May (12).
The movie star was determined not to rely on a body double for action scenes in the sequel, but his advancing years left him suffering bumps and bruises, and he has decided to take it easier in future.
Smith tells U.K. talk show host Graham Norton, "I started off thinking, 'I don't need a stuntman, I'm Will Smith! What do I need a stuntman for?' Then I had to jump out of a second-storey window and we did it eight or nine times... I remembered I am 42 and I'm like, 'Can someone go get the stuntman from his trailer? We don't need him but just get him to come out and watch the next one!'
"It takes longer to heal up after those things and I'm doing less stunts in the future."
The Hostel director is hoping the Goretorium attraction in Sin City will become a "world Mecca for horror fans".
He tells Deadline.com, "Horror fans know that with my name on it, it won't be for little kids. They know it will be a very scary experience."
The multi-storey haunted house isn't the first time Roth has taken pleasure in give horror fans a real life scare - he has had huge success with the Hostel: Hunting Season maze at Hollywood's Universal Studios.
A franchise is already expected for Goretorium, with plans in place to open branches in London, Tokyo and New York.
The Vegas venue will open in September (12).
The Manhattan brownstone, which featured as the Upper East Side pad of Sarah Jessica Parker's writer character, is next door to what used to be the TV show's production offices.
The four-storey home, which features five bedrooms, was bought by the current owner late last year (Nov11), according to UsMagazine.com.
The actor purchased the five-storey complex in Manhattan's East Village back in 2010 and several months later he received notice from Landmarks Preservation Commission officials that the building, constructed in 1852, would be reviewed for induction in 2012.
However, in a bid to make his future home more modern, Schwimmer demolished the estate and built a new home with an elevator and rooftop terrace on the property, thus destroying its landmark eligibility.
And the actor's plans have caused an uprising in the area with many surrounding residents chastising the star for ruining the neighbourhood.
City employee Jay Russo, who grew up nearby, tells the New York Post, "The Landmarks Commission is looking into these buildings, but before they are landmarked, people are coming in and tearing down the buildings."
The star pushed his body to the limit to shoot director Darren Aronofsky's 2008 action drama, in which he portrays an ageing professional grappler attempting to make a comeback.
But Rourke admits the strenuous shoot took its toll on his ageing muscles and he was left so crippled with pain, he and his house help Javier broke down in tears at the thought that he was dying.
He says, "He (Aronofsky) gets the most out of you... I never did a backflip in my life, and you know, I'm no spring chicken - my legs are gone, my back is gone...
"So the night of the wrap party, I lived in a three-storey walk up (and) I had my trainer - literally I had to hold on to him. My knees were shaking, my legs were shaking. I got to the couch and started crying, started breathing real funny (sic). I couldn't speak. I had this really great gay houseboy, named Javier.
"I didn't know if I was dying - I called my priest, my doctor... So he explained to me what was going on, I was just exhausted. So I'm crying, Javier's crying, and Javier's crying more than I am so I'm thinking I must be in bad shape 'cause Javier's sobbing, screaming. He's going, 'Oh papi!' He's hugging me, we're crying together. I thought no more physical movies, that's it. I'm never gonna do a backflip, never gonna do a push up..."
But Rourke, 59, broke his own vow when he signed up to star in the mythological Greek epic Immortals, one of two action films he's got lined up.
He adds, "And (then) I got this movie (Immortals). It's not that physical, but I got another movie coming up and I do it all again."