Jamie Theakston is at war again with his wealthy neighbours after submitting plans to build a state-of-the art gym and office in the back garden of his £6.5 million mansion.

Heart FM’s 50-year-old host wants an outbuilding to be built in his garden. It will measure 43 feet wide by 10 feet tall and is situated within Chiswick Conservation Area, West London, where a lot of rich and famous individuals live.

A CrossFit-style gym would be built in the controversial proposal. There will be enough room for box jumps, battle ropes, and push sleds to keep him fit.

The home will include a kitchenette, a wood-burning stove, and a bathroom.

Theakston has already had strained relations with his wealthy neighbours since he was granted permission to build his four-bedroom family home in his back yard in 2018.

As more than 20 people opposed the Hounslow Council’s plans department, they accused him of cultural vandalism. To make space for this historic coach house, several trees were cut down.

Heart FM host Theakston, 50, bought his stunning five bedroom home in west London for £3.8m in 2010. He spent two years renovating it before it appeared on the TV show 'Through the Keyhole'

Heart FM host Theakston, 50, bought his stunning five bedroom home in west London for £3.8m in 2010. He spent two years renovating it before it appeared on the TV show ‘Through the Keyhole’

Now he wants to build a state of the art CrossFit-style gym with plans (above) that he has submitted with his local council. The outbuilding will be 43 feet wide and 10 feet high and will be used as an office with a log burner, shower and toilet

He now wants to construct a CrossFit gym in the state of art. The plans (above), he submitted to his local council. This outbuilding is 43ft wide by 10ft high. It can also be used to house a log burner, toilet and toilet.

Theakston (pictured) has riled neighbours at the property where he has lived for 11 years with his building plans

Theakston (pictured), has upset neighbours on the property where he lives for over 11 years. He has his plans to build a new house. 

The stylish three-storey property, worth an estimated £3 million was not sold by Theakston and is rented out to a family of four.

Rents in the area for similar homes are around an eye-watering £6,000 per month.

Before the construction was approved, Theakston’s wife Sophie had lost an earlier bid for a building a gym and an indoor pool in their back yard. This angered neighbours.

They are now fuming even more after his plans to build a gym and an office were submitted at Hounslow Council.

MailOnline was informed by a neighbor that this is the latest issue with Theakstons. These plans are absurd; they will create an eye-sore and monstrosity.

“Some houses will have their views and light affected, while other trees will need to be cut down in order to construct it. Theakston is ruining this beautiful conservation area and the council has given him permission to do so. It is an embarrassment.

A neighbor added, “We’re all angry that Jamie Theakston has proposed an outbuilding which does not match the surrounding area.”

“The building of a home in the back yard has created enough problems. It required the removal of several trees and will now be replanted.

Many neighbors already objected to the decision by the local authority. 

The Heart FM DJ built this three-story property at the end of his 121ft-long garden and is now renting it out to a family of four

This three-story home was built by Heart FM DJ at the end his 121-foot-long backyard. He is renting it to a four-person family.

Theakston built it right next door to the home belonging to the son of late film director Sir Richard Attenborough. When he submitted the plans (above) in 2018, Michael Attenborough told MailOnline of his fury at the project

It was built right beside the house of Sir Richard Attenborough’s son. In 2018, Michael Attenborough spoke out about his anger at Theakston’s plans to MailOnline.

The picture above shows how Theakston's back garden and Attenborough's property looked three years ago before building work began on the site. It has been a source of tension between the neighbours ever since

The above picture shows Theakston’s backyard and Attenborough’s home three years before the construction work started on this site. Since then, it has caused tension among the neighbors.

One responded, “We are all working together and determined to stop this.” We’ve been in contact to the council to express our disapprovals. They will hopefully act with more force than the one they used in relation to the Theakston house issue, but I doubt it.

“I don’t like to talk about him too often, but I will say that he is not popular here.

Sophie Theakston, Theakston’s spouse, refused to speak out about their proposed new building. She told MailOnline that she was not going to reveal any details.

Theakston, Sophie and their three children live at the house with Sophie. 

Famous residents include Phillip Schofield and Declan Donnelly, TV presenters; Jeremy Vine; and the actors Colin Firth & David Tennant.

According to documents filed as part of the plan application, the outbuilding will take the shape of a rectangular building with an extended section at its rear that is cut off “to harmonize with the angle of their rear boundary.” It will feature cladding made of charred timber.

It is stated that the accommodation will be used only as an incidental part of the main house and not for primary living.

The gym will likely be a major part of Theakston’s exercise routine. Five years ago, the former Live & Kicking presenter lost more than half his body fat after pursuing a punishing exercise programme.

The battle over Theakston’s home at the backyard of his yard saw him clash with Michael Attenborough. This was the son of Richard Attenborough who directed the film. The house adjoined Attenborough’s semi-detached property.

At the time, he said that Mr Theakston had told him his plans to build the house for the highest price and then sell it. But I doubt if he considered the effects on his neighbors.

“He does not do anything illegal because the house is built on his property, but it will impact our home for 30 years.

“If this goes ahead, then we may have to seriously consider moving as the environment will change. It is not clear to me why he chose to move to the conservation area, then set about trying to make things better.

He continues to reside in his home despite all his protests.

Theakston bought his stunning five-bedroom property that sits on a corner plot for £3.8m in 2010. Theakston shares the property with Sophie and their children.

Theakston and Sophie live in this beautiful property (pictured) in the highly sought after leafy west London suburb of Chiswick not far from where TV stars Ant & Dec live

Theakston and Sophie live in this beautiful property (pictured) in the highly sought after leafy west London suburb of Chiswick not far from where TV stars Ant & Dec live

Theakston's wonderful home was featured on the ITV show 'Through The Keyhole'

He has spent money doing up the property including a rear extension (pictured)

Theakston’s amazing home was shown on ITV’s “Through The Keyhole”, where the star opened his home up to the camera so viewers could see the luxurious lifestyle he leads.

The couple carried out extensive renovation work on their spectacular property

Theakston's back patio looks out on to the back garden where he wants to build

The couple carried out extensive renovation work on their spectacular property before putting it back on the market on 2013 for £6.5million, which would have made it the most expensive house in the area had it sold

In a 2010 interview the radio personality revealed how he had bought his first home aged 21 in trendy Notting Hill and by his late 30s had traded up by moving four times. Pictured: A living room at the star's five bedroom, west London home

The radio host revealed in a 2010 interview that he bought his first house at 21 years old, located in Notting Hill. He then moved four more times by the end of his 30s. Pictured is the living area in star’s West London residence with five bedrooms.

He undertook a massive renovation project that lasted two years and in 2013 put the double fronted house – which once featured on the TV show ‘Through the Keyhole’ – up for sale at £6.5m.

The house would have been worth six miles outside of London if it had not been sold.

Theakston, Sophie and Sophie decided to sell the house as there were no buyers.

There is no date yet to be set on the final decision on Theakston’s outbuilding proposal. Hounslow Council has stated that they cannot comment on any pending planning applications.