Boston's most expensive home lists for $29.9M: Historic mansion has cobalt blue room, zebra-print carpet, rainbow staircase and skull décor

Boston's most expensive single family home has gone on the market for $29.9 million along with some bold design choices. 

The 19th century mansion built in 1882 is situated in the city's Back Bay area along Commonwealth Avenue. 

It's full of audacious design decisions, from a cobalt colored living room, a chess board flavored hallway, and plenty of skeletons, not in the closet, but in the shower. 

The price tag is the most expensive single family home for sale in Boston with more than 10,000 sq ft of space complete with six bedrooms and seven bathrooms, set over five floors. William Montero of Sotheby's International Realty is serving as the listing agent.

The current owner, venture-capital investor Kevin Starr, is now selling the home after his family moved out to the Boston suburbs. 

Boston's priciest single-family home has hit the market for $29.9 million complete with this cobalt living room 

Red, orange, blue and purple steps lead the way upstairs to the second floor of the home

Black oak paneling give the room a gothic feel 

19th-century mansion spans more than 10,000 sq ft across five floors in the Back Bay area 

The home spans five stories along Commonwealth Avenue in Boston

Skulls appear to be something of an obsession for the current owner 

A scary skull is seen in the white marble bathroom of the lavish home 

When there's an absence of color, shades of grey dominate in one of the six bedrooms

In the kitchen, a blast of orange breaks up the black and white color scheme

Intricate wood carvings and moldings sit above a fire place 

Aside from the cool blue living room, the kitchen area is furnished with a shiny black wooden floor, while the home's staircase is a mix of bold choices with different colored stairs leading up to the second floor. 

Red, orange, cobalt, blue and indigo steps lead the way. 

Many of the home's floors, if not carpeted, or painted in a shiny black paint, making four some stark reflections. 

Skeletons are not only in the shower but also run along one of the homes corridors and can be seen in artwork on the walls, including the wallpaper, which also showcases the owner's fascination with skulls. 

Starr worked with designer Eric Roseff who likes to uses bold colors in his work.

Starr spent a year on a multimillion-dollar renovation that led to the addition of plenty of skulls. 

'A lot of people think skulls are creepy, but he sees it as a joyous sign of life,' Roseff said. 'When a fetus is forming, the skull is the first thing formed. At the end of life…the skull is what remains.' 

Roseff said the home is a reflection on Starr's personality.

'His vibe from the beginning was the feel of a boutique hotel,' Roseff said to WSJ. 'He likes a little bit of Miami thrown in, a little bit of Vegas thrown in.

'We wanted it to have a real lounge-y vibe—like a 1970s coke-den vibe,' said Roseff.

'It's intoxicating, it's inviting, it's sexy.'

The lighting in the home is equally original with black chandeliers dangling from high ceilings in the kitchen and hallway. 

Blue is the color when it comes to this reception room room 

Bold and brash artwork dominates the home's walls and chairs 

A chessboard floor and black chandeliers make for an imposing impression 

Shiny, black varnished floors run throughout this reception room

The hallway sees black floors and carved, wooden bannisters 

Natural light floods this dining areas in the sleek, black and white themed kitchen

Three black chandeliers hover above a breakfast bar area in the kitchen

A cozy living room is decorated with black varnished wooden walls and intricate wood carvings and moldings, above one of five fireplaces in the home that appear to give it a Gothic feel. 

'Behind wrought-iron gates on Commonwealth Ave this stately 19th-century lime-stone mansion spans over 10,000 square feet, artfully transformed to emulate the ambiance of a stylish boutique hotel,' the listing details. 

'The interior design skillfully merges classic architectural details such as ornate moldings, intricate woodwork, cathedral ceilings, five fireplaces with bold modern touches.

'A limestone façade invites you into a lavish parlor level, complete with a grand reception hall, a library adorned with black oak paneling and a temperature-controlled wine room,' the listing continues. 

There's plenty of shelving for a fully stocked bar in the blue room 

Orange high back chairs make for a striking seating choice next to the colorful staircase

The striking design is visible to all who walk in through the front door of the home

A cozy fireplace adds some warmth to this black and white wood carved room

Bay windows allow for a panoramic view of the street outside 

Zebra print carpet can be seen in this flight of stairs that leads up from the kitchen area 

On the top floor, wooden floors are the order of the day in a more modestly designed room

Bright orange cupboard give bold blocks of color in the solidly built kitchen

A temperature-controlled wine room with space for 2,200-bottles is begging for a new owner to move in

There are panoramic views of the city's skyline from the roof of the home 

'The luxurious living room features Juliet balconies that offer stunning views over the iconic Commonwealth Mall.

'The penthouse level includes a breathtaking roof deck providing panoramic views of the city skyline. This home embodies unparalleled craftsmanship and enduring elegance.' 

Starr purchased the home, which comes complete with six parking spaces, for $11.6 million in 2015 and worked with designer Eric Roseff on the multimillion-dollar renovation, transforming the interiors with the new design.