More than 1,650 objects have been brought back from 27 countries to decorate the house, where Mr Trevillian lives alone.
Since buying the property in 1990, he has spent £700,000 on the project – £200,000 on building materials and £500,000 on artefacts.
But after losing his job on a magazine earlier this year he says he can no longer keep up with mortgage repayments and has been forced to sell it for £350,000.
Mr Trevillian forks out £2,000 a month on the house, which includes the mortgage, insurance for the high-value content and general upkeep.
The writer, who is desperate to save his home, has also set up a fundraising site to save the house – which is just 18 months from completion – before he aims to give it to the nation so he can travel.
He said selling his house was a last resort, and hopes it will go to a buyer who sees its true value and can finish the job.
Mr Trevillian, from Dunmow, Essex, said: “Some people think it’s totally mad but others say it’s like being in one of those novel where a secret door opens up to a different world and fall in love with it.
“It’s every penny I’ve had for last 24 years – and every weekend too.
“As the house has gone on, I’ve loved it more and more. It’s been the longest relationship of my life.
“I’ve always been interested in English history but being from an ordinary East End of London family, I was never going to afford the sort of house I wanted.
“I picked the most normal house. I didn’t want character because I knew I was going to start from scratch.
“In fact, it was hideous – the bathroom leaked, it had everything wrong with it and it wouldn’t sell. I thought, ‘perfect!’
“I asked myself, where would you like to have breakfast? And I picked 1950s New Orleans for the kitchen.
“I imagined the morning sun shining into an Old Victorian house with Billie Holiday playing in the background. Three and a half years later, there it was.
“I’m looking to sell it to someone who’s interested in the package – including the inventory of items.”
Mr Trevillian’s home features rooms which vary in style from the 1950s New Orleans kitchen, to a Victorian dining room, Cambodian treehouse loft and Scottish Edwardian hall and bedroom.
He used genuine materials from the times, including the Victorian dining room, which saw stone walls lifted into place by crane, and the tree-house loft supported by a real trunk.
Intriguingly the smells have also been engineered – nutmeg and coffee waft through the New Orleans kitchen whilst jasmine fills the tree-house air.
Even the sounds have been tweaked to help muster the right mood.
A sandalwood Buddha from Cambodia, the voodoo charms from New Orleans and Chinese lanterns are also among the 1,650 artefacts that fill the house.
The New Orleans themed kitchen is kitted out with 1950s gadgets, and real Spanish moss weaved into the ceiling.
The swishing of the Bayou River can be heard in the background and hundreds of trinkets and voodoo charms shipped in from New Orleans are displayed in the room.
Mr Trevillian said: “I had to delay the completion for a year because Hurricane Katrina struck just as I was about to head out there.
“The thing about the room is that they feel very real and very lived in. All the objects in the cupboard are from that time.
“I know people expect it to be naff, but each room makes you feel you’re in the place.”
Next door to the quirky kitchen is the Welsh Victorian tower – a living and dining room which has been designed to look like a castle.
It took Mr Trevillian four and half years to complete, with stone walls, a foot in depth, defined with £4,600 worth of oak panelling.
Bedrooms include a haunted Edwardian bedroom which is lit only by candles and a bedroom based on a Moorish palace.