Ricci Gallagher, 46, died in hospital a week after being injured at the farmhouse in Little Burstead, Essex.
It is owned by Richard Glanville, the ex-chief financial officer of a fashion firm that owned Oasis and Warehouse.
Mr Glanville and another man have been questioned on suspicion of attempted murder. Both have been bailed.
The victim's wife, Linda, said they had been excited about building their new home in the village, which they had moved into a week before.
"Ricci was a very kind, considerate person with a great zest for life and was liked by all who met him," she said.
"He was easy-going and good fun.
"Ricci and I had a very happy marriage and were excited about the new phase in our lives with the move to Little Burstead."
Mr Gallagher had reported a fire at his home about half a mile away in Blind Lane, minutes before police were called to the farmhouse on Sudburys Farm Road on 30 July.
Police said they were linking the incidents and were investigating why Mr Gallagher had been at the farmhouse.
It is understood one line of inquiry is Mr Glanville may have found Mr Gallagher inside the house.
"The tragic events that have unfolded from the day of the fire at our home... have left me and my family devastated," said Mrs Gallagher.
"I would ask for anyone who can help the police to do so... and finally ask that we now be left to come to terms with this terrible tragedy and grieve in private."
Officers are particularly keen to trace the drivers of a lorry and a Vauxhall car seen between 09:00 and 09:30 BST on 30 July.

Witness D, now in his 40s, told the Independent Jersey Care Inquiry he was too scared to report the abuse he suffered to the authorities.
He was in the home from 1981 until he left care in 1984.
His testimony suggested there was widespread abuse of residents by other residents.
Much of his evidence was too graphic to repeat but on two occasions he said he witnessed violent sexual attacks on female residents.
The perpetrators were older male residents and in one attack, were accompanied by an older male, Witness D said.
He said he was sexually abused by two members of staff, William Gilbert and Phil Le Bais, and was also physically abused by Morag Jordan.
Gilbert and Le Bais were never charged and are both dead while Jordan was jailed in 2010 for other abuse offences at the home.
Witness D said he left care a broken child and the incidents he described were the tip of the iceberg.
Consensual sex between teenage residents was so common that it made abuse easy, he said.
He told the inquiry: "It was a normal thing that was happening. You'd see it happening and little was done about it."
He said he was also regularly abused by an older male he called Child X, but had never reported him to police.
The man said he still refuses to name his attacker because he remains scared of him.
Asked if there was anything he would like to say to the authorities now, Witness D said: "The general public do not realise how bad it was at Haut de la Garenne.
"I hope they have learned that just because you are in a care home does not mean you have done something wrong."
The inquiry continues.
The widow of a man who died after being found injured at an ex-fashion executive's home has said they had been "excited" about their move to the area.
[NEXT_CONCEPT]
Consensual sex and sexual abuse were both common at the Haut de la Garenne children's home in the 1980s, a care inquiry has heard.