The vehicle smashed into the house in West Pennard, near Glastonbury, Somerset, after colliding with an articulated lorry on the A361.
The homeowner, who was at his desk at the time of the crash on Friday morning, suffered minor injuries and was taken to hospital.
Crews are working to remove the truck and stabilise the building.
Devon and Somerset Fire and Rescue Service said three vehicles - an articulated lorry, taxi and tipper truck -were involved.
A spokesman said two gas cylinders had been damaged in the incident and a 50m cordon had been set up.
"An urban search and rescue module has been mobilised from Exeter to stabilise the building and a structural engineer has been requested from the local authority," he said.
The A361 is currently closed in both directions.

The Levada Centre surveys political opinion among Russian people.
Its director, Lev Gudkov, said the move, which comes two weeks before parliamentary elections,  amounted to "political censorship".
Laws require all NGOs receiving any overseas funding to register as foreign agents and so face restrictions.
The Levada Centre cannot now conduct any work linked to the election campaign.
Mr Gudkov told Agence France-Presse news agency: "The consequences of such a decision for us are devastating - with such a label, we won't be able to work.
"This practically means the imposition of political censorship and the impossibility of independent polls. It's the typical behaviour of this repressive regime."
The other main pollsters are state-controlled.
The justice ministry said Levada had been "included in a register of non-commercial organisations that fulfil the functions of a foreign agent" following an unannounced document check.
Legislation passed in 2012 has designated as foreign agents a number of rights groups,  including Memorial, and the independent election monitoring group Golos.
The Moscow Times said the latest move followed a complaint by the pro-Kremlin Anti-Maidan movement over alleged US funding of Levada.
In May 2013, Levada had said it was being targeted for branding as a foreign agent and had suspended foreign funding.
The Russian authorities say the law is needed to protect Russia from outside attempts to influence internal politics.
But critics say it could be used to prevent NGOs denouncing vote-rigging and other abuses.

The left-back was expected to miss Saturday's defeat by Aberdeen while he sought the advice of a specialist to help with a hip complaint.
But Clark was impressed as the former Rangers defender declared himself fit.
"He has shown the courage that he wants to play through the little injury problem he has," said Clark.
"He didn't look like he had any injury on Saturday."
Smith could not prevent Kilmarnock losing 2-1 to the side sitting second top of the table and falling five points behind Hamilton Academical in their battle to escape the play-off place.
However, Clark said of his captain: "I saw him bombing down the line in the 94th minute to try and put a cross in as we chased an equaliser.
"So I was really happy he was back in the team.
"It's no co-incidence we looked a stronger team when Stevie was back in.
"He's a good example to everyone else in the squad that, as captain, he's willing to put himself forward when not 100% fit and roll his sleeves up. That's brilliant for me."
However, Clark insisted that he would not want Smith to do anything that would cause problems with his career.
"I'm not a manager who wants to put somebody in jeopardy by making an injury worse, but it's great to see him putting his body on the line to help the club," he added.
"We are hoping to manage him through until the end of the season.
"Ultimately, it will be down to Steve whether that proves too difficult.
"Some sessions he might just work with the physio, but he's an experienced player, he's got good fitness levels and knows his body, so we're prepared to work with him to get him out on the park on a match day, because having him there will be crucial for us."
A man has been injured after a tipper truck ploughed into his cottage and ended up embedded in a wall.
[NEXT_CONCEPT]
Russia's leading independent polling agency has been labelled a "foreign agent" by the justice ministry and says it cannot now work.
[NEXT_CONCEPT]
Manager Lee Clark has praised captain Stevie Smith for playing through an injury in an attempt to steer Kilmarnock clear of relegation.