Kevin McCloud, who hosts Grand Designs on Channel 4, said the long-running series was partly responsible for the plethora of similar-looking homes in which so many people seem to want to live.
The series, which began in 1999, follows members of the public as they plan and build the homes of their dreams.
It regularly pulls in audiences of more than five million viewers, but McCloud says its success has come at a price.
"We've had a rash of applications for designs that five years ago we'd have rushed to film – basically, white, rendered, rectangular boxes with punctured projections, wood-clad or slate-clad with some glass," he told the Radio Times.
"That's more or less a cartoon description of that type of building. And I'm afraid to say that if Grand Designs hadn't been around, perhaps we wouldn't have seen so many of those being built. But five years ago we were campaigning to get people to build modernist buildings, so I'm not going to grumble."
He added: "The other thing that we've unduly promoted are green oak-framed buildings – I don't want to touch another bloody green oak-framed building if I can help it."
McCloud, 49, said he feared people were no longer personalising their homes but were designing them just to make money.
"There's nothing wrong with making your home as beautiful and as personal as you want it to be and as right as you can possibly get it," he said.
"Because your immediate environment is the one you spend most of your time in; your home is the most important piece of architecture in your life.
"But the last thing I'd want people to do is to go out and just copy something because they think it will help sell the house more."
He added: "There's nothing sadder than designing a house, that you live in, for no one. What you should be doing is designing and decorating it for you – it's your place. Homes. Are. For. People."
Kirstie Allsopp, who presents Channel 4's Location, Location, Location, recently defended herself against accusations that she and other presenters of property shows distort the housing market and encourage people to buy beyond their means.
The presenter, who advises the Conservative Party on property issues, said the show was about helping people to buy the "right" home rather than forcing them to buy overpriced properties. "People had been asking me even before the sub-prime and credit crunch whether I felt I was responsible for the hike in property prices and first-time buyers finding it hard to get on the ladder. Absolutely not," she said.
Television programmes such as Changing Rooms and other home improvement series have been blamed for turning Britons into obsessive do-it-yourself enthusiasts. Surveys have shown that while most Europeans associate bank holidays with having a good time, more than half of the British adult population regard them as an opportunity to visit a DIY store.
But the national obsession with DIY has led to thousands of injuries over bank holiday weekends, costing the NHS billions of pounds.
