Ashton Kutcher renovates childhood home as early Mother's Day present

Actor Ashton Kutcher is planning to give his mum a Mother's Day to remember by renovating his childhood home in Iowa in honour of the holiday this weekend (10May15).

The Butterfly Effect star teamed up with interior designers at online design site Houzz, of which he is an investor, to document the remodelling process in a video series, more than two decades after he helped his stepfather Mark build the house "from scratch".

In the footage, he explains, "It's my way of saying thank you to my mum. My mum has been the greatest influence in my life - my parents gave me everything. They went to great sacrifices to give me the life that I have and anything I can do to say thank you is the right thing."

The new dad wanted the renovations to reflect "how my parents live now" and "how they're going to be living with grandkids running around".

It took Kutcher and company 27 days to complete the project before he revealed the big surprise to his shocked mother.

He says, "Being able to do this for my mum, it's like a lifelong dream. You know you grow up and you have a good parent, and I don't know that there's anything I could ever do that really says thank you, but trying sure feels good."

The remodelling includes a bedroom with bunk beds for her grandchildren, including Kutcher and fiancee Mila Kunis' baby daughter Wyatt.