Season 1 (2006) Season 1's theme was apartment renovation.
Keith Cole was the first person named ''Canada's Worst Handyman'' due to his lack of focus. This is the only season filmed in the summer; all subsequent seasons have been filmed during the winter. This is also the first instance of a nominator being named the most improved, as
David Hawe was named as such for doing The Kitchen Sink, Wallpapering and Hanging a Door Challenges correctly.
Season 2 (2007) Season 2's theme was shed building.
Terry Cress was named ''Canada's Worst Handyman'' due to his poor attitude and work ethic, demonstrated when he not only tore apart his eco-shed with a chainsaw in order to remove the shed from the warehouse, but also visibly enjoyed this process (which was considered by the experts to be evidence of a lack of pride in his workmanship). This season saw the first instance of a nominator being replaced (
Angie Cress served as
Terry Cress nominator after his original nominator,
Harvey Houle, was unable to continue for medical reasons). This season also featured the first-ever instance of a contestant being named the worst in consecutive episodes, as
Jeff Gignac refused help from others when needed and made too many mistakes in the Building a Doghouse Group Challenge. This season also featured the first instance of a contestant being named both the most improved and the worst in the same episode, as Terry did more things correctly, despite the usual husband-wife interactions causing trouble, but chose not to finish unfinished work. This season also featured the only instance of a contestant-nominator to be named joint-most improved, as
Jaime García and
Sheilla Stengler were named as such as, despite the usual mother-in-law-son-in-law interactions causing trouble during both The Entertainment Unit and Television Challenges, the fact that they completed the Cork Floor Challenge correctly. This season also featured the only instance of a contestant-nominator to be named joint-worst, as
Candace Landmark and her husband,
Justin, were named as such due to Justin's continual butting-in and Candace's often-futile attempts to take charge, resulting in Justin doing much of the work (although as it turns out, at the time of filming, Candace was three months pregnant with their second child, which explains the real reason why Justin had been doing much of the work). This season saw the only instance of two female nominees (every other season had only one).
Season 3 (2008) Season 3's theme was design and commercial renovation.
Joe "The Bullet" Barbaro was named ''Canada's Worst Handyman'' for his poor design and workmanship in his room and for his perceived lack of progress. This season saw the first time the experts completed each and every challenge themselves in a room on the second floor under identical conditions to the contestants.
Season 4 (2009) Season 4's theme was working outdoors in the cold winter.
Johnnie Bachusky was named ''Canada's Worst Handyman
for his slow progress. This season saw the first-ever expulsion in any Worst Handyman'' series when
Brian Pugh was removed for behaviour reasons (it was later implied that he threatened
Brian Macdonald following the Three Doors Group Challenge). This season also saw the first (and only) instance in which two contestants were named the worst in the same episode, as
Brian Pugh and
Angie Budgell were named as such for leading the team to the ground in the Window Group Challenge and for not passing a single challenge, respectively. This season also featured the second instance of a contestant being named both the most improved and the worst in the same episode, as Johnnie did learn the most during the Plumbing Challenge, but also did the most damage to his bathroom.
Season 5 (2010) Season 5's theme was renovation of a central kitchen.
Deen Flett was named ''Canada's Worst Handyman'' due to his unsafe work, becoming the first person to have been named as such without having been the worst in any given episode. This season saw the second instance of a nominator being replaced (
Joey Larade served as
Simon Larades nominator after his original nominator,
Linda Larade, was unable to continue due to other commitments). This season also saw the only instance of a nominator being named the worst, as
Matt Hanley was named as such for his constant negativity, pessimism and lack of support of his wife,
Angela Finseth, to the point he wants her to fail at everything.
Season 6 (2011) Season 6's theme was transforming a common area into a spa.
Charlene Hunt was named ''Canada's Worst Handyman'' due to her slow craftsmanship, becoming the first (and only) woman to be named as such. This season featured the third instance of a contestant being named both the most improved and the worst in the same episode, as
Dan Lafleurs failure to read the instructions led to him being named as such, even though the other nominees (barring only
Ajay Pal Singh) voted him the most improved. ==Spinoffs==