Remodeling/real-estate cable hunks Drew, left, and Jonathan Scott star in a new HGTV home-redo competition show called “Brother vs. Brother.”

On their HGTV hits “Property Brothers” and “Buying and Selling,” remodeling/real-estate pros (and twins) Drew and Jonathan Scott help clients purchase, unload and rehab houses. But in their new show on that channel, “Brother vs. Brother” (10 p.m. Sundays), the sibs square off against each other, captaining teams of home-industry pros for the entire season as they redo two homes.

Why did you guys want to do a competition-style show?
Jonathan Scott: There’s just a natural sibling rivalry we’ve been working on for 35 years.
Drew Scott: Plus, I think our fans will find it comedic to see Jonathan wielding a hammer [laughs].

What are the two crews on the show competing for?
DS: The point is which team can add the most value to each home. And you’ll see that something like lime-green walls in a kitchen aren’t going to win this competition.

Experts always say redoing a kitchen or bathroom makes a house easier to sell. Is there something else that helps?
DS: Even if you have those two rooms updated, you’re not fooling anyone if everything else is dated.
JS: Plus, it’s easy to overlook the footprint of older homes. If you open up the floor plan, you’ll change the whole feel.

How much do group dynamics affect what happens on “Brother vs. Brother”?
DS: I think all of the contestants have alpha personalities, and they all want to impress us. But when you’re working on a group project like this, being a ball hog or showboater won’t help you.

Your shows must inspire a lot of people to DIY. What’s the key to that working out well?
JS: Make sure that your renovations will add value to your home.
DS: And educate yourself before taking on a task. You don’t want to start hanging drywall without knowing what you’re doing.

How do you know, in a home project, when you should call a pro?
DS: When you pick up the hammer by the wrong end, it’s time to call us.

If you’re doing renovations, how can you make sure they won’t look dated too quickly?
JS: Plan for what you’re living like, but also think of future resale. The bolder you go in a renovation, the faster it’ll go out of style. Try to keep colors on hard surfaces — counters, floors — more neutral, then put in colors with area rugs and curtains.

In renovating an older house, how do you know what to modernize and what to preserve?
DS: A lot of times, what people really want to do is preserve the outside of a heritage home and modernize the interior.
JS: There’s good old and bad old. The key is figuring out which something is. Like you can make Grandma’s chair modern with new upholstery.

Jonathan, you’re actually a magician in addition to an HGTV star. Does that affect your shows?
JS: It actually does. Creating an illusion in magic is a lot like what you do when you redo a house. It’s about creating visuals and a mood.