A pergola changes how you use your yard, turning a patch of grass into an outdoor living room. Installing it in late winter means you avoid the spring scramble when every contractor is booked solid.
You should aim to get at least three quotes from local carpenters to ensure your $3500 estimate is accurate. Booking during the off-season can sometimes get you a better rate because labor demand is lower.
This 0% interest offer is a deadline, not free money. If you have a remaining balance after the 18-month intro window ends, the bank will start charging interest on whatever you still owe.