It appears that getting builders for large contracts is exceedingly hard these days, so I don't know that Classic Builders (or any large business in that field) need to be drumming up business. Saying that, it could simply be a community or brand exercise, so who knows. I've always thought that given major international brands spend on marketing (coke, mcd's, starbucks, ford etc.) that given the likely TV coverage even prior to the upcoming season, shirt sponsorship would be a drop in the ocean.