How do you know the lack of centralization is holding you back?

There's a company that owns seven restaurants in my town, but you'd never know it by looking at each restaurant. They all have their own branding, target market/ideal customer, menu and so on.

What I'd recommend first is an assessment of existing assets. You well know people at different stages of their life and circumstances buy and sell for different reasons (first time buyers vs empty nesters, professionals moving into the city for work, etc.). It may be better for each office to focus on one of these, rather than homogenizing them.

I do this kind of work but am not the $10/hr kind as the impact is strong.