How big is market for replacement doors

[Guest]

Thanks for the input so far, but to clarify:

a) I am not an established fitter and am initially just looking at this venture as a stand alone (part time) business.

b) Direct sales is accepted as the (only) way to go.

c) The franchise is for a new geographical area so there is no set of current accounts to look at, though there are adjacent areas whose accounts might be available.

I can see that most people who replace doors DIY, but I assume that there is a market for "fully fitted" replacements, in the same way that there are handymen who make a living "fitting" Ikea furniture for people too clumsy to do it for themselves. The question is how big a market?

I am trying to asses two things:

1) Is there going to be enough business to cover all of the fixed costs of operating this business, leaving a modest income, in replacement doors alone, or is it only possible to make a living doing this by "upselling" a percentage of contacts to (nearly) full replacement, something that I am reluctant to do in the short term.

2) Is the franchisor going to be happy with just a "minimal" order from replacement doors or will they expect to be selling multiple full kitchens each month? (I realise that they will tell me this, but I don't want to appear completely unprepared for the suggestion).

Thanks