now understand that these are just my thoughts and YMMV. So here goes
The most expensive way to find new customers is to advertise for them. The cheapest way is to work for them I’d go another step and get others to find my customers for me.
We ALL want to get the kind of new customers that money can’t buy, REFERRALS.
Getting a referral from a happy customers is a good start, I think the gold is getting 45(or whatever the number is) referrals from each of
The Maid service
The window cleaner
The lawn care service
The exterminator
The furnace tune up guy
the pool guy
Make a list
I think Your contact(deal) with the door man is OUTSTANDING!!
Seek out these people, do what you have to do to get them making the referrals and that will build your client list faster and cheaper and better than anything.
Again, understand that these are just my thoughts and YMMV.