You are right Luke, most of the reward comes from how well you market to your niche.
I have found it most effective to ‘niche by industry’. In your example your niche is residential architecture but you could target the market that already has your clients. These are often builders because many people go to a builder before an architect.
It’s always great to have clients coming directly to you, the architect, but it’s waaaaay faster getting clients by referral from a non-competing industry.
There is a training in the member site on building a database that may help. Here’s the link:
Databases Made Easy