You want to inform past or potential clients of what you are doing and keep your name in front of them.
Write a couple of sentences about what is going on; add a picture; and you're done.
MASTER LIST (key opportunities = #)
- new commission #
- design concept (3D?)
- final design (3D?) #
- contractor selection
- ground breaking (whether ceremonial or not) #
- framing going up
- topping out (whether ceremonial or not) #
- interior / exterior progress
- exterior complete #
- dedication / open house #
Don't make a big deal out of each post or it won't be sustainable. A photo and a caption is all that is required. This is easily delegated to just about anyone who is willing to help. The cost of building a reputation this way is insignificant and so is the effort.