Two front doors, because the unit owner and the board are not the same visitor
A single homepage funnel that tries to serve a homeowner and a procurement decision usually reads as a sales pitch to one and a shallow brochure to the other.
Put the split in the primary navigation and in the hero, in plain words: homeowners here, buildings and associations here. Do not hide the building path under services or about, because the person looking for it has usually been given your name by someone and will leave rather than hunt.
The homeowner path can behave like a normal consumer path: product ranges, what the work involves, honest pricing context, photos, a way to book a measure. The building path should behave like a capability statement: what you have installed at scale, how you protect common areas, how you handle residents who miss their access window, what handover documentation looks like.
Keep both reachable from every page. A manager who lands on a product page from search should be one tap from the association material rather than reading a consumer pitch and giving up.
This split also lets you write plainly on both. You stop hedging every sentence to avoid confusing one audience with the other, and the copy gets sharper on both sides.