Not only is it a great idea, it’s an idea whose time has come, and if you don’t do it — someone else will — so it’s an inevitable idea.
Don’t be dissuaded by people telling you that you will be sued by lawyers for defamation. You won’t. But you will be annoying a lot of vested interests, and they may seek to bully and intimidate you. If that happens, you are actually proving the value of the forum you will create. Freedom of speech is being degraded on a daily basis by our government in Australia, but it’s still there.
You will, of course, want to inspect and assess posts before they are published on the website.
You’ll obviously want to mandate very rigorous and explicit rules and guidelines for what may be posted — and what kind of content will be deleted.
We are owners-occupiers in an apartment and own another apartment. We would be happy to post reviews. Happily, I think our reviews would mainly be constructive and positive.
Renters could post reviews of the complex they live in. Noise, maintenance, rubbish collection, leaks, etc.
Owners could post reviews of the same — they could also post assessments of the performance of the owners corporation executive committee, and the strata title management company used to manage the facility.
You may need to decide whether you want real estate agents posting reviews.
You may want to decide whether you want to allow ‘replies’ to review posts. Those tend to get a bit out of hand, but it’s social media, so not allowing replies reduces engagement value.
Good luck.