Local professionals have their usual sources of information, but they are French-speaking.
These are reliable, meant for people professionally involved and often quoted.
Business Immo specializes in real estate proper:
https://www.businessimmo.com/
Le Moniteur seems to be an unavoidable bible to our architects :
https://www.lemoniteur.fr/
And I think Batiactu is more about construction engineering, but it's definitely interesting to follow for developers and real estate pros :
https://www.batiactu.com/
Unlike the non-specialized media, none of these would bother you or waste your time with any politics whatsoever; they only focus on their business.
It would be hard to read if you're not familiar with the language specialized in your field yet, but would help you grow really fluent and good at French.
Things like below can also be useful, so you can see local products currently for sale.
https://www.logic-immo.com/annonces-...-75-100_1.html
Finally, you should take a look at the site of Société du Grand Paris, a public agency in charge of developing local infrastructures.
https://www.societedugrandparis.fr/sgp
There you'll find information about various sites currently developed or planned. How they would be served by transit infrastructures in particular.
For instance, since you've mentioned the 2024 Olympics, something like Saint-Denis Pleyel is a significant latest site.
https://plainecommune.fr/pleyel/
That's where they're planning their Olympic Village, a good opportunity for further improvements in Saint-Denis, a municipality neighboring Central Paris to the north, in need of gentrification.
As for languages, generally speaking, the French are a little shy when it comes to speaking English. More so than say North Europeans (the Dutch, Germans, Scandinavians...) whose grammars are somewhat closer to that of English than ours, so it feels more natural to them.
However, of course we've all learned about it. It is simply required no matter what one's occupation may be. So I guess they would speak English (or Franglish for fun) to you, the time for you to learn French.
I've seen some Americans and Asian folks in business in a couple of fields (banking and telecommunications) over the Paris region, who couldn't speak French. That was no real problem for them, at least at work.
Obviously it is better to know some French to socialize, but the most important is to feel comfortable at work in the first place.