Loosen Building Codes Slightly, or, A Transporter in Every Home

[voyager]

So you just want it so you can beam from any building in your city? Doesn't seem very useful to me, as that is the job of the airport.

In fairness, for very large cities (say on a ringworld), the airport transporter range may be insufficient. AFAIK there's no real way to discern different airport terminals without using different cities or memorising their IDs.

I already think that building blueprints are too complicated. Allowing you to add transporters to any building, and only have some of them able to actually use them fully just seems like a confusing inconsistency that should be avoided.
See also: (Idea thread) Building Blueprint Simplification

I am in complete disagreement with that thread, so maybe we're arguing from different foundations. The way I see it, buildings are just stationary spaceships that can manufacture things. Under that model, why shouldn't they be as complicated as desired? Also, I'm not sure what you mean by fully use? Just because it can't respond to beamup requests doesn't mean it can't serve as both a sending-off station and location marker for coming-to instead of just putting you somewhere random. For a building that's a kilometre squared, this would be very useful.

If all you want is to have access to transporters from anywhere in your city. Then you simply request a beamup from the airport, and then beam to your desired location from there.
If the airport doesn't reply to beamup requests while on foot, then I would think it is a bug. I can see why it is such since the new-style buildings update changed how communication with cities/buildings work. You used to be able to request beamup from any airport while on foot before those changes.
I made a bug report: (Bug report) Airport Doesn't Listen for Beamup Requests from People on Foot

That's an extra step, has the aforementioned distance limitation and leads to congestion (even if it's RP). Thanks for posting the bug report though, since that does ameliorate the issue for my current cities.