I do think consumer-level, fighters and freighters would be similar to modern day in building in the Houses. I think the additional technology to build things better would be offset by how much more would have to go into ships, including safety checks and all that.
I think most transports should be compared with train building today. I don't know how long that takes, however.
I see battleships as similar to carriers today. Or at least those giant supertankers.
That is definitely for in the houses though. Smaller groups and isolated factions would never be able to get that sort of industrial production. Manhattan may have several billion people, but what is the population of the less crowded places? How long would it take for a modern day criminal organizations to build a car?