Hey Dave,
Some additional information about the structure in question would help guide the discussion.
What size will the finished building model be?
What types of prototype building material finishes are involved?
How picky are you about the detail and finish quality?
How much do you want to spend?
There are definitely folks out there 3d printing structures, but I tend to lean toward the sentiment that 3d printing for large flat surfaces, and buildings by extension, isn't the best solution. 3d prints can be expensive, more so the larger the printed objects are, and 3d resin prints of large flats have a tendency to warp. Plus you have to create the 3d model.
Instead, I would look at laser cutting or cnc routing. I would expect the cost to be less than 3d printing, the parts are more reliable, and it's all based on 2d cad.
Do you already have a 3d cad skill set, and access to the software, or do you need to learn first or farm out the work? I'd suggest that creating the 2d cad for laser or routing would be easier and cheaper to create than a 3d model, no matter what.
The other thing to consider is if you print the structure as a series of flat parts like walls and roof panels, then you are in the same place as you would be if making the parts with a 2d process. If you are going to try and print the the structure as a single entity, which is less than ideal, then you will end up paying for machine space, support material, and time.
Everything I've just mentioned is of course without context. If you are trying to model a small structure (10 sheets of drawings suggests otherwise) or something particularly complex or organic, than printing may be the better choice. More information is needed.
In the meantime, check out
Polulo.com. They do custom laser cutting, they seem to be well thought of based on the reviews. Also, I know somewhere in the past I read a blog or forum post where a modeler used them to laser cut all the styrene parts for his model of the Tampa Union Station or some similar huge building. It was a while ago, but he seemed pretty happy with the results.
There's a
guy in the UK that does some outstanding laser cutting work, and he does commission work as well. I think if you provide him with information, he can do the cad for the building, figure out the tabs and slots and so on, and also decide on cutting and engraving strategies to render a wide range of material finishes.
There's surely somebody in the states who does the same thing, but off the top of my head I don't know who that is. You might start by contacting somebody that does laser kits. If they don't offer a commission service, they may know somebody else that does.
Lastly, on cnc routing, I'd start by checking locally for a plastic supplier/fabrication house as one of them probably does cnc routing in plastic. The one disadvantage of routing is of course you can't get square inside corners, so either compromise or cleanup will be required.
Like for the plastic, check with a local cabinet shop for wood cnc work. CNC routing is pretty common in finish woodworking shops.
Cheers,
Jim