I've built each of my family members' houses - 6 in all. I go as far as I possibly can to make everything match up. All of my buildings have styrene outsides.
I'll cite a few examples:
1. I will not use plastic sheets for brick or block that are out of scale for 1:48.
2. When I built my house, which has aluminum siding on the peaks, I shopped and shopped until I found sheets that had the correct width for the siding.
3. I hand fashioned every window and door in all 6 structures to get them to perfectly match to the real ones.
4. I even landscape each building to match the real landscaping.
I don't think when it comes to model construction that it's abnormal to do these types of things. Therefore, if someone's passion is their railroad, why not have those same desires?
- walt