I *know* this is a loaded, hard-to-answer question, but I need some input re: what to estimate for what I would call "lot prep" - fencing, horizontal utilities, paving streets and parking lots, etc.

Lindsey, most likely no one is going to be able to drill down on your estimate range any further. 50k might be a bit high but in horizontal construction so much depends on the specific site (soil quality, is the lot sloped or wooded, do you have water/sewer at the main road of your future subdivision etc.).

In fact, I might even get a bid to have the drab side done with a similar/same horizontal siding product.Best of luck

@David CampbellSan Diego has the best climate according to many, after 2 storms here in the last week with driving horizontal rain and now its freezing tonight the appeal of warmer pastures is experiencing exponential growth!

Another one...So what if I should happen to ask you how many sheets of drywall you would need to go over 48*27 linear inches horizontally?

Overall, it gives you a vertical and horizontal explanation of real estate investing with multifamily properties. 

All new paint needed, bathroom was disgusting...OH, and as I was editing, I just remembered that the pipe for the bathroom sink had a giant crack horizontally just above the tile.

Signs of water intrusion, shear wall cracks and a horizontal crack on all 4 walls.

These kinds of improvements are also known as horizontal improvements.

@Trenton Miller yeah the horizontal part going under that window was the thing that made me concerned as well.