[eschaton]

Talking about comprehensive zoning reform, I would simplify the zoning code in the city to be the following:

Single-Family Detached Form: Allows for continued development of detached-single-family homes, but also allows for the construction of multi-units up to fourplex levels as long as they follow the existing neighborhood context in terms of setbacks and building heights.

Single-Family Attached Form: Meant for the traditional rowhouse areas of the city. Allows for the development of new houses, along with multi-units up to six-units so long as they match with the surrounding built context (likely limit of around three stories). No parking minimums.

Mixed-use - Low Density: Allows for any type of residential (including larger apartment buildings), commercial development, and some light industrial uses. Building heights allowed up to six stories. Essentially meant to replace traditional neighborhood commercial districts. No parking minimums.

Mixed-use - Moderate Density:

Similar to the above in uses, but increases height limits up to twelve stories. Meant for transit-intensive corridors. No parking minimums.

Mixed-use - High-Density:

Again, similar to the above, but meant for Pittsburgh's commercial districts (Downtown/Oakland). No height limits. Not only no parking minimums, but parking maximums set up by code.

Residual Industrial:

Essentially the few remaining things which really do not mix well with industrial/commercial uses (dirty industry, tow pounds, scrapyards, etc.).