The Newton Planning Department published a new proposed draft zoning ordinance and, if you care about the environment and want to create more housing choices in Newton, it’s a big step forward. Among other things, the new draft language allows the conversion of most homes in Newton to multiple units. It’s the opposite of a McMansion: same size, more people.

The Planning Department published a memo explaining the changes, which appends some of the new draft language and includes links to other helpful resources.

Some folks who oppose adding more housing and who oppose adding more alternatives to single-family, detached homes have mixed a few of the new concepts, perhaps to generate concern about the new proposal. For instance, here’s language in the latest newsletter from Councilor Marc Laredo (at-large, Ward 7):

Key changes to our zoning code in the Planning Department’s proposal include:

  • Allowing most existing single family houses (all but bungalow or cape-style houses) throughout Newton to be converted “by right” into buildings which can have up to six residential units […].
Emphasis in the original.
 
Councilor Emily Norton (ward councilor, Ward 2) included similar language in her newsletter.
Under the current proposal […], two-family housing would be allowed anywhere in the City, including areas that right now are zoned single family. Existing single family homes could be converted to up to six units “by-right”, which means without a vote from the City Council. […] To be clear, single family homes wouldn’t be banned, but rather a developer would be able to convert an existing home to up to 6 units, or knock down a home and build 2 units “by right.”

Fact: it will not be possible under the new draft language to convert most existing single-family homes into six-unit buildings by right.

Councilor Laredo seems to suggest that, under the proposed multi-unit conversion provision, “houses” can be “converted” into something different (“buildings”) that could have lots and lots of units. Councilor Norton seems to suggest something similar, though, to her credit, she explicitly distinguishes between conversion of an existing home and a teardown.

The actual provision is much more constrained than either councilor suggests. With some modest exceptions, multi-unit conversions would be limited to the envelope of the existing house. Basically, it’s an opportunity to use the inside of house differently, without changing the exterior. And, dimensional requirements — the minimum size of the units you create — limit the number of units per conversion.

This provision won’t allow you or your neighbor to tear down any house and create a 6-unit apartment building. (There’s a separate provision for building new 2-family homes.) For most existing homes, the maximum possible units is two, maybe three. 

The provision works like this. You start with the existing home. It may be possible to add a few hundred sq. ft. of what are called “building components” — mud room, dormer, bump-out. Within that existing space (plus components), you can create multiple units, but each unit created must be at least 1200 sq. ft. (900 sq. ft. if the units meet sustainability or affordability standards). So, just to get to 3 standard units is going to require a house that is already at at least 3,200 sq. ft. (Three sustainable or affordable units probably requires at least 2,500 sq. ft. to start.)

Would it be possible to create a six-unit building from a single-family home? Sure, if the single-family home is at least 5,400 sq. ft. now  and all the new units are either affordable or meet sustainability standards — 7.200 sq. ft. if they are not. But, 5,400 sq. ft. is not “most” homes, even in Newton. Not even close. The average single-family home in Newton has just under 2,500 sq. ft. of livable space.

Hope Councilors Laredo and Norton follow up with clarification.