Boulder looks to limit McMansions

The Boulder, Colorado city council recently discussed how to limit large houses and teardown McMansions:

Members were mostly in agreement with a goal of discouraging larger homes, including allowing landowners to subdivide large lots and build second, third or fourth housing structures — provided the new homes were permanently affordable. All members save one felt that encouraging subdivision in Boulder’s lowest-density districts was a good idea: Mirabai Nagle was the lone voice of dissent…

The surfeit of scrape-and-replace builds has already transformed the once-rural neighborhoods, councilwoman Lisa Morzel said in a rebuttal of Nagle’s position, with huge homes that take up every allowable inch of space.

“What was once very rural and very lovely and very open, it’s gone,” Morzel said. “With these giant fences, you can’t have the foxes, the deer, the mountain lions. You’re creating an impermeable” compound.”

Nagle was in favor of pursuing regulations to discourage larger homes, as were most other members. Councilman Bob Yates said he would need “a ton of data or a ton of discussion” before he took a firm position.

Many communities have made similar plans in recent decades. The Boulder leader will not have definite guidelines for a while and the devil might always be in the details of what exactly they allow and rule out.

1. What is the maximum size for new homes? This may seem like the obvious place to start but homes can be built in different ways that either emphasize or hide their large square footage.

2. How should the home sit on the lot? Similarly, a smaller house could appear problematic if it is really close to lot lines.

3. What architecture and design should the home feature? Some communities ask that new homes attempt to fit into the existing neighborhood design. Others might suggest that leading with a large garage in the front is a negative feature.

4. Related to the architecture and design is a question of how the new home should compare to nearby homes in height and width. A new home that is significantly taller can block light. A wider home could break up the streetscape.

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