Teardown McMansions are common but here is a less common scenario: an older home remodeled into what a neighbor claims is a McMansion. Here is the original complaint:

About four weeks ago, this project began with a slow stripping of the original cape on the site. The stripping got all the way down to just the chimney and a few original 2x4s. But in a week — boom! — a giant plywood box erupted as if from nowhere totally around and above the old house’s frame.

Why wasn’t the original modest house just razed? Surely it would have been easier for the builder just to get the old house completely out of the way first. Could there be a builder-friendly municipal regulation that gives special tax treatment to the builder of a “remodel” instead of a “new build?” Are builders being permitted to perpetuate a fiction of remodeling for lower taxes while really building anew for higher profits?

A believer in personal property rights, I don’t begrudge property owners (even speculating builders) to do as they wish on their own land. I accept that McMansions are now an unfortunate fact of Princeton life, even if I don’t like the crass, in-our-face, beggar-the-neighborhood architectural “lifestyle” expressions that some of them egotistically manifest.

As a local taxpayer, however, I (and many others) would have a big problem with any municipal sweetheart arrangements with the builders of these whales, permitting them by some perverse incentive to pay less than their fair share of local taxes on such imaginary “remodels.”

And then a reminder in the comments that people have been adding to houses for a long time:

There is no sweetheart deal going on. Working off of an existing foundation does simplify the permitting process because you are rebuilding or adding on to the “existing” house.

If you tear down the old house including the foundation you start off with a completely new house. This requires a new house permitting process. This may take time and money. Possibly hearings with public input if variances are required.

You might also want to take a tour of Princeton’s old houses. As happens today, houses were expanded and added to as families grew or as the family was able to afford more house. The issue was no different 200 years ago as it is today.

There is also a lot of pressure to preserve open space which restricts any kind of building which then puts pressure on rebuilding in existing areas.

Without knowing more details of this particular situation, it is hard to know whether this is a big remodel or an intention end-run against zoning regulations that make it difficult to build teardown McMansions. Is this a tactic that could be pursued elsewhere? I assume there are also some limits, or at least necessary permits, to remodeling so municipalities could respond by tightening those rules.

Additionally, one marker of a McMansion is a garish facade. If the remodeling is primarily done on the interior or the additions are to the back, this could mean the front still looks like a more traditional older home. The home could still be a McMansion due to its relative size compared to its neighbors but it may not appear from the front to be as much of a McMansion as other homes.