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You could if you built a multistory apartment complex.

Most housing in Somerville, and lots of the urban northeast, is made up of multistory apartments (sometimes referred to as "three deckers")

You can always build higher!

I see, you're using "new houses" to mean new buildings, and "new homes" to mean new units.

Anything over 5 stories gets expensive per sq ft quick.

Even five stories would let you get about double a density we have today. The typical Somerville home is two full stories and half a third story.

If it were legal to build much taller, though, I do think people would be happy to do that next to the subway stations. Yes, the cost goes up, but people are very interested in living right next to the station.

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