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Comment by hx87 | Hacker News Reader

That's a call for thick walls (including/especially party walls, floors and ceilings) and triple-pane windows, not restrictions on density. Unfortunately, due to the real estate industry's fixation on square footage and granite countertops to the exclusion of any other measure of quality, that's not likely to happen in most places.

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it might be hard due to HOA/condo rules; and if you rent the place than good luck trying to change anything there.

and given the way condos built in the US/canada it's just impossible, i was pretty surprised when i saw a six floors condo built with wooden frame, something like that: https://imgur.com/usO1i9r

The most effective soundproofing is designed in at construction time, it's difficult to impossible to add it in later, unless you're willing to build an entire noise-isolated shell within your walls.

I have a hard time imagining HOA/condo rules working against soundproofing--if anything they'd be thrilled about it if you were willing to put in the money, since it improves the value of the property and community. Yeah, renters are out of luck, but too many landowners are too short-sighted to improve their properties and increase rent to capture the additional value.

BTW, wooden frames can be very soundproof, as long as you pack every wall and ceiling with heavy (i.e. rock wool or cellulose) insulation and ceiling and mount drywall on standoffs instead of directly on studs.

i mentioned it because i have an anecdotical evidence right now - a friend of mine is fighting with his HOA trying to replace windows in his appartments. The only solution he came up by today is to become a part of HOA committee and then change the rules they have. i have another solution in mind - to stay away from HOA in the first place.

i bet they can be soundproof but what i see here is that the builders are trying to cut every corner they can, trying to build as much as possible houses/condos which are sold even before the construction begins (http://www.seattletimes.com/business/home-prices-soar-again-...).

I suspect that they aren't objecting to the sound proofing itself, but an architectural change of using a different style of windows than the rest of the units.

That's my suspicion too--the most airtight and thus soundproof windows are casements, which are common in continental Europe but less so in Anglophone countries where sash windows dominate, and HOAs (as well as historical preservation committees--the bane of energy efficient retrofits everywhere) often take a dim view of replacing the latter with the former.

We live in a flat that is in ~1800 townhouse that was converted to flats about ~1900. Have never heard a single noise from neighbours (external walls are 1m sandstone!). We also have original shutters on most windows which do a lot to overcome the weaknesses of old sash windows.

Once you move in, you can always save up for a year or two, rip out the drywall, put in some insulation and remount the drywall on resilient channels. Windows generally aren't a problem since even the crappiest code-minimum windows are pretty good these days. Floors are a challenge though, unless you can convince downstairs neighbors to put in some insulation or just straight up pay for it yourself.

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