alt Hacker NewsI read something at some point that it's more expensive to convert these into residential buildings than it is to literally demolish and rebuild.
I'm not entirely sure how that math works out, or why, because one would think it couldn't be that complicated. Maybe someone here knows more about this.
Replies
This is an issue that got brought up in Portland, OR during Covid IIRC. The city was looking at buying up vacant offices and converting them to living space but it just didn't make any sense financially and the city concluded it was cheaper to demolish and rebuild than convert.
>at some point that it's more expensive to convert these into residential buildings than it is to literally demolish and rebuild.
Yep, and that's fine. It's literally a tangible instance of 'creative destruction'. I see people arguing that oh, we have to RTO to save the current model and it seems so backwards to me.
They've figured out some ways to do it (December 2025): https://www.wsj.com/real-estate/commercial/nyc-office-reside...
I assume it's because they would need to re-wire electrical and retrofit plumbing on a massive scale to accommodate kitchens and bathrooms for separate units. They end up needing to gut the entire building and cut through floors and ceilings without damaging any structural and load-bearing parts. It doesn't sound easy nor cheap.
Another thing about a lot of commercial buildings is the floorplate size and layout. Office buildings often don't care if there's a lot of interior spaces without any windows, but people need outside light. So if you've got a massive floorplate it can be kind of a pain chopping it up into good sized units that meet the demand of the residential market in the area. This definitely varies from building to building though.
There's also a lot of work that probably needs to go in to the ventilation and fire code changes. An office building isn't designed for people having ovens and stoves. It also often just assumes its OK to have less isolation between units for the ventilation, or previously entire floors were considered to be one space ventilation-wise but now you might be trying to split it into 2-3 units that require separation. This separation can also complicate things like AC and heat.
The ventilation issue comes up a good bit with a lot of these poorly done conversions. You end up with units that just don't get nearly enough airflow, and all the windows are sealed so its not like one can just open the window to get more air.
The plumbing systems in commercial buildings are not big enough to handle residents usage. Residents use more water and the outbound sewage systems need to be larger.