Putting up a wall - permit required?

Yes.

requires a permit, and an architect to draw up the plans.

To add a little detail to the question, even though I expect the answer to be yes...To transform a Junior 4 into a 2 bedroom, are a permit and plans required?

it depends of the building, and what kind of wall would it be?

By law all improvements must be approved by DOB. There is a long standing law that is now being enforced again by management companies and leasing offices. Typically without a approval you are only allowed to install a "book shelf wall" which stops 12 inches from the ceilings and does not attach to both walls. Only one. These dividers can be found at roomdividers.com

What if we put in room dividers or wall slide doors from the Sliding Door Company or similar establishment? Do we still need a permit and an architect? I should add that we would be putting back a wall and door that were removed many years ago. Does that change anything? Thanks.

Fatrabbit,

I have had clients that used Sliding door co to but up a wall and we did not need to get permit, however that does not mean your building will do the same

Don't people put in temporary walls all the time, permit-free???

"Don't people put in temporary walls all the time, permit-free???"

Yes.

People also smoke crack and do Ecstasy, penalty-free.

Doesn't mean they won't eventually get caught.

Fatrabbit, Are you in a rental/ co-op or a condo? To be safe and avoid a fine I would just reach out to your management company directly. 99% of rental buildings in Manhattan no longer allow "full temporary pressurized walls" There was a fire in the Bronx about 2 years ago that killed a couple fire fighters and after which the city started cracking down the temp walls. Hope that helps

Thanks, bsolomon. It's a condo and we're trying to figure out what we can afford to do and what we can't so if putting up a wall is too expensive, we won't do it. In order to get the permit, we'll need to hire an architect to draw up the plans. Any suggestions on a reasonably priced architect who would be interested in such a small, straightforward job?