where to put Exterior Items when building is being Painted

This is a Large Full City Block Building with over 400 units. Most units have Balconies, and 20 units have oversized patios. 10'x20'
We have ask all residents to remove items from from balconies and patios to put up scaffolding, repair and paint exterior. The exterior work could take a full year. The 20 large units are up in arms over where to put all their outdoor furniture.

We have said the cost is on homeown, however, the owns say to pay for storage is more than the furniture cost and to have to give it away or sell it dirt cheap on craigslist is wrong and they'll sue.
Does anyone have any insight on this?

I agree.

With Tim & John, ignore the owners with too much stuff to put in their units. That isn't the HOA's problem. It's similar to having to termite a big property. How owners deal with their own plants, pets, lodging & food is on them.

Several of them might want to consider joining together to rent a storage locker.

Residents have their own storage lockers, right?

It doesn't matter that some Owners have too many personal possessions to store in their units during the work. The only relief for them that MIGHT exist is if your construction defect litigation settlement includes relocation of residents' possessions during the reconstruction to cure the defects.

Also consider that you have an annual operations budget and annual contributions to reserves that are contributed by all Owners' dues. Both generally cover only common area expenses. The board/Association generally is responsible only for the common areas. Why should all owners (the Association) pay for the storage of these few residents' personal possessions?

As I wrote above, it's the same thing as if the building must be tented for termites: residents are on their own. Here is one relevant Calif. Civ. Code.
Davis-stirling.com: Civil Code §4775. "HOA and Owner Maintenance Responsibilities. ... (b) The costs of temporary relocation during the repair and maintenance of the areas within the responsibility of the association shall be borne by the owner of the separate interest affected."

In our urban neighborhood, all condo high rise units have their own storage lockers, so I guess we're different than your area, Elin.

Say, Elin, have you read the contract with the vendor who'll do the work? Does it really say the entire structure will be covered with scaffolding for a year? I just cannot see why that's necessary. It did take a year to do our twin towers and there also was a lot of spalling and corrective work done on the concrete structures, but based on my own experience and that of the buildings I see all around me, being covered a by scaffolding for a year seems really unusual & strange.

Hardly any posters here are from high rises, so you won't get much more, I don't think.