partial rent abatement due to flood - discounted based on square footage of unusable space in building, but said small square footage contains all bathrooms and kitchen.
TL;DR when calculating partial rent credit due to inability to use a portion of leased property due to flooding, is the fact that water to space was turned off, making bathrooms and sink in kitchenette inoperable relevant to landlords assertion that credit is based solely on square footage of area that was unusable?

4000 sqft industrial bldg, 20% office/80 warehouse. separate lease from the two adjoining Bldg's, I've been in, under same landlord.

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March - Bldg flooded due to downspout malfunction in warehouse area, everything flooded front to back. New Mgmt company hired a "professional" company to dry out everything and make repairs. luckily warehouse inventory was on pallets. Offices were empty but had carpet. "Repair" work has been intermittent for months, despite the fact that they shut off water, removed the base cabinets for both bathrooms and the kitchenette just to be safe (mold=Gold). So for 5 months, the property was without bathrooms or running water. I continued to use the warehouse space for storage as before. The landlord assumes that since I rent the adjacent buildings, and use this one mostly as storage space, my employees and I were not without access to bathrooms (albeit in a bldg not on this lease). I've paid rent throughout and when asked about a break on the rent, they are telling me that the lease only discounts for the portion that is affected, which is about 800 square feet. they are telling me they will credit that amount  for the 5 months it was under repair ( still not completely finished, no running water to kitchenette).

To restate the TLDR, When partial / proportional rent abatement for lack of use due to flood etc. , Is there any circumstance where the equation used to calculate the discount considers the lack of access to water/bathrooms and essentially gives a higher value to said square footage? or is it a matter of square footage is square footage, no matter if it's the bathrooms or access to water? 

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If this were my only bldg, I couldn't have operated with employees having no access to water or bathrooms. 

bit of Back story if you're still awake...  when I leased this third building from the landlord, long time owner, he was supposed to reset all three leases to a new 5 yr lease. As he did when I added the second building years beforehand. Fast forward to June, three months after the flood, I get a letter from the new property management telling me that the owner who I dealt with for almost ten yrs.  is no longer on the board, trustees have hired management and leases are up for the first two and the new rent is going to be substantially increased (30%). I told them the leases were all redone when third bldg was added, not up until 2024. They said they couldn't find anything in the lease, too bad. I called the previous landlord directly and asked him why it wasn't re-set with all three for 5 yrs? he said he remembers he told me he would, he was supposed to, but then covid hit and he guesses he never got around to it. nothing he can do as he was essentially pushed out by younger family trustees / retired, sorry about that. Fully acknowledge my fuck up in not following up with new lease agreement when third building added... Since I'm actually negotiating with someone who's giving me a bend over or move out alternative, I'd like to know if I have a legitimate negotiating point on that calculation based on the law. In not, I suppose I'll be bending over and taking the inflation, like everyone else, and  have to pass it along to my customers... Thank you for any information or guidance you might be able to provide...
[{"id": "ip4z4mf", "text": "If there was a flood inside a tenant space - this is typically a insurance claim not a LL's issue, regardless what was malfunctioning or not inside the space.\n\nUnless the lease has different provisions with respect to insurance - the tenant can cover all the repairs through insurance and not through LL.", "replies": [], "depth": 1}]