Calculating the share of property taxes for a unit in the building?
How is property tax typically calculated for a given unit, an office space in a commercial building? Here's an example: 50 California St, San Francisco, CA - Commercial Office Bldg. Class A property.

The market value is: **$216,164,970**

Tax rate is: 1.1% or **$2,590,521**

Total sq. footage: **663,487 sq ft**

Lot Area sq.ft: **39,901 sq ft**

Now for each tenant that occupies the space or a unit, and depending on the lease type, how much is the property tax for a unit i.e **5000 sq ft**.? Is it calculated as tax per total sq.ft  x unit size?
[{"id": "h1h5fd8", "text": "It\u2019s calculated by whatever the lease says.", "replies": [{"id": "h1h73hi", "text": "Yeah, but is there a standard or a range that one can expect to pay? How would you typically calculate them?", "replies": [], "depth": 2}], "depth": 1}, {"id": "h1h7ayy", "text": "Typically it will be off the pro-rata share of the space. In this case it would be 5,000/663,487 = .7536% take that multiply by the tax rate, ends up being about $1,626.85 a month or $19,522.17 a year. In Cali y\u2019all do shit weird and go price per month/sf so that\u2019s $0.325/sf/month.", "replies": [{"id": "h1h84w0", "text": "Thank you.", "replies": [], "depth": 2}], "depth": 1}, {"id": "h1iy1r2", "text": "It depends on how the spaces are measured as per the lease, ie BOMA calculations are quite complex and rules have changed over the years, but only if the lease says it is using BOMA.\n\nIt should be pro rata based on the LEASEABLE area of the building and the LEASEABLE area assigned to each tenancy in most cases.\n\nFor example, if if one tenant occupied an entire floorplate, it is quite simple to measure 'outside of all walls'. If another floor has 5 tenants, they will gross up the common space from that floor to each tenant based on usable space from each tenancy, minus the vertical penetrations of the elevator shafts and stairwells. If there is a shared fitness room or other amenity, that all or some tenants have access to in their lease, a portion of that room is assigned. \n\nAll of the space in the building gets assigned to tenants except the vacant leaseable space (space available for rent). The rules under BOMA are there to add standardization but I don't believe there is any legal requirement to follow those unless specified in the lease.", "replies": [], "depth": 1}, {"id": "h1j83it", "text": "The taxes are based on the assessed value.  The market value is only important if there is a change in ownership.", "replies": [], "depth": 1}, {"id": "h1kiuvn", "text": "It\u2019s quite easy, 100% of taxes for 100% sq.footage used, 20% used, 20% taxes paid. $10,000 tax bill, $2,000, Passthrough to the tenant.", "replies": [], "depth": 1}]