loadedlongboard
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This is a follow-up question to a thread that is now closed...here is the link: https://appraisersforum.com/forums/threads/montgomery-county-split-levels-and-GLA.217770/
Hi all, I am new to Maryland / East Coast, and am trying to understand the nuances of homes with basements and how it affects the taxable living area. I've spent some time trying to define several rules that would apply to a majority of the homes listed, but it seems either there is no defined way in which the assessor calculates the GLA or the Building / Style codes used are incorrect.
I'm trying to use the Tax Records' "Building Use" code along with the "Structure Description" / "Model Type" fields to calculate what the Total Square Feet of the property should be, and whether the "living area" already includes the Basement SF:
Searching the Assessor database, I've found hundreds and hundreds of properties with the Building Use code stating "No Basement", yet the Structure Description still lists SF for the basement, as seen for Property B below.

Property B is listed at 2,241 Tax SF, with a Basement of 621 SF. However the Building Use Code is "2 Story No Basement".
QUESTIONS:

Thank you for any insights you can provide. Much appreciated.
Hi all, I am new to Maryland / East Coast, and am trying to understand the nuances of homes with basements and how it affects the taxable living area. I've spent some time trying to define several rules that would apply to a majority of the homes listed, but it seems either there is no defined way in which the assessor calculates the GLA or the Building / Style codes used are incorrect.
I'm trying to use the Tax Records' "Building Use" code along with the "Structure Description" / "Model Type" fields to calculate what the Total Square Feet of the property should be, and whether the "living area" already includes the Basement SF:
Searching the Assessor database, I've found hundreds and hundreds of properties with the Building Use code stating "No Basement", yet the Structure Description still lists SF for the basement, as seen for Property B below.

Property B is listed at 2,241 Tax SF, with a Basement of 621 SF. However the Building Use Code is "2 Story No Basement".
QUESTIONS:
- Since Property B is classified as without a basement, BUT still has basement SF listed in the Structure Sections, could this mean the assessor decided that the basement qualified as above-grade living area...and as such the 621 SF Basement is already included in the 2,241 living area number?
- What would you say the total SF of the property is, including both above & below grade areas? Would you include the 621 SF Basement even though the Building Use lists "No Basement"?
- To search for like-properties for comparables, my plan was to filter by "Building Use" and "Model Type" (standard, split-level, split foyer) to try to find the most structurally similar properties:
- However if Property B does in fact have an additional 621 SF Basement, then it would not be comparable to other 2 Story No Basement Building Use coded properties?
- Am I better off only filtering by "Model Type" (Standard, Split-Level, & Split Foyer) and ignoring the # of stories? How would you treat the "no basement" properties showing SF under the basement section?
- If the tax record shows basement SF, would you override the "Building Use" code?
- Another Example is: 3018 Chapel View Dr, Beltsville, MD 20705. Shows "No Basement", however clearly there is a basement at this property...

Thank you for any insights you can provide. Much appreciated.
