If you plan to remove the existing building and build a new home you’ll want to talk to your local assessor about how this will affect the current assessment and future assessments.
As background before heading down to city hall here are some things to keep in mind:
Timing for typical real estate assessments -
Assessments are always as of a specific assessment date. The local assessor considers the value of all the taxable properties in the jurisdiction (usually the city or county) as of this “effective date” of value. What happens to the property after that date may or may not affect the assessed value until the next assessment date.
Timing for demolished structures -
For example, if the existing building has an assessment date of January 1, 2016, and you demolish it on August 15, 2016, the local assessor may not reassess the value until January 1, 2017. So consider this if you want to use the existing building for storage or a construction staging area.
Don’t rush to demolish it thinking you will be saving tax dollars until you verify that with the local assessor.
Timing for new construction fully completed by assessment day -
Likewise, as you are building the new structure, the local assessor will estimate value for assessment purposes each assessment date. Continuing our above example, if you demolished the existing building in August and had a new home completed by January 2017, it would have a full assessment reflecting land and the new building.
Timing for partially completed construction for assessment day -
If, however, the new home was still under construction, the assessor would estimate its percentage of completion and the January 1, 2017, assessment would reflect the land and a partial completed building.
Supplemental assessment of partially completed construction -
What may also complicate things (you knew this was coming) is when the local assessor makes supplemental assessments. A supplemental assessment allows the local assessor to reassess completed construction and add it as a “supplement” to the original assessment roll to reflect a completed building when it was only partially complete on the last assessment date.
The supplemental assessment will be prorated so that the assessment for the completed building is only for the period of time when it’s fully completed and the end of the regular assessment year.
Continuing our example, if the new home was only partially completed on January 1, 2017, say 50% complete, the assessment for 2017 would reflect the land and a 50% partially completed building. Let’s say that you then complete the construction on June 30, 2017, and a certificate of occupancy is issued by the local building department that day. The January 1, 2017, assessment that reflects land and a 50% partially complete home would then get a supplemental assessment that reflects that it being complete and ready for occupancy from July 1, 2017, through December 31, 2017.
Valuation methods considered for new construction –
For new residential construction the local assessor can consider the cost approach to value and the sales comparison approach. The cost approach is the closest to what a contractor could build and sell the property for, including a profit.
Assessors use cost services that include local labor and construction materials costs. But the assessor won’t discount this approach because you performed some of the labor yourself (unless the quality of the workmanship is really bad). The assessor is estimating the replacement cost of a typical home, not your exact home.
The assessor may also consider the sales comparison approach, if there are sufficient sales of new homes that are similar to the one you are building. For partially completed construction the local assessor will likely rely on the cost approach and be somewhat conservative. After all, what is the market value (or defined value for your state for assessment purposes) of a partially completed building?
Go talk to the source -
Talk to your local assessor. He or she can answer specific questions about the valuation and taxation of new residential construction in your community. One of the difficulties with real estate assessments is that assessment policies and practices vary by location.
Some local assessors perform supplemental assessments while others do not. Some may have special abatements or exemptions for owner-occupied homes or certain energy saving features like solar panels. Go ask.