I started paying for architect and city fees for planning and designing in 2018 for room addition to the main unit and a new detached ADU, which started construction and passed final inspection in 2019. Now both, the main unit and ADU are rented out. Lets say the main unit originally costs $105k at 1,500 sq ft, the room addition is $45k at 500 sq ft, total land is $200k, and the ADU is $150k at 1,000 sq ft (I'm guessing on the main unit and land is because I don't know how find out the actual costs). Now I have the following questions for answers/confirmations:
1. Where can I find the accurate cost of my home and the cost of land?
2. How do I account for all costs and fees split between 2018 and 2019 to be depreciated?
Will all costs and fees for room addition be summed up and added to the main unit cost ($45k + $105k) for 2019 tax year for the start of depreciation? and a separated "property" line for all costs for ADU ($150k) starts depreciation for 2019?
3. Will property tax splits be 1/3 (for ADU, 1,000 sq ft of 3,000 total sq ft) and 2/3 for main unit with room addition?
4. I now pay for 2 different equity loans that funded the costs for room addition and ADU, and mortgage on the original main unit, how should I account for and split up the interest paid to report as expenses?
