You are on the right track!
The math will be $58K + improvements from 1980 until 1989. Please disregard depreciation because I assume you used the house for personal use only, not business use.
The following link will provide you with more information on figuring out your basis. <a rel="nofollow" target="_blank" href="
https://ttlc.intuit.com/questions/3147446">https://ttlc.intuit.com/questions/3147446</a>
If you have more specific questions, please post separate questions on the forum so we can track and address them properly.
