Can I claim DIY labor on capital improvement towards primary home's cost basis

[Oscar Kramer]

I plan on adding a paved patio to our home, which would count as a capital improvement. Estimates hover around $30K. I priced the materials at around $5K. If I do the work myself, can I somehow claim $30K when it comes time to sell the house? How would I document that? Can I refer to the estimates as the cost basis for the work?