Cost basis on bundled property

[romeo20808]

Stuck on figuring out cost basis. I purchased a home 2 years ago and as part of the purchase it came with a separate lot and garage across the street. I ended up selling the garage and lot last year and I am trying to figure out how to calculate the cost basis on that sale. Can't seem to find any info on how to clarify that. The total purchase price of both my main home and the extra lot was $50k and I sold the extra lot for $22k if that helps

[Mike9241]

the best source would be a realtor which could give you relative values of the property on the date you bought them.