Gallery Launch Gallery Getty/Jonathan Quinones – LA REP

Diane Keaton 's incredible life also included a whole other career as a home renovator ... and her most personal project is now on the market listed for $26,900,000, TMZ has learned.

Diane's longtime friend Andrew Gulyas holds the listing nicknamed "The House That Pinterest Built." Jonathan Quinones – LA REP

The sprawling 9,219-square-foot estate took 14 years to complete, according to the New York Post , and was reportedly inspired by her childhood love of "The Three Little Pigs" -- an inspiration perhaps most notably evidenced by the 75,000 hand-selected 18th-century bricks purchased in Chicago, which form the foundation.

With 5 bedrooms and 8 baths, this architectural masterpiece is nestled in the L.A. enclave of

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