| House at 663 La Paz Street | |
| Location: | 663 La Paz Street San Juan, Puerto Rico |
| Built: | 1935 |
| Architect: | Pedro Adolfo de Castro |
| Architecture: | Mission Revival |
| Added: | October 18, 1991 |
| Refnum: | 91001500 |
| Designated Other1 Name: | Puerto Rico Historic Sites and Zones |
| Designated Other1 Color: |
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| Designated Other1 Num Position: | bottom |
| Designated Other1 Number: | 2000-(RMSJ)-00-JP-SH |
| Designated Other1 Abbr: | RNSZH |
| Designated Other1 Date: | February 3, 2000 |
663 La Paz is a historic Mission Revival house designed by famed Puerto Rican architect Pedro Adolfo de Castro located in Miramar, a historic residential area of Santurce in the city of San Juan, Puerto Rico.[1] The house is one of various private residences in Miramar designed by Pedro Adolfo de Castro that, along with structures such as Castillo Serrallés, were instrumental in ushering the Mission Revival architectural style in Puerto Rico. It was built in 1935, a year before the death of de Castro.[2]