The Roswell Spencer House is a historic property located in Pleasant Valley, Iowa, United States.

After he served in the Black Hawk War he relocated to the newly opened lands of eastern Iowa.

He became the first white settler in what would become Pleasant Valley Township when he built a log cabin near the mouth of Spencer Creek in 1833.

He served as the local postmaster and continued to live in Pleasant Valley until 1862 when he moved to Cedar County, Iowa where he was once again engaged in farming.

The exterior also featured pilastered corner boards, projecting boxed cornices and a plain frieze on the gable ends where double hung windows were located.