A Bethesda neighborhood group opposed to the recently approved $230 million expansion of Suburban Hospital is appealing the decision to allow the medical center to destroy homes in increasing its campus.

 The Huntington Terrace Citizens’ Association, whose homeowners live near the hospital, filed a notice of appeal in Montgomery County Circuit Court. The group said they preferred the Suburban-owned houses rather than planned green space, arguing such destruction would destroy their property values.

In the appeal, the group also said that Appeals Board Chairwoman Catherine Titus had a conflict of interest in approving the rezoning because her husband previously served on Suburban’s board of trustees.

Suburban expects to add 66 beds, more medical offices and a new parking garage to the property.