Yes, a Singaporean wife with no children and a husband on a Long Term Visit Pass (LTD pass) can buy a resale HDB flat. This falls under the "Non-resident spouse" category. The Singaporean spouse must be at least 21 years old, and the non-citizen spouse must have a valid Long Term Visit Pass or Work Pass of at least 6 months from the date of issue at the point of your HFE letter and resale flat application.
