Quick answer: generally yes, unless the will specifically authorizes the sale. Otherwise, the fiduciary petitions the Probate Court, already holding a signed contract of sale, before the decree issues. Run your own numbers in the Connecticut probate real estate sale calculator.
The petition needs a contract already in hand
The court reviews before issuing a decree
At the hearing, the Probate Court reviews the application, the contract of sale, and the fair market value evidence before deciding whether to issue a decree authorizing the sale, mortgage, or conveyance.
Personal property has its own notice rule
Separately, if the fiduciary isn't named in the will as executor or isn't a family member, selling personal property not specifically bequeathed generally requires sending the inventory to interested parties, who then have 5 days to object — though the court may waive this if an expeditious sale is genuinely necessary.
A will's own power of sale changes everything
When the will specifically authorizes the fiduciary to sell the real property, the separate decree process under §45a-164 generally isn't required — the will's own language does the work instead.
A local probate attorney can review your estate — many offer a free consultation.
Hartford, Stamford, and New Haven each handle these petitions through their own probate district, but §45a-164's decree requirement applies identically across all 54 districts.