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Heavy machinery takes down a shed on Sampson Avenue on Monday as a developer begins work on a renovation and expansion of an old house. The shed was deemed not to be historic, allowing the demolition. Jay Hamburger/Park Record

A developer in a tucked-away Old Town location on Monday demolished a shed as part of what will be a major renovation and expansion of a historic house.

The property is on Sampson Avenue, a tiny street toward the southern end of the neighborhood. City Hall had determined the shed that was razed was not historic, saying that it was not listed on a 2008 municipal inventory of historic sites and did not appear on historic tax records.

According to Anya Grahn, the historic preservation planner at City Hall, a small house next to where the shed stood is historic, dating to 1900. The developer won an overall approval for the project in 2007.

The historic house, measuring approximately 600 square feet, will be disassembled in a process known as panelization. Once it is disassembled, a new foundation will be put down and an addition will be built on the back. Two of the historic walls will then be reattached.

The completed house is expected to measure approximately 4,300 or 4,400 square feet. The figure includes the original approximately 600 square feet.

The developer, meanwhile, will build a retaining wall at the site along Sampson Avenue in an effort to protect the street.

Panelization has been practiced in Old Town for years, as Park City leaders required owners of historic houses to preserve in some fashion the look of the old structure as part of a new development. A panelization also allows a developer to add a foundation to a building that did not have one. Leaders see panelizations as being greatly preferred to demolitions.

The developer's representative, Jerry Fiat, said the front wall and one side wall from the historic house will be incorporated into the project. He said the foundation work is anticipated to start in a few weeks. He would like the project completed in the fall of 2014 or early that winter.

He said City Hall was careful in the approval process and interested parties were notified of the work.

"We met with planning, preservation, building, legal, engineering . . . to review the project," Fiat said about the discussions with Park City officials.