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MADISON, Wis. (WMTV) – New documents obtained by NBC15 Investigates provide more details about the ongoing construction project at the site of the duplex explosion in Oregon, including the companies that were carrying out work at the site .

Damage to homes and surrounding areas after an explosion in Oregon is estimated at $1.5 million to $2 million, an Oregon Area Fire/EMS update said Monday. The agency noted that two buildings primarily affected are considered a total loss.

Residents of a structure who were displaced due to the blast were able to recover some of their personal belongings, the fire department said.

No injuries were reported after a house under construction exploded on Friday. It completely destroyed the structure and damaged two nearby houses. Contractors and sub-contractors told emergency crews that no one was working at the house under construction.

NBC15 Investigates filed an open records request hours after Oregon Fire Chief Glenn Linzmeier said preliminary reports showed there was gas in the building at the time of the explosion. The 39-page report lists things like plumbing, electrical, and HVAC contractors, as well as the company that owns the property.

NBC15 Investigates is reaching out to these companies, and until we get a response, we won’t name them.

According to the permit, the 6,982 square foot duplex was brand new, not a renovation. It was to be a two-story, two-family house with attached garages and a porch. It shows that the plumbing tests were completed in July and a foundation survey was carried out in May. According to the permit application, the duplex was to have a forced air furnace and central air conditioning and use municipal sewers.

The estimated cost of the project was $411,800. The property was appraised at $52,000 per lot. The home’s address places it in the Oregon School District.

The building permit was filed by the building contractor, submitted to the village of Oregon.

There were two dogs that were able to escape on the day of the explosion, and a missing cat was also able to be reunited with its owners.

Oregon firefighters called additional agencies the day of the blast to help, with 16 area fire departments and four EMS agencies responding. The Oregon Police Department, Public Works Department and Alliant Energy also provided assistance.

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