San Francisco building inspectors have cleared Supervisor Aaron Peskin of allegations that he illegally combined two units to create a single-family home at his Telegraph Hill residence. The inspection was a response to two formal complaints filed with the department.

The inspection comes a few weeks after self-described pro-housing YIMBY and software entrepreneur Vincent Woo published a story about the history of Peskin’s house at 224 Filbert St. Woo also filed one of the complaints against Peskin.

Woo’s complaint comes as the supervisor is pushing a controversial anti-monster home ordinance that would make it much harder for property owners to knock down part or all of their homes to construct larger buildings. Opponents say that it would make run-of-the-mill home renovations much more costly, time-consuming and, in many cases, illegal.

Woo’s piece — titled: “This is the strange, ridiculous, and criminal story of how Aaron Peskin lives in a monster home that used to be a rent-controlled duplex” — received 1,900 “claps” on blogging site Medium.

In it Woo lays out, among other charges, an accusation that the politician somehow used his political influence and connections to purchase the two-unit building at a discount and then illegally convert it from a two-unit building into a single-family home.

Peskin called the Woo piece “harassment.”

“This is a political attack that has been pitched, hashed through and rehashed over the past 15 years, always at politically opportunistic moments,” said Peskin. “Everything about 224 Filbert is a matter of public record and completely transparent.”

On Wednesday morning, inspectors visited 224 Filbert, the 1,495-square-foot duplex that Peskin bought for $800,000 in 2002 and has lived in for 17 years. The “site inspection revealed two units with kitchens with a communicating staircase. Case closed,” the building inspection states. Even through only Peskin’s household occupies the building, it’s still technically a legal two-unit building.

Peskin said that the timing of the Woo piece was suspicious.

“While I understand that there are significant development interests that do not share my goals of preserving affordable and rent-controlled housing, there is nothing in the record that justifies a single allegation of Mr. Woo’s -- and I will not be intimidated into dropping my legislation to stop speculative demolitions of people's homes," he stated.

Two complaints were filed with DBI, one by Woo and one by San Francisco resident Kyle Destich, who works in investor relations for real estate company Prime Group, according to his LinkedIn profile. Both complaints were found to have no merit.

Woo said he was disappointed in the decision and that “this was an interesting thing for DBI to have concluded.” He added that he “still thinks that what occurred on the property was suspicious.” He also said that it’s is hypocritical for Peskin, who is against unit mergers to be living in two units rather than renting one out and living in the other.

Told that the city had found no code violations, Peskin joked: “That is because I gave a bag of cash to the building inspector.”

J.K. Dineen is a San Francisco Chronicle staff writer. Email: jdineen@sfchronicle.com Twitter: @sfjkdineen