@Zeng Fan - Check out the following link to the Philadelphia Streets website: http://www.philadelphiastreets.com The Streets department are responsible for "the City's streets and roadways.

If they are not taking care of the property, you can call the inspection department, or city planning, and they will fine the owners for tall grass, condemn the property, etc.

You go though the department of commerce and insurance.  

Although the subject line states that I am a Real Estate Agent from Colorado (which I am), my full time gig is working within the Department of Defense as a Financial Analyst. 

Graphic Artist, web developer, office guru, It department, school bus driver, charter bus driver, print operator, etc...One dead end job after another.

I am a licensed agent in MA, a property owner in MA and have been through the process of getting a deleaded certificate.http://www.mass.gov/eohhs/gov/departments/dph/prog...http://www.mass.gov/eohhs/docs/dph/environmental/lead/all-about-deleading-2015.pdf

house plans that you think will sell.... site plans.. go to planning and building department inquire about submission and fee'ssubmit said plans and off you go.WE used to do public reports in CA... but then law changed if you ( except condo's) if you had public water Sewer and franchise power it was not required.. but if it is .. this was done through the RE commission assume its same there.. go to their website down load what needs to happen.Many jurisdications will require a GC license # on the plan submissions but I suspect you have a builder. 

I've been doing a little research from Department of Real Estate and found this.  

Insurance companies first reaction to a claim is for their legal department to find some obscure clause in their 100 page reservation of rights to deny the claim.  

I bet someone in the asset mgmt department just didn't check to see if the property was vacant.