and to file lis pendens against the aforementioned (property) subdivision /
and to record an encumbrance on aforementioned property
in housing authority/public housing corporation. /
and to get title defect/deed restriction on aforementioned housing subdivision in public housing corporation.

ووضع اشارتها على in details: وضع اشارة الدعوى بان العقارعليه مشاكل meaning to record lis penedes against that real property.

المقسم = subdivision / (property) subdivision/in full details : the subdivided land on which the real estate was built./in clear words: housing subdivision

"In United States law, a lis pendens (Latin for 'suit pending' [1] ) is a written notice that a lawsuit has been filed concerning real estate, involving either the title to the property or a claimed ownership interest in it. The notice is usually filed in the county land records office."
https://en.wikipedia.org/wiki/Lis_pendens


"a lis pendens acts as a cloud against the property, effectively preventing the sale or encumbrance of the said property until the litigation is resolved or the lis pendens is expunged. "
https://www.underwood.law/blog/how-can-you-expunge-a-lis-pen...

https://en.wikipedia.org/wiki/Encumbrance

"An encumbrance (sometimes called a title defect or deed restriction) is an umbrella term that describes anything that limits the use or transfer of a property"
https://moneytips.com/what-is-an-encumbrance/

Last but not least وضع اشارة على العقار is to mark the property and that was done at the time of land demarcation with survey markers/property pins and for sure it was before building construction.
https://www.proz.com/kudoz/arabic-to-english/construction-ci...