I have a duplex with a flat roof - Tar and gravel - I'm looking to have it replaced before next winter and have had one contractor say that he could drill insulation board right on top of the existing roof and cover that with the EPDM membrane. 

if you are experiencing pooling I would have a core sample done around that area because you could have rotting below the membrane and that could lead to other issues down the line.

Construction it’s self is relatively straight forward as this would be a floating deck on top of the waterproof membrane.

I also had to replace a membrane switch on  a stove for an existing tenant.1- renovation: There are a number of loopholes in the executive order and one allows you to continue working if you have a contract or lease with availability date.

However, the landlord, who isn’t identified by name in the ruling, should have denied the dog request because Cohen lived there first and the dog posed a direct threat to her health.The court concluded that Cohen, who suffered allergic attacks, was entitled to her claims of breach of lease and breach of the “covenant of quiet enjoyment.”The ruling shows Cohen has a “medically documented severe allergy” to pet dander that causes nasal congestion, swollen sinuses and excess coughing.

If the patio roof is concrete on (on the left in the pic, hard to see/tell)  you could put a membrane roof down, like tpo or pvc.

Metal or membrane type?

I am closing on a property soon and it has a rolled membrane roof.

It's time to re-roof one of our MF buildings and I don't have any experience dealing with flat roofs with torch-on membranes. 

It also mentioned installing a sump pump and waterproofing membrane on 3 sides.Clearly there was more mentioned in the recent estimate than the original.