Brooklyn Property - Mason/Concrete Contractor Referral

[Robyn Henderson]

For people in the Brooklyn area, do you have any cement/concrete professional that you'd recommend? My tenant informed me that a staircase and surrounding backyard porch is in bad shape and I'm looking for someone to come by and quote the job. The property is located in Cobble Hill/Carroll Gardens area. 

If you know of any facebook group or other sites where people might share recommendations, let me know!