Our brownstone has 3 units (condo'ed) and has a side wall that is exposed, overlooking a neighbor's yard/driveway. The wall was in need of re-pointing, and the building had just come under LPC jurisdiction within the past 1-2 years. I interviewed 3-4 contractors including Asm. He had answers to all our questions, said he had extensive experience with the LPC, and was confident he could compete the job and manage the work, including the fact that the work would be done using the neighbor's yard for staging. We signed a contract with him, including a warranty for work of either 3 or 5 year (I forget which). His contract also included this language: "(Land mark recommendation Removing Mortar From Joints Defective joints must be scraped out by hand , not with electric saws or tools. However, in certain cases, the Commission will consider alternative mortar removal methods (such as diamond-tip or carbide-tip grinders) for horizontal joints in 100-percent re-pointing jobs when the contractors have demonstrated adequate skills with the grinders. Both chisels and grinders require skill and concentration to handle, and special care must be taken not to chip the edges of the stone blocks or bricks or enlarge the original spacing between them” We got permission from the neighbor to use their yard and he started work. His crew used power grinders for a lot of the work. Within a few days of starting the job, our neighbor notified us that there was a vertical crack in the wall, running almost the full height. We hired an engineer to assess the crack and were given instructions on how to integrate metal "staples" in the crack as part of the re-pointing job. the Engineer also notified me that LPC had specific guidelines for power grinder use, and Asm's crew was not adhering to them. They crew was doing vertical cuts in mortar with the grinders (LPC says hand tools only) and his cuts were of uneven and often insufficient depth. He thought there was some cause for concern. But left the matter up to us to decide. He did show me some NYC commercial building guidelines for re-pointing that were clear in the required criteria. I tried to sort this out with Asm, reviewing LPC guidelines and looking at the work to date. He was less than fully agreeable, and said I was misinformed a to LPC rules, and too worried about his work quality. I asked him to tell me where the LPC defined the guidelines as HE understood them (and that were OTHER than what his contract stated (see above). After a week he could no procure such info. He offered a longer warranty (I understood 10 years). He said: why would he do poor work and want to come back? Etc. We reached an agreement that his crew would exercise more care (no cutting into bricks, consistent cut depth) and tried to proceed. Although it took numerous conversations to get to a place where I felt he understood the extra steps involved in the metal staples. Parallel to this process, time-wise, his mortar samples sent to the LPC were rejected numerous times for being the wrong color. This is despite him sending 2-4 samples per round of application. At this point, I was in email contact with the engineer, who said there were companies with premixed mortar colors that the LPC usually accepted. I do not know what this says about the mortar Asm used, or the LPC staff. Take it for what you will. Somewhere in the process of grinding and mortar samples, the neighbor's family (with a child in contracting related field) objected to the safety measures on the site. The scaffolding was not code, the dust collection was not sufficient etc. They insisted on a contract agreement to allow work to move forward. Asm was unable to negotiate this with them, nor was he able to participate substantially in the discussion of terms. There was ill will and distrust between him and neighbor. As an observer, (but not objective) I would say the ill will was at least 1/2 his responsibility. He did not show much of any understanding of how to placate an upset neighbor, how to demonstrate professional responsibility etc. Despite this, we agreed to resume the job, and let Asm know we would be keeping a close eye on work. There was at least 1 time when we agreed upon an on-site meeting with Asm and his site manager, which he postponed with less than 24 hours notice. During a time when relations were rocky. We were left with the impression that he did not value our time. Eventually (august?) the work resumed. Within 1-2 work days, it was clear that the workers were still using power grinders in vertical cuts. We stopped work, and called a meeting with Asm. He had no real reply of substance. We fired him, hired another contractor for about the same fee and the job went fairly smoothly. He received I think $5,000 of a $14,000+ contract