In a nutshell: Hire the man. You won't be sorry. I wish every tradesman I hired was this good.
We hired Javier Cortes to replace some drywall in our kitchen that had water damage. A couple cabinets had to be removed from the wall, under-cabinet lighting removed, drywall removed, insulation removed, area treated against mold, new insulation installed, new drywall, tape & float, texture, cabinets re-installed and under-cabinet lighting re-installed. The job consumed two and a half days.
Mr. Cortes is very courteous, conscientious and professional. He showed up EXACTLY when he said he would and worked steadily, every day. He delivered EXACTLY what he promised; he's thorough and his craftsmanship is impressive. He brought every tool he needed to the work site. He protected the work area very well (drop cloths, masking tape, contractor's paper) and cleaned up after himself every day, leaving the surrounding area tidy and clean.
The area of wall he repaired is now indistinguishable from the rest, and he re-installed our cabinets so well you'd never guess they were ever taken down. He even re-caulked between the cabinet molding and the ceiling/wall. I'm a detail freak, and sometimes I've hired other tradesmen who had to be followed around and reminded to take care of details, but certainly not this time. Mr. Cortes just does it right the first time, zero prompting required.
He gave us a [very reasonable] ballpark estimate in advance, but we all understood that it wasn't possible to know exactly what would be required until he'd gotten into it. As it happened, the work required was more than originally expected, but the total charges remained very reasonable for the amount of work he did. You can hire Javier Cortes with complete confidence that if the scope of work grows beyond original expectations, he'll handle the situation professionally and treat you fairly.