As a piano technician, I can take care of any in-home repair such as sticking-keys, action-regulation, broken-parts, etc.
One advantage of this business is the opportunity to choose between in-home piano tuning services and repair, or workshop rebuilding of pianos. Rather than shutting myself away in a piano repair shop, I have focused on creating satisfied customers in their homes.
When having a problem with sticking keys, it is a good idea to write down exactly which key is problematic.
The simplest way to record which key is sticking is to start numbering the “C’s” starting from the lowest: C1, C2, C3… etc…
The lowest note on the piano is A0 whereas the highest key is C8. The keys above highlighted in yellow are D#1, G2, A#3, B5 & F#7. Piano tuners refer to all black keys as "sharps" never "flats."
I hope your piano does not require extensive rebuilding repair. However, if your instrument needs such repairs, I can offer advice about the best approach and help avoid pitfalls.