Balboa Guitars is the San Francisco workshop of Mark Newstetter, a skilled luthier who brings decades of guitar expertise to every repair that crosses his bench. Located on Balboa Street, the shop specializes in high-quality instrument repair for both acoustic and electric guitars at reasonable prices.

Newstetter’s background as a working guitarist, composer, and teacher gives him unique insight into what players need from their instruments. This hands-on understanding informs his approach to guitar setup, fretwork, and comprehensive repairs. Beyond standard maintenance and fixes, Balboa Guitars also offers custom and boutique guitar builds for players seeking something truly personalized.

The shop maintains a commitment to quality craftsmanship without the inflated pricing often found at larger repair facilities. As both a guitar tech and performing musician, Newstetter understands the importance of quick turnarounds and clear communication. Players throughout the Bay Area trust Balboa Guitars for everything from basic setups to complex structural repairs, knowing their instruments are in the hands of someone who genuinely understands the relationship between a musician and their guitar.