Established in 1980, AA1 Discount Locksmith serves Cambridge, Boston and surrounding areas. Owner-operator Martin Vieira grew up in Cambridge. It handles emergency lockouts, lock repairs, lock replacements, break-in repairs and rekeying.
Last Updated October 2, 2026.
Cambridge, Boston and surrounding areas.
AA1 Discount Locksmith is one of 5 locksmiths ProsGrade lists in Cambridge, Massachusetts.
11 services listed, including Emergency lockouts, Lock repair and replacement and Break-in repair. Open 24 hours, 7 days a week. Rated 4.7 from 51 reviews.
How AA1 Discount Locksmith compares with the other 4 locksmiths on ProsGrade in Cambridge, using public Google ratings and review counts.
Open 24 hours for emergency lockouts and urgent lock issues.
Customers praise Marty’s professionalism and friendly manner; several also describe him arriving on time or quickly. One customer says he fixed a street-door lock and charged nothing. Another praises his rekeying and key copies for a new condo.
Marty at AA1 was really helpful. Very professional and kind, as well as trustworthy and was available within 24 hours of when I called. I highly recommend AA1 Discount Locksmith.
Marty did a wonderful job rekeying my locks and making me key copies for my new condo. He was on time, friendly, and fast with services. And he did a great job! Would definitely use his services again.
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Most lock repairs and rekeying can be completed in under 30 minutes. A new lock installation on a pre-cut door usually takes approximately an hour.
It uses Schlage, Falcon, Yale, Baldwin, Arrow, Kaba, Lico, Medeco, ASSA and KWIK-SET.
It accepts Mastercard, Visa, American Express and Discover.
AA1 says any door or window can be secured in some way.
