Boston Locksmith FAQ

Yes. Massachusetts General Laws Chapter 147, Section 29A requires all locksmiths operating in the Commonwealth to hold a state-issued locksmith license. This law has been in effect since 2014 and covers all cities and towns in Massachusetts, including Boston, Cambridge, Brookline, and Somerville.

Massachusetts is one of fewer than 20 US states with mandatory locksmith licensing. The requirement is enforced by the Massachusetts Division of Professional Licensure (DPL) under the Executive Office of Consumer Affairs and Business Regulation.

Visit elicensing.mass.gov (the Massachusetts eLicensing Consumer Affairs portal). Search by the locksmith company name or the individual locksmith's name to confirm the license is active, current, and in good standing with the state.

A licensed locksmith in Massachusetts should also willingly provide their license number on request before beginning any work. If a locksmith refuses or cannot provide a license number, do not hire them.

Hiring an unlicensed locksmith in Massachusetts creates several risks. The locksmith is violating state law by operating without a license. If the work causes damage to your property, the unlicensed operator has no licensed accountability and no state-level recourse is available through the DPL complaint process.

Unlicensed locksmiths are also a common profile in Boston locksmith scam operations. They often use a national call center model, dispatch untrained individuals, and charge prices that bear no relation to industry norms.

The Massachusetts state license covers the entire Commonwealth. A locksmith licensed by the Massachusetts DPL can work in Boston, Cambridge, Somerville, Brookline, and all other Massachusetts cities and towns under that single state license. There is no separate Boston city locksmith license requirement beyond the state requirement.

Most Greater Boston locksmith companies service Cambridge, Somerville, Charlestown, Brookline, Newton, Quincy, Malden, Medford, and other surrounding communities. Confirm the specific service area when calling, especially for same-day emergency work. Some companies have minimum call fees that increase for locations farther from their base.

Response times vary significantly by company, neighborhood, and time of day. Boston's narrow streets and heavy traffic (particularly around Fenway, Back Bay, and downtown) can extend arrival times compared to suburban areas. Most licensed Boston locksmiths post typical response windows on their websites. Always ask for an estimated arrival window when booking.

Under Massachusetts tenant rights law, landlords are generally required to change locks between tenants upon request. Tenants who change their own locks are typically required to provide the landlord with a copy of the new key. Check your specific lease agreement before hiring a locksmith to change the locks on a rental unit, and consult the Massachusetts Attorney General's tenant rights resources if you are unsure of your rights.

Smart lock installation in a Boston rental apartment typically requires landlord approval, as the hardware replaces the existing lock mechanism. Review your lease agreement first. Many Boston condo buildings also have HOA rules regarding permitted lock types, particularly in historic buildings with specific architectural requirements. Always confirm before purchasing.

For exterior doors in Boston, a Grade 1 deadbolt (ANSI/BHMA standard) provides the best balance of security and durability for urban use. Grade 1 locks withstand significantly more physical force than Grade 3. Well-regarded options for Boston residential doors include: Schlage B60N or B60NKD, Medeco Maxum, Mul-T-Lock MT5+, and ASSA Abloy. A licensed MA locksmith can assess your specific door prep and recommend compatible options, particularly important for Boston brownstones with non-standard door dimensions.