Boston's Trusted Local Locksmith — Serving Greater Boston & South Shore Since 2003

ASTRO LOCKS
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    Expert residential & commercial locksmith solutions across Greater Boston

    Need a reliable locksmith in MA? Astro Locksmith provides fast, professional locksmith services for homes and businesses throughout Greater Boston, including Boston, Cambridge, Brookline, Sharon, Newton, Somerville, and surrounding communities. Whether you're locked out, need new locks installed, or want to upgrade your security, our local team is here to help—no stress, no delays.

    door hardware

    Doors Hardware

    We install and repair high-quality door hardware to ensure smooth operation and improved security. From handles and hinges to deadbolts and closers, we handle it all with precision.

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    Commercial Locksmith

    Our commercial locksmith services help protect your business with secure lock systems, master keying, and expert access solutions. We serve offices, retail spaces, and industrial buildings with prompt, professional support.

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    Residential Locksmith

    We keep your home safe with reliable lock changes, rekeying, and installations. Whether you’re moving in or upgrading, our residential services offer peace of mind.

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    Access Control Installation

    Gain full control over who enters your property with modern access control systems. We install keypad, card, and smart access solutions tailored to your needs.

    key duplication services

    Key Duplication

    Need an extra key? We provide fast, accurate key duplication for homes, offices, and vehicles.

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    Security Systems

    Protect your property with integrated security systems including cameras, alarms, and monitoring setups. Our custom solutions are designed for both residential and commercial clients.

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    Emergency Locksmith Services

    Locked out or facing a security emergency? Our rapid-response locksmiths are available to get you back in and restore your safety without delay.

    Why Choose Astro Locks?

    Your Complete Locksmith Solution in Greater Boston

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    Precision Workmanship
    Every lock, handle, and system is installed with expert care — no shortcuts, no guesswork.
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    Responsive Service
    We show up on time, communicate clearly, and get the job done right the first time.
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    Top-Tier Hardware
    We use only high-quality, durable products that ensure long-lasting security and performance.
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    Clean & Respectful

    We treat your property like it’s our own — clean shoes, clean work, and total respect.

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    Insured Pros
    Our experienced technicians are fully insured, and trained to handle any locksmith need.
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    Customer-First Approach
    Your safety and satisfaction come first. We listen, advise, and follow through with dependable results.

    Frequently Asked Questions

    Learn more about our services, service area, and what makes Astro Locks the trusted choice in Sharon.

    • What areas do you serve?

      We serve all of Greater Boston including Boston, Cambridge, Brookline, Sharon, Newton, Somerville, Watertown, Norwood, Canton, and surrounding communities throughout Suffolk, Middlesex, and Norfolk Counties.

    • Do you offer 24/7 emergency locksmith services?

      Yes, Astro Locks provides 24/7 emergency locksmith services throughout Greater Boston. Whether you're locked out at 2 AM or dealing with a security emergency on a weekend, our team is available around the clock, 365 days a year. Call (617) 448-6554 for immediate assistance.

    • How quickly can you respond to an emergency lockout?

      Our average response time is 20-30 minutes for emergency calls throughout Greater Boston. We maintain mobile service vehicles positioned throughout our service area to ensure rapid response when you need us most.

    • How much do locksmith services cost?

      Just give us a call or fill out our contact form — we’ll provide a fast, no-obligation quote tailored to your needs.



    • Are you licensed and insured?

      Yes, Astro Locks is fully licensed, bonded, and insured in Massachusetts. We maintain all required state certifications and comprehensive insurance coverage that protects both our technicians and your property during service calls and installations.

    • Can you rekey my locks or do I need new locks installed?

      In most cases, rekeying is the most cost-effective solution when you need to change who has access to your property. We can rekey most standard locks on the same day, providing new keys while keeping your existing hardware. New lock installation is recommended when upgrading security, when locks are damaged, or when you want smart lock technology.

    • Do you install smart locks and modern security systems?

      Yes, we specialize in smart lock installation and modern security system integration. Our team installs and configures smart locks, keyless entry systems, access control, and security cameras from leading brands. We ensure compatibility with existing home automation platforms for seamless operation.

    • Do you provide commercial locksmith services?

      Absolutely. We provide comprehensive commercial locksmith services including master key systems, access control installation, commercial door hardware, high-security locks, panic bar installation, and complete commercial security solutions. We serve businesses of all sizes from small retail shops to large office buildings throughout Greater Boston.


    • I just moved into a new home. Should I change the locks?

      Yes, we strongly recommend rekeying or replacing locks when you move into a new home. Previous owners, their family members, contractors, real estate agents, and others may have copies of keys. Rekeying ensures you're the only one with access and is typically more affordable than full lock replacement. We can complete most home rekeyings the same day.

    • How long have you been serving the Boston area?

      Astro Locks has been serving Greater Boston since 2003. For over 20 years, we've built our reputation on honest service, quality workmanship, and rapid response times. We're a family-owned and operated business deeply rooted in the local community.

    Astro Locks – Service Area
    Greater Boston & South Shore, MA
    Boston Metro
    South Shore
    Our Bases
    ★ Boston Brookline Cambridge Newton Somerville Watertown Waltham Quincy Medford Milton Belmont Sharon Norwood Dedham Westwood Canton Walpole Stoughton Foxborough Millis Easton Mansfield Wrentham 30+ Cities Across Massachusetts N S W E
    ASTRO LOCKS
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    Hover any pin to see which number to call. Both offices available 24/7.
    Available 24 / 7
    Boston Metro · Brookline
    Greater Boston
    (617) 448-6554
    Boston · Cambridge · Newton · Somerville · Watertown · Waltham + more
    South Shore · Sharon
    South Shore MA
    (617) 359-5625
    Sharon · Norwood · Canton · Walpole · Westwood · Dedham + more
    30+
    Cities Served
    20+
    Years in MA
    24/7
    Emergency
    2
    Local Bases
    Real reviews from people who trust Astro Locks to keep their homes and businesses secure.

    Testimonials

    Reviews

    Moving to Boston? Complete New Home Security Checklist (2026)

    January 25, 2026
    Your new Boston home should feel like a sanctuary, not a security risk. Whether you're closing on a Back Bay brownstone or settling into a triple-decker in Jamaica Plain, taking control of your home security from day one isn't just smart-it's essential. Here's the reality most new Boston homeowners don't think about: by the time you get the keys to your new place, dozens of people may have had access. Previous owners, their family members, real estate agents, contractors, cleaning crews, neighbors with "spare keys"—the list goes on. And in a city where home values average well over $700,000, leaving your security to chance just doesn't make sense. At Astro Locks , we work with new Boston homeowners every single week. We've seen it all-from folks who discovered the hard way that their "new" locks had copies floating around, to smart buyers who locked down their security before they even moved in. This guide walks you through exactly what you need to do to secure your Boston home properly, whether you're a first-time buyer in Somerville or downsizing to a condo in the Seaport.

    Rekeying vs. Changing Locks in Sharon MA: Which One Saves You More Money?

    By Ade Business Solutions • January 25, 2026
    You just bought a house in Sharon. Or maybe a tenant moved out of your rental property. Perhaps you lost track of who has keys to your business on South Main Street. Whatever the situation, you're standing there looking at your locks thinking: "Do I need to replace these entirely, or can I just rekey them?"  It's one of the most common questions we get at Astro Locks, and honestly, it's a smart one to ask. The difference between rekeying and changing locks can mean hundreds of dollars in your pocket—or completely wasted if you choose the wrong option for your situation. Let's break down exactly what each option involves, what it costs in the Sharon area, and most importantly, which one makes sense for your specific situation.

    Smart Lock vs Traditional Lock: Which Is Right for Your Boston Home in 2026?

    December 13, 2025
    There's a moment most Boston homeowners experience at least once: standing in the rain outside your Brookline brownstone, fumbling through your bag for keys while grocery bags cut into your arms. Or maybe you're in Somerville, trying to let a contractor in while you're stuck in downtown traffic. These everyday frustrations have sparked a question we hear constantly at Astro Locks: should I switch to a smart lock, or stick with what's always worked?  The short answer? It depends on your lifestyle, your home, and what keeps you up at night. After installing both types of locks across Greater Boston for over 20 years, we've learned there's no one-size-fits-all solution. Some homes genuinely benefit from smart technology, while others are better off with high-quality traditional locks. Let's walk through what you actually need to know, without the marketing hype or technical jargon.
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    Best Door Locks for Massachusetts Winter: Protect Your Sharon Home from Freezing

    December 13, 2025
    You know that moment when you're standing outside on a freezing January morning, already running late, and your key won't turn in the lock? Yeah, we've all been there. Welcome to winter in Massachusetts, where your door locks face some of the harshest conditions in the country.  Here's what most Sharon homeowners don't realize: not all locks are created equal when it comes to surviving our winters. Some handle the cold like champs, while others might as well wave a white flag the moment temperatures drop below 20 degrees. If you've ever dealt with a frozen lock at 6 AM or struggled with a sticky deadbolt during a snowstorm, you already know how frustrating this can be. The good news? You don't have to put up with it. Let's talk about what actually works when Mother Nature decides to test your door hardware.
    Smart lock and door handle on a black door next to a brick wall. A house is reflected in the door.

    Smart Locks vs. Traditional Locks: What Sharon Homeowners Should Know Before Making the Switch

    November 8, 2025
    When you're standing at your front door juggling grocery bags, a coffee, and trying to fish your keys out of your pocket, you've probably thought: "There has to be a better way." Well, there is. Smart locks have gone from futuristic novelty to practical reality, and more Sharon homeowners are making the switch every year. But here's the thing – not every home needs a smart lock, and not every smart lock is right for every home. If you're trying to figure out whether it's time to upgrade from your traditional deadbolt, this guide will walk you through everything you need to know.

    The Future of Home Security in Boston: Why Smart Locks Need Professional Installation

    October 16, 2025
    How combining traditional locksmith expertise with modern smart technology creates unbeatable home protection