Boston's Most Trusted Locksmith Services

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.

retail stores locksmith services

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.

residentail locksmith services

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.

fingerprint lock

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.

Modern interior with pool table and sliding glass doors opening to a balcony with city view.

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.

wood door repaired

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.

Get a Free Quote

Contact Us

Why Choose Astro Locks?

Your Complete Locksmith Solution in Greater Boston

A person pushing a gear uphill, representing effort and progress.
Precision Workmanship
Every lock, handle, and system is installed with expert care — no shortcuts, no guesswork.
Black and white WeChat logo; two overlapping chat bubbles with small white dots.
Responsive Service
We show up on time, communicate clearly, and get the job done right the first time.
Two black keys on a ring.
Top-Tier Hardware
We use only high-quality, durable products that ensure long-lasting security and performance.
Hand holding up a thumbs-up with a heart above it, symbolizing support or approval.
Clean & Respectful

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

Black and white badge icon with a star and ribbon for best locksmith company
Insured Pros
Our experienced technicians are fully insured, and trained to handle any locksmith need.
locksmith reviews icon
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.

Real reviews from people who trust Astro Locks to keep their homes and businesses secure.

Testimonials

  • testemonial from a happy customer in sharon ma

    Locked myself out right before a meeting—Astro Locks arrived in 20 minutes and got me back in fast. Super professional!

    Write your caption here
    Emily R., Sharon, MA

  • We used Astro for a full lock upgrade at our office. Great communication, clean work, and quality hardware. Highly recommend.

    Write your caption here
    David S., Canton, MA

  • I’ve never had a locksmith take so much care with the little details. You can really tell they care about doing the job right.

    Write your caption here
    Lisa M., Stoughton, MA

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.

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 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 Hidden Costs of Delaying Lock and Security Upgrades: What Sharon Homeowners and Business Owners Need to Know

October 13, 2025
We get it. When your locks are "working well enough," upgrading your security system often falls to the bottom of your to-do list. Between mortgage payments, business expenses, and everyday life, spending money on new locks or access control systems can feel like an unnecessary luxury - especially when what you have still turns.
Astro Locks technician showing a Sharon family how to use a new smart lock keypad on their front doo

Why Sharon Homeowners Are Switching to Smart Locks in 2025

September 30, 2025
Discover why more Sharon homeowners are upgrading to smart locks in 2025. Learn how Astro Locks helps families enjoy security, convenience, and peace of mind.