Mailbox Lock Replacement & Installation

Upfront pricing

24/7 Assistance

Licensed & Insured

Greater Boston Area, MA

Residential Locksmith Services

Emergency Residential Assitance

Residential Lock Repair & New Lock Installation

12 Month Warranty

Choose your option:

CALL NOW IF YOU'RE IN MASSACHUSETTS:

(617) 272-7007

Upfront pricing

24/7 Assistance

Licensed & Insured

Greater Boston Area, MA

Residential Locksmith Services

Emergency Residential Assitance

Residential Lock Repair & New Lock Installation

12 Month Warranty

About SherlockLock Residential Locksmith Services

In depth guide to our services:

Lock Repairs
We prioritize repairing locks over replacing them whenever possible, as it’s more cost-effective and resourceful. However, some locks are beyond repair or of low quality and need replacement. Our service vans are stocked with replacement parts and a variety of locks. Many issues can be diagnosed and priced over the phone based on your description.

Old Locks & Mortise Locks
Older homes in the Boston area often have vintage lock hardware that may need servicing or replacement. Mortise locks, commonly found in high-end properties, are durable and decorative. We recommend restoring these by cleaning and repairing internal components. If replacement is necessary, we offer two options:

1. Replace with a new mortise lock for quality and aesthetic value.
2. Retrofit the door for a modern, durable lock, often a cost-effective choice.

Modern Locks
We carry only A grade locks for durability and can recommend decorative options to suit your style, provide warranty on our job.

Surface-Mounted Locks
These older locks, operated by rim cylinders, often suffer from alignment issues or wear. When needed, we replace them with high-quality alternatives.

Lock Rekeying
Rekeying changes a lock's internal components to prevent old keys from working. It’s a cost-effective solution that requires specialized skill and parts.

Lockout Services
We provide quick and efficient lockout assistance for homes, cars, safes, mailboxes, and more. Most locks can be picked or bypassed without damage. If replacement is necessary, we ensure it matches your existing key whenever possible.

Master Key Systems
A master key system allows one key to operate all locks, with sub-keys providing restricted access. Ideal for landlords and property managers, this setup ensures convenience and security.

Deadbolt & Lock Installation
Installing a deadbolt enhances home security. We also install strike plates for added protection and can fit various other locks, including jimmy-proof deadbolts, chain locks, and peep holes.

High-Security Locks & Restricted Keys
High-security locks are resistant to picking, drilling, and tampering. Restricted keys can only be copied with authorization, offering better control over access—ideal for landlords and businesses.

Mailbox Lock Replacement & Installation by SherlockLock

Secure Your Mail with Reliable Lock Solutions – Serving Homes and Multi-Unit Buildings Across Greater Boston

Your mailbox is more than just a place for letters - it’s a potential entry point for sensitive personal information. Whether you've lost your keys, moved into a new property, or your lock has simply worn out, SherlockLock provides fast, secure, and affordable mailbox lock replacement and installation services throughout the Boston area.

When to Replace Your Mailbox Lock

You may need a new mailbox lock if:

You’ve recently moved into a new apartment, condo, or home
You've lost your mailbox key
Your mailbox lock is jammed, broken, or rusted
You’ve experienced mail theft or tampering
You’re a landlord rekeying between tenants

Our team can replace mailbox locks on wall-mounted, curbside, or USPS-approved cluster boxes (CBUs), with service available the same day in most cases.

Types of Mailbox Locks We Service

🔐 Individual Residential Mailboxes
Standard wall-mounted or post-mounted mailboxes found on single-family homes. We install secure cam locks or barrel locks to fit your existing setup.

🏢 Apartment/Condo Mailbox Banks (CBU or 4C Units)
We work with property managers and HOAs to replace or rekey tenant mailbox locks in USPS-compliant mailbox units. Bulk pricing available for multi-unit upgrades.

📬 USPS-Compliant Locks
We carry USPS-approved mailbox lock models and know how to install them correctly while meeting postal regulations. We’ll also coordinate with postal access if needed.

🔑 Lost Mailbox Key Replacement
If you’ve lost your mailbox key, we can pick and replace the lock on-site, ensuring only your new key works moving forward.

What’s Included in Our Mailbox Lock Services:

Lock removal and replacement
Lock picking (if key is lost or broken)
Rekeying when lock model allows
Matching new lock to your key (if requested and compatible)
New keys (typically 2 included)
Optional upgrade to tamper-resistant or restricted key models

Why Choose SherlockLock?

🛠️ Certified locksmiths with experience in residential and multi-unit mail systems
🧰 Fully stocked mobile service vans for on-site lock changes
🔐 Only high-quality, USPS-compliant hardware
💬 Fast, courteous, and discreet service
📍 Local and trusted throughout Greater Boston

Keep Your Mail Private. Keep Your Box Secure.

Whether you're a homeowner, renter, or property manager, SherlockLock provides prompt and professional mailbox lock solutions you can count on. We’ll restore access and secure your box - often in under 30 minutes.

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