Fast, Reliable Lock Installation & Rekey Across Medford
Lock installation and rekeying in Medford typically runs $120-$380 depending on hardware and labor, with most jobs completed same-day by our Lock Installation & Rekey team. We’ve been answering calls from Medford homeowners and landlords for over 42 years, and we know the difference between a quick rekey on a standard Kwikset and a full mortise rebuild on a 1910 triple-decker near Tufts.
Medford sits just northwest of Boston with ZIP codes 02153 and 02155, and our technicians usually arrive within 30-45 minutes of your call. Whether you’re on Boston Ave dealing with stuck student-turnover locks, near Ball Square modernizing after the Green Line Extension, or in a Mystic Valley Parkway condo with a deadbolt that won’t seat, our Medford Residential Locksmith team quotes a flat price on the phone before the truck rolls. Call (877) 664-8139 and a live person picks up, 24/7.
Why Strongbox Lock & Safe Co. Is Medford’s Preferred Lock Installation & Rekey Company
We’ve built our reputation in Medford one job at a time. Landlords on College Ave and Boston Ave call us back year after year because we show ID at the door, wear a uniform, and leave a written 90-Day Done Right Promise on every invoice. No paperwork to file. No arguing if something needs adjustment. We come back and fix it.
Our response time to Medford averages under 40 minutes during business hours and under an hour for overnight emergency calls. We know which triple-deckers have original mortise hardware that needs specialty cylinders, which buildings near Magoun Square got gut-renovated after the 2022 Green Line opening, and where the parking situation slows down service calls. That local knowledge saves you time and money.
We’re also the flat-price alternative to the $19-ad locksmith scam. The price we quote on the phone is the price on the invoice. We’ve seen too many Medford residents, especially seniors who’ve been in their homes for decades, get hit with bait-and-switch bills from out-of-town operators. We don’t work that way. A square deal: the price we quote is the price you pay.
Our Lock Installation & Rekey Services in Medford
Smart Lock Installation
The 2022 Green Line Extension at Ball Square and Magoun Square has sparked a wave of smart-lock retrofits on aging Medford triple-deckers, a neighborhood-specific upgrade surge we haven’t seen at this scale in Somerville or Malden. Landlords who haven’t touched their hardware since the 1970s now want keyless entry for tenants, remote access for property managers, and audit trails for insurance. We install and program Schlage Encode, Yale Assure, and other WiFi-enabled deadbolts, and we make sure they integrate with your existing door prep. Most Medford smart-lock installations run $280-$450 including hardware and labor.

Keypad Lock Installation
Keypad locks are our most requested upgrade in the Ball Square corridor right now. They eliminate rekeying between tenants, which matters when you’re turning over units every August near Tufts. We install Kwikset SmartCode and Schlage keypad deadbolts that stand up to Medford’s freeze-thaw cycles better than bargain brands. A typical keypad retrofit on a triple-decker common door costs $220-$380. We program up to 30 user codes, show you how to add and delete them, and leave written instructions the next landlord can follow.

Biometric Lock Installation
Fingerprint locks aren’t just for Medford Commercial Locksmith spaces anymore. We’ve installed biometric deadbolts on several renovated triple-deckers in the Magoun Square area where landlords want maximum control over common-area access. These units run $340-$520 installed in Medford, depending on whether we need to rebuild the door prep for an older mortise pocket. We recommend biometric hardware for owner-occupied units and small multi-families where you want to eliminate lost-key risk entirely.

Master Key Systems
Shared common-entry doors on Medford triple-deckers are exactly why master-key systems were invented. We set up Schlage and Sargent master-key hierarchies that give you one key for the front door, basement, and utility areas, while each tenant keeps a key that opens only their unit. Last August, we rekeyed a Boston Ave triple-decker whose 1920s mortise lockset had original cylinders that hadn’t been changed since the 1980s, and installed a master-key system so the landlord could access common areas while keeping each student unit private. We also retrofitted the front door with a Schlage keypad lock for the new tenants. A three-level master system for a typical Medford three-decker runs $380-$620.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Medford
We stock cylinders, key blanks, and replacement parts for Medeco, Yale, and Baldwin hardware at our local warehouse, which means most Medford jobs don’t wait for shipping. Medeco high-security cylinders are our go-to for landlords who want pick-resistant, drill-resistant protection in high-turnover student housing near Tufts. Yale residential hardware fits the budget-conscious renovation in the Magoun Square corridor. Baldwin mortise locksets preserve the character of restored triple-deckers while upgrading security. We don’t push what we have on the truck. We install what’s right for your door, your building, and your budget.
Common Lock Installation & Rekey Problems We See in Medford Homes
- Original mortise locksets jam from decades of grime and wear. The triple-deckers on College Ave and Boston Ave often have locksets built between 1890 and 1925 with original or early-replacement cylinders. These require specialty Medeco or vintage-compatible parts that big-box stores don’t stock. We carry them.
- Freeze-thaw cycles in the Mystic River valley warp old-growth wood frames. Medford sits in a valley that amplifies winter temperature swings. Repeated swelling and contraction throws deadbolt throws out of alignment with strike plates, producing a surge of “key won’t turn” calls each late-winter thaw. We realign, we don’t just force the lock.
- Landlords delay rekeying between student turnovers. Every August, we field emergency calls from properties near Tufts where locks haven’t been changed in years and new tenants are moving in tomorrow. We rekey fast, but scheduling ahead beats the rush.
- Green Line renovation exposes outdated hardware. Buildings in Ball Square and Magoun Square that sat untouched for decades now need lock upgrades to match new electrical and HVAC systems. We handle the full retrofit, from mortise rebuild to smart-lock installation.
Pricing for Lock Installation & Rekey in Medford, MA
Here’s what Lock Installation & Rekey in Medford actually costs. These are real ranges for our market, not teaser rates.
| Service | Typical Range in Medford |
|---|---|
| Standard rekey (Kwikset/Schlage deadbolt + knob) | $120-$180 |
| Mortise lock rekey with specialty cylinder | $180-$280 |
| Keypad lock installation | $220-$380 |
| Smart lock installation (WiFi-enabled) | $280-$450 |
| Biometric lock installation | $340-$520 |
| Master key system (3-level, 3-decker) | $380-$620 |
| Emergency lockout / after-hours rekey | $160-$240 |
What moves the needle: mortise hardware that needs custom fitting, doors requiring new prep or strike-plate relocation, and jobs after 8 PM or on holidays. We tell you the full price before we leave for your address. No add-ons, no “service fees” at the door. Seniors and veterans save 5% on every job. Call (877) 664-8139 for a free estimate.
We Also Serve Cities Near Medford
Our technicians regularly cross into Medford from jobs in Somerville, Malden, Everett, and Arlington. If you’re a landlord with buildings in multiple cities, we can coordinate rekeying across your portfolio on the same day. Same flat pricing, same written guarantee, same live person answering the phone.
Serving Medford, MA - Our Local Coverage Area
We’re based in the Medford area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Lock Installation & Rekey in Medford
Yes. We rekey 1920s mortise locksets in Medford triple-deckers regularly, and we stock the specialty cylinders and key blanks that most shops can’t source. Last August, we rekeyed a Boston Ave building with original cylinders unchanged since the 1980s. Call (877) 664-8139 to schedule before the August rush.
Yes, it’s one of the most common late-winter Automotive Locksmith - Medford calls we get. The Mystic River valley amplifies freeze-thaw cycling, which swells and contracts old-growth wood door frames until the deadbolt throw no longer aligns with the strike plate. We realign the hardware without replacing it when possible. Call (877) 664-8139 for a free estimate.
Yes. We’ve installed dozens of keypad locks in the Magoun Square corridor since the 2022 Green Line Extension triggered renovation there. We program user codes, train your property manager, and leave written instructions. A typical multi-unit keypad job in Medford runs $220-$380 per door. Call (877) 664-8139 to walk through your building layout.
We design and install Schlage or Sargent master-key systems that give you one key for common areas while each tenant keeps unit-only access. For a typical Medford three-decker, expect $380-$620 depending on cylinder count and key quantity. We map the hierarchy on-site and deliver all keys cut and labeled. Call (877) 664-8139 to schedule a walkthrough.
Yes. We stock key blanks for vintage mortise cylinders at our local warehouse, including the uncommon profiles found in Medford’s 1890-1925 housing stock. Most duplicates cut while you wait. If your lock uses a restricted or obsolete keyway, we’ll identify it and source the blank if we don’t have it on hand. Call (877) 664-8139 before visiting.
Ready to get your Medford locks sorted? Call (877) 664-8139 now. A live person answers, 24/7. We’ll quote a flat price, send a background-checked technician who shows ID at your door, and back every job with our written 90-Day Done Right Promise. Done right - and backed in writing.
Written by Gil Navarro, Owner at Strongbox Lock & Safe Co., serving Medford and local communities for over 42 years.