Fast, Reliable Lock Installation & Rekey Across Four Corners
Lock installation and rekeying in Four Corners, MD typically runs $120-$380 depending on hardware and labor, with most jobs completed same-day. Our Lock Installation & Rekey team knows the 20901 ZIP well - from the brick Cape Cods off Colesville Road to the garden-apartment complexes lining University Boulevard. We’ve been driving these streets for over 42 years, and we understand that a lock issue in Four Corners isn’t just about the cylinder; it’s about whether your 1960s Sargent hardware can even accept modern pins. Call (844) 314-7347 and we’ll quote a flat price before the truck rolls.
Why Strongbox Lock & Safe Co. of Washington DC Is Four Corners’s Preferred Lock Installation & Rekey Company
We’ve built our reputation in Four Corners one job at a time. Landlords along University Boulevard know our technicians by name because we show up when we say we will, uniformed and ID-ready, to cycle locks between tenants under Montgomery County’s rental code.
Our response time to Four Corners averages under 45 minutes during business hours. We’re coming from our Washington DC base up US-29, a route our drivers could run blindfolded. That matters when you’re standing outside a rental unit with a new tenant scheduled to move in tomorrow.
Four Corners homeowners trust us because we tell the truth about their hardware. When we encounter an obsolete Corbin keyway that can’t be rekeyed, we say so upfront. Then we quote the full replacement - a Schlage B60N or Yale deadbolt, installed - at a flat price with no surprises on the invoice.
Our 90-Day Done Right Promise covers every job in writing. If something isn’t right, we come back. No paperwork to file, no argument, no runaround.
Our Lock Installation & Rekey Services in Four Corners
Smart Lock Installation
Smart lock installation in Four Corners requires extra care because of the area’s older door stock. A 1950s split-level on Lorain Avenue often has a thinner door slab and a smaller bore hole than modern hardware expects. We carry adapter kits and reinforcing plates specifically for this. A typical smart lock install in Four Corners runs $220-$340, including any necessary door prep. We favor Yale Assure and Schlage Encode models that play well with older frames and don’t require drilling new holes through solid wood.
Keyless Entry
Keyless entry systems are popular with Four Corners landlords managing multiple units in the 1960s garden apartments near the intersection of Colesville and University. One master code, easy tenant turnover, no physical keys to track. We install keypad deadbolts and lever sets that retrofit cleanly into existing door prep, preserving the original door’s integrity. Most keyless entry installations in Four Corners fall between $180-$290. We program everything on-site and walk you through the code management before we leave.
Keypad Lock
Keypad locks bridge old and new - no phone required, no Wi-Fi dependency. For the Four Corners homeowner who wants convenience without complexity, a standalone keypad deadbolt from our Lock Installation & Rekey in Four Corners selection makes sense. We see strong demand in the ranchers off East Franklin Avenue, where residents want reliable entry for family members without distributing physical keys. Installation runs $160-$260. We always check strike plate alignment after installation, because these older homes shift.
Biometric Lock
Biometric locks - fingerprint readers - are finding their way into Four Corners’s renovated properties and owner-occupied homes. The technology has matured; modern units handle multiple prints reliably and don’t fail in humid Washington DC summers. We install biometric deadbolts starting around $280, with most Four Corners jobs landing between $280-$420. These require precise door prep and solid anchoring, which is why we don’t recommend them for doors with significant warping or frame rot. We’ll tell you honestly if your door can support the hardware.
Electronic Lock
Electronic locks with remote access and audit trails serve a growing niche in Four Corners’s small rental portfolios. A landlord with four units on the same block can see who entered when, issue temporary codes, and revoke access instantly. We install and program these systems, integrate them with existing property management workflows, and train owners on the software. Typical Four Corners electronic lock installation: $240-$380 per door.
Key Duplication
Key duplication sounds simple until you’re holding a Sargent key from 1964 with a keyway no one stocks blanks for. Our Four Corners shop carries an extensive blank inventory, including Medeco and Mul-T-Lock restricted profiles. When we can’t duplicate - and with some legacy hardware, we honestly can’t - we’ll explain exactly why and quote the replacement path. Standard key duplication in Four Corners runs $4-$12 per key. High-security or restricted keys: $18-$35.
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 Four Corners
We stock and install hardware from Schlage, Yale, Baldwin, and Mul-T-Lock - brands with proven durability in Four Corners’s climate and housing stock. Schlage B60N deadbolts handle the door-frame shifting common in older homes. Yale smart locks offer the retrofit flexibility these doors need. Baldwin provides the solid brass construction that lasts decades in humid summers. Mul-T-Lock’s high-security cylinders protect rental properties with pick-resistant, drill-resistant technology. We keep common parts on our trucks, so most Four Corners jobs don’t wait for a supply run.
Common Lock Installation & Rekey Problems We See in Four Corners Homes
- Obsolete Corbin or Sargent cylinders in 1950s-1970s homes. We regularly find original hardware on brick ramblers off University Boulevard with keyways discontinued decades ago. A “simple rekey” becomes a full lock swap because replacement pins and keys simply aren’t manufactured anymore. We quote the replacement upfront, never after disassembly.
- Freeze-thaw frame shifting in post-WWII Cape Cods. January through March, mid-Atlantic temperature swings cause wooden door frames in Four Corners’s older homes to contract and expand. Strike plates move. Bolt throws miss. We realign or relocate strikes, and sometimes recommend weatherstripping upgrades to reduce the cycle.
- Summer humidity swelling original doors. Homes lacking modern weatherstripping - common in the 20901 rental stock - experience door swelling from June through September. Deadbolts jam. Latches stick. We address the immediate lock issue and flag weatherstripping gaps that will bring us back next summer if ignored.
- Master-key system failures in 1960s garden apartments. Aging master-key systems in Four Corners’s multi-unit buildings develop cross-keying errors and worn pin chambers. Tenants find their key opens neighboring units. We rebuild or replace these systems with modern, properly pinned master-key hierarchies that maintain security across tenant turnover.
Pricing for Lock Installation & Rekey in Four Corners, MD
Here’s what lock work costs in the Four Corners market. These are the prices we quote on the phone - the same numbers on your invoice.
| Service | Typical Range in Four Corners |
|---|---|
| Standard rekey (single cylinder) | $45-$75 |
| Rekey with obsolete keyway (requires hardware swap) | $120-$220 |
| Deadbolt installation (standard door) | $140-$200 |
| Deadbolt installation (older door requiring prep) | $180-$260 |
| Smart lock installation | $220-$340 |
| Keyless entry / keypad lock | $160-$290 |
| Biometric lock installation | $280-$420 |
| Master-key system rebuild (per cylinder) | $85-$140 |
| Key duplication (standard) | $4-$12 |
| Key duplication (high-security) | $18-$35 |
| Emergency lockout response (Four Corners) | $89-$150 |
Several factors push jobs toward the higher end: obsolete hardware requiring full replacement, doors needing bore-hole enlargement or strike relocation, and master-key systems with complex pinning schedules. We diagnose over the phone when possible and always quote flat before dispatch. Seniors and veterans receive a permanent 5% discount. Call (844) 314-7347 for your exact estimate - it’s free, and there’s no obligation.
We Also Serve Cities Near Four Corners
Our service radius covers Silver Spring to the south, Hillandale to the east, White Oak to the northeast, and Adelphi to the southwest. Each community has its own housing character - Silver Spring’s high-rise conversions, Hillandale’s mid-century ramblers - and we adjust our approach accordingly. The same flat-price, ID-at-the-door standard applies everywhere we work.
Serving Four Corners, MD - Our Local Coverage Area
We’re based in the Four Corners 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 Four Corners
The original Corbin and Sargent cylinders in these homes use keyways and pin configurations that manufacturers discontinued 30-40 years ago. We serviced a 1962 brick rambler on a quiet street off University Boulevard where the original Sargent deadbolt had a non-standard keyway. After confirming replacement pins weren’t available, we swapped the entire lock to a Schlage B60N, modernizing the security for the new tenant while preserving the door’s existing bore holes. If your Four Corners home still has its original hardware, call (844) 314-7347 and we’ll inspect the keyway before quoting - no charge for the assessment.
Montgomery County’s rental licensing code effectively mandates rekeying between tenants, making Four Corners one of the busiest landlord-driven locksmith markets in eastern Montgomery County. Property managers must document that locks were changed or rekeyed before each new occupancy. We maintain records for our commercial clients and provide written certification on request. Call (844) 314-7347 to set up a landlord account with flat-rate rekey pricing.
The Yale Assure Lock SL or Schlage Encode Plus handle thinner door slabs and smaller bore holes better than bulkier alternatives. Both include retrofit plates that cover older door prep without visible gaps. We verify door thickness and backset before recommending a model - a step that prevents returns. Installation runs $220-$340 in Four Corners. Call (844) 314-7347 to schedule a free compatibility check.
Summer humidity swells original wooden doors that lack modern weatherstripping, compressing the gap between door and frame until the bolt scrapes or jams. This is especially common in the post-WWII stock off Colesville Road and University Boulevard. We free the mechanism, realign the strike if needed, and flag weatherstripping gaps. The lock fix is immediate; the weatherstripping prevents recurrence. Call (844) 314-7347 before the August humidity peaks.
Sometimes - if the keyway matches a profile we stock blanks for. Many 1960s Sargent residential cylinders use the RA or RC keyway, which we carry. Obscure commercial profiles may require factory ordering or prove unsourceable. We test-fit before cutting to avoid wasting your time and money. Standard duplication runs $4-$12; rare blanks run higher. Bring your key to our shop or call (844) 314-7347 to describe the head markings.
Ready to get your Four Corners locks sorted? Call (844) 314-7347 now. A live person answers - day, night, weekend, holiday. We’ll quote a flat price before any truck rolls, send a background-checked technician who shows ID at your door, and back every turn of the wrench with our 90-Day Done Right Promise in writing. No bait, no switch, no runaround. Just the square deal we’ve been giving Washington DC homeowners for over 42 years.
Written by Gerald Pittman, Owner at Strongbox Lock & Safe Co., serving Four Corners and surrounding communities since 2013.