Non-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Fast, Reliable Commercial Locksmith Across Chicago
Commercial locksmith work in Chicago runs $180-$550 depending on whether we’re rekeying existing cylinders, installing a master key system, or replacing frozen mortise hardware in pre-war buildings. Novak Lock & Security dispatches from our Chicago office, and our crews serve the full city grid from Rogers Park to Hegewisch. Call (331) 202-1318 and a live person will answer, quote a firm price, and lock it in under Haven Standard Clause 1 - the price on the phone is the price on the invoice.
Why Novak Lock & Security Chicago Is Chicago’s Preferred Commercial Locksmith Company
We’ve installed or serviced over 60,000 locks, keys, and systems since 2002. Every job started with a written price and ended with a documented photo record left with the customer. That record is standard, not an upgrade.
Our Chicago customers find us because they read the three-star reviews before they call. They want to see what happens when something goes wrong. Our 365-Day Done Right Promise means if it’s not done right, we make it right - Haven Standard Clause 7, applied to every lock installation, rekey, and emergency call.
Calls are answered by a live person, 24/7. No voicemail queue, no callback window. The technician who arrives is background-checked, uniformed, and works to The Haven Standard, the same documented quality framework applied across all ten Haven brands. Daniel Novak built this rule set in 2002, and it hasn’t changed.
We know Chicago’s hardware. The mortise locksets in two-flats along Milwaukee Avenue, the Yale cylinders in courtyard buildings off Sheridan, the Corbin hardware frozen solid after a January polar vortex - our technicians carry the parts and the pinning kits for equipment that most suburban locksmiths haven’t touched in years.
Our Commercial Locksmith Services in Chicago

Commercial Lockout
Lockouts in Chicago spike in January and February when polar vortex temperatures seize cylinders and solid-wood doors swell against frames. We were called to a three-flat on West Cortez Street in Humboldt Park where the owner-occupant landlord needed a master key system for all three units after a tenant turnover. The original 1920s Corbin mortise lock on the building entry had a frozen cylinder from the previous week’s polar vortex, and the solid-wood door had swelled so the deadbolt was misaligned by a quarter inch. We used a non-destructive entry to get in, replaced the frozen cylinder with a bump-resistant Medeco mortise cylinder, and pinned the existing interior mortise locks into a new master key system so one key opened the building entry and all three unit doors.
Our non-destructive entry methods protect Chicago’s original doors - many of which are 80+ years old and cannot be replaced without custom millwork. We quote the full price before dispatch, and that price includes the non-destructive entry, the cylinder replacement if needed, and rekeying to match.

Master Key System
Chicago’s pre-1945 two-flat and three-flat blocks in Pilsen and Avondale are packed with owner-occupied micro-landlords who must rekey between tenants under the Chicago RLTO, and a single block can have a dozen such buildings still running original mortise locksets. Unlike newer Sun Belt or suburban markets, commercial lock work here often means fitting master key systems into vintage mortise hardware that has never been replaced.
A master key system lets one key open all locks in a building while individual keys open only specific doors. We pin existing mortise locks where possible - saving the cost of full replacement - and document every shear line and master pin in writing. If the existing lock body is damaged or non-standard, we source replacement mortise cylinders that fit the original prep without splitting the door stile.
Master key installation in Chicago typically runs $220-$480 for a three-unit building, depending on whether we’re re-pinning existing hardware or replacing cylinders. We quote per lock, in writing, before any pinning begins.

High Security Locks
High-security cylinders cannot be picked or bumped by standard tools. In Chicago, we install Medeco and Schlage Primus cylinders into existing mortise lock bodies where the landlord wants to upgrade security without replacing century-old hardware that still functions.
The extreme seasonal swing in Chicago - from -20°F to 95°F - causes solid-wood doors to swell tight in summer and gap in winter, throwing bolt alignment off twice a year. A high-security cylinder in a misaligned lock will bind and fail just like a standard cylinder. We check bolt throw, door frame condition, and strike alignment before installing any high-security hardware. If the door needs adjustment, we say so in the written quote.
High-security mortise cylinder installation in Chicago runs $280-$550 per door, including cylinder, pinning to your key system, and alignment check.

Panic Bar Installation
Panic bars - the push-bar exit devices required by Chicago fire code on commercial egress doors - must be installed to match door construction that was never designed for them. Greystone and Chicago common brick buildings have frames that have been patched, settled, and painted over for 80+ years. We measure the stile width, check for concealed electrical runs, and quote the full installation including any frame modification needed for clean bolt engagement.
Panic bar installation in Chicago typically runs $380-$720, depending on whether the door needs rim-mount or mortise-style hardware and whether the frame requires reinforcement.

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.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Chicago
We stock mortise cylinders, cams, and pinning kits for Yale, Schlage, and Medeco - the brands most commonly found in Chicago’s older commercial and multi-unit residential buildings. Our Chicago office carries Corbin and Russwin parts for original hardware still in service. Factory-authorized work means we can source current-production cylinders that fit vintage lock bodies without destructive modification. Most parts pulls happen same-day or next-day; we don’t order from a central warehouse and make you wait.
Common Commercial Locksmith Problems We See in Chicago Buildings

- Assuming a modern deadbolt drops into a pre-WWII mortise prep. It won’t. The door stile is too narrow, the backset is wrong, and forcing it splits the wood and exposes jamb damage. We assess whether the existing mortise body can accept a new cylinder or whether the entire lockset needs replacement - and we tell you which before any work starts.
- Graphite or silicone lubricant failing during a polar vortex. At -15°F, the condensation inside a cylinder freezes solid and the lubricant turns to sludge. The lock that worked in October won’t turn in January. We extract the frozen cylinder non-destructively, replace it with a properly lubricated unit rated for Chicago’s temperature range, and document the condition in the photo record.
- Seasonal door swell throwing off deadbolt alignment. A deadbolt that aligned in July won’t throw in January on a century-old solid-wood door. The customer calls for a lock replacement when the real problem is door geometry. We measure the gap, check bolt throw at multiple points in the strike, and quote the actual fix - which may be door adjustment, not hardware replacement.
- RLTO rekeying delayed until the new tenant moves in. The Chicago Residential Landlord and Tenant Ordinance requires rekeying between tenants. Waiting until move-in day means an emergency call at premium rates. We schedule rekeys during turnover windows, quote per cylinder, and provide written documentation of the rekey date for landlord records.
Pricing for Commercial Locksmith in Chicago, IL
| Service | Typical Range in Chicago |
|---|---|
| Commercial lockout (non-destructive entry) | $180-$280 |
| Mortise cylinder rekey | $35-$55 per cylinder |
| Master key system (3-unit building) | $220-$480 |
| High-security mortise cylinder installation | $280-$550 per door |
| Panic bar installation | $380-$720 |
| File cabinet lock rekey or replacement | $65-$140 |
These are the ranges we quote on the phone. The dispatcher asks about lock type, building age, and access conditions, then gives a firm price. The technician is contractually prohibited from changing it at the door - Haven Standard Clause 1, in effect since 2002. There is no call-out surcharge added on arrival. The price quoted is the price on the invoice.
We also offer a Free Second Opinion on Any Written Estimate. Bring us a competitor’s quote and we will review it at no charge.
We Also Serve Cities Near Chicago

Our Commercial Locksmith in Chicago crews also work in Cicero, Berwyn, Oak Park, and Oak Lawn. Dispatch and scheduling are coordinated from our Chicago office. The same written-price rule, the same documented photo record, the same Haven Standard framework applies to every call in every town.
Serving Chicago, IL - Our Local Coverage Area
We’re based in the Chicago 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 - Commercial Locksmith in Chicago

Most original mortise lock bodies in Chicago’s two-flats and three-flats can be rekeyed if the internal mechanism isn’t broken or worn past specification. We remove the cylinder, inspect the lever pack and bolt work, and tell you before any pinning begins whether rekeying is viable or replacement is necessary. Call (331) 202-1318 for an exact quote - estimates are free.
Condensation inside the cylinder freezes when temperatures drop below 0°F, and standard graphite or silicone lubricant thickens and traps moisture. The fix is a cylinder rated for extreme cold, properly lubricated with a moisture-displacing compound, and installed with attention to door gap so the bolt isn’t binding under pressure. Call (331) 202-1318 for an exact quote - estimates are free.
The Chicago Residential Landlord and Tenant Ordinance requires landlords to rekey or replace locks between tenants in residential rental units, and many commercial lease agreements incorporate similar provisions. We provide written documentation of rekey date and cylinder serial numbers for landlord records. Call (331) 202-1318 for an exact quote - estimates are free.
Most keypad and smart lock hardware is designed for standard bored-lock prep, not the narrow stiles and mortise pockets of Chicago’s original doors. We assess whether the door can accept the hardware without structural modification, and if not, we quote alternatives - including mortise-compatible electronic cylinders - that achieve the same access control without damaging century-old woodwork. Call (331) 202-1318 for an exact quote - estimates are free.
We service Yale, Corbin, Russwin, Sargent, and Schlage mortise hardware, plus current-production Medeco and Schlage Primus high-security cylinders designed to fit vintage lock bodies. Our Chicago office stocks the cams, cylinders, and pinning kits for these brands. Call (331) 202-1318 for an exact quote - estimates are free.
Call Novak Lock & Security at (331) 202-1318 for a free estimate. A live person will answer, ask about your building and lock type, and quote a firm price that will not change when the technician arrives. Every job includes a documented photo record and is backed by our 365-Day Done Right Promise.
Written by Daniel Novak, Owner at Novak Lock & Security, serving Chicago since 2002.






