Storefront Door Locks for Landlords and Property Managers

Landlords and property managers do not need a different lock for every turnover headache. They need one routine per door: read the bolt, record the backset, and when the existing mortise footprint matches, run that storefront on one shared code that changes with each tenancy.

Quick Answer: the verdict before you order anything

If this is your door…	Verdict
Door edge carries a swinging deadbolt or hookbolt	SK1850 line — deadlock path, one shared code per storefront
Door latches itself shut, with a push paddle inside	SK4510 line — deadlatch path, same code routine, paddle exit
Lock sits in the bottom rail of a full-glass door	SK777 line — bottom-rail path, judged separately from the other two
You manage several doors and cannot say which routine each one runs	Build the per-door record first — bolt, backset and last code change, per door

Clara's Monday audit: a key cabinet that answered nothing

Clara manages nine small storefronts for three local landlords. At 8:00 AM on Monday she opened the office key cabinet and counted 31 tagged keys — and for at least six of them, nobody could say which tenancy they belonged to. At 10:00 AM she stood at a vacant bakery unit whose outgoing tenant had returned two keys and kept, by his own cheerful estimate, “maybe one more.” At 1:00 PM she was across town at a salon whose door latched itself shut behind every customer — a different lock family entirely, filed in her spreadsheet as if it were the same problem. By 4:00 PM Clara stopped shopping for locks and started designing a routine: one record card per door, one access logic per family, and no tenancy ever again starting on keys she could not count. The locks were the easy part. The routine was the product.

One routine, three door families

Portfolios fail on sameness: treating every storefront door as the same lock because every storefront looks alike from the sidewalk. It is not. A deadlock door throws a bolt you set by hand. A deadlatch door catches itself shut and opens inside on a paddle. A bottom-rail door hides its lock in the rail at the foot of a full-glass door. Those three families do not interchange, and no code routine fixes a wrong-family order. What a landlord can standardize is the discipline around them: the same three questions at every door, the same per-door record, the same turnover move — when a tenancy ends, the shared code for that store changes, and the change gets dated in the record. Contractors, cleaners and incoming tenants then meet one predictable system, whatever family each door belongs to. Keep those turnover records with the lease file: they are exactly the paperwork an insurer or a buyer asks to see later, and it is worth asking your insurer what documentation or discounts apply — no insurer requires a keyless lock, but a dated access record is never wasted.

Three questions at every door in the portfolio

Q1: Which family is this door — deadlock, deadlatch or bottom rail?
Look at the door edge at handle height first. A solid bolt that throws straight into the strike is a swinging deadbolt; a hook-shaped bolt that grabs the strike is a hookbolt. Both are deadlock family and run on the SK1850. If your cylinder or frame says Vistawall or Kawneer, it's the same Adams Rite MS-type footprint — SK1850 fits the same opening. If the lock instead sits low, inside the bottom rail of a full-glass door, stop: that unit follows the SK777 bottom-rail path and is judged on its own.

Q2: Does the door latch itself shut, with a push paddle inside?
Then it is a 4510-style deadlatch, and that unit runs on the SK4510S(sfic) line: one shared code for that storefront outside, paddle exit inside. Record it as a deadlatch in the card — the next manager should never have to rediscover it.

Q3: What is the backset, and is it written down?
Measure from the door edge to the center of the cylinder hole: 1-1/8" covers roughly eight in ten doors, with 31/32" and 1-1/2" covering the rest. Photograph the door edge and the old lock, and write the measurement on that door's record card before ordering. On a deadlock door where the manager wants one physical backup held at the office, the SK1850S(sfic) adds that SFIC key — one shared code on a mechanical keypad with no batteries, no electronics, and it installs in minutes using the original holes when the footprint matches.

There's another option

Most landlords have never heard of a drill-free keyless retrofit: when the existing mortise footprint matches, an EASILOK keyless storefront lock drops into the original holes with no new drilling and installs in minutes, so a whole portfolio can run on changeable codes instead of uncountable keys. See the SK1850 line →

When this article doesn't apply

• A door in the portfolio is damaged, sagging or freshly repaired? Fix and judge the door first — fit is read on the hardware as it stands, not as the listing photo showed it.
• The entrance is a sliding or automatic door? Different entrance family entirely — this guide covers swinging storefront doors and bottom-rail glass doors.
• Your lease or local rules assign the lock to the tenant? Then this routine is a proposal to align on at signing, not a change to make mid-tenancy without agreement.

FAQ

Should every store in the portfolio share one code?
No — one shared code per storefront, held by that store's team. Stores turn over on different dates, so each door's code changes on its own schedule, and the record card for that door carries the date.

What belongs on a per-door record card?
Three things: the lock family (deadlock, deadlatch or bottom rail), the backset measurement with a photo of the door edge, and the date of the last code change. That card is what makes the next turnover a routine instead of an investigation.

Who holds the backup keys?
The landlord or manager's office, labelled by unit, only ever as backups. When a backup starts being lent out for daily entry, the portfolio is back to counting copies — the habit this routine exists to end.

Where does a portfolio start?
With the next vacancy, not a portfolio-wide rip-out. Run the three questions at that door, build its record card, and let each following turnover join the routine until the key cabinet is a backup drawer, not a mystery.

Searching "shop lock"? What you want is called a keyless storefront door lock.

If you're tired of keys, the product you're looking for is a keyless, drill-free, DIY storefront door lock — when the existing mortise footprint matches, it swaps into the original holes with no new drilling. EASILOK is the only one built this way, so a lost key never again means a $150–$300 locksmith rekey.

Bottom line: if you manage storefront doors whose keys you cannot count, then run one routine per door — read the bolt, record the backset, and fit a keyless EASILOK replacement when the footprint matches, so each tenancy starts on its own changed code.

More storefront-lock guides · EASILOK keyless storefront locks