Pre-1990 PSL homes (especially older Bayshore, original Stuart, and Jensen Beach builds) frequently have mortise locks - chunky steel cases buried in the edge of the door. When they fail, builder-grade bored locksets won't replace them like-for-like. We rebuild, replace, or convert to modern mortise hardware - Schlage L9000, Sargent 8200, Best 35H.
Mortise lock replacement in Port St. Lucie - vintage and modern. Schlage L9000 series (residential + commercial), Sargent 8200, Best 35H, plus Adams Rite MS1850S for narrow-stile aluminum doors.
Cost: $260-580 for like-for-like mortise replacement. Conversion to bored deadbolt + handle (when the door allows it) sometimes makes more sense and runs $240-440.
Pre-1990 PSL homes are the main customer - especially the older Bayshore neighborhoods, original 1970s-1980s Stuart, and Jensen Beach pre-condo era. Modern PSL builds (1995+) almost always use bored locksets instead.
Mortise locks are the heavy commercial lock bodies pocketed into the edge of the door - the kind you see on hotel entrances, clubhouse front doors at Village at PGA Verano, office building entries, and high-end residential. When the internal lockset wears out, the lever goes loose, the latch will not retract fully, or the deadbolt will not throw past the strike. The whole 6-inch lock body in the door pocket has to come out.
This is not a $35 box-store replacement. Mortise bodies are Schlage L9000 series, Sargent 8200 series, Corbin Russwin ML2000, Best 45H - $180 to $340 for the body alone, plus templating to match the existing pocket. A handyman will try to force a non-matching body into the pocket and end up routing wood, ruining the door. Doctor Lockout templates the existing mortise prep and orders the matching body before we open the door.
Mortise body replacement runs $240-520 installed. Call (772) 284-5142 for templated service across PSL.
Most-common mortise bodies on the van. Corbin Russwin ML2000 and Yale 8800 sourced inside 24 hours.
Mortise body swap saves the existing door. Door companies will quote a full slab replacement to avoid the templating job.
Schlage Primus, Medeco M3, Mul-T-Lock MT5+ cylinders get re-pinned to your existing keyway - no whole-building rekey.
Mortise bodies we install are ANSI/BHMA Grade 1 cycle-tested to 1,000,000 operations. The right grade for clubhouse and office traffic.
If we have the matching body on the van, the swap is 90 minutes on-site. Faceplate and strike included.
Mortise functions (entry, storeroom, classroom, office, dormitory) all match the existing use. We do not change door behavior on the user.
Handymen do not template mortise pockets. They guess, force a body that does not fit, route out wood, and the door is ruined. Doctor Lockout has the body templates, the function chart, and the keying system to swap a Schlage L9000 or Sargent 8200 without modifying the door at all.
Pocket dimensions and faceplate template confirmed before the body is ordered. No 'wrong part, return trip.'
L9050 storeroom function does not become L9070 classroom function by accident. The door behaves the same after the swap.
Existing master key system, restricted keyway, or sub-master gets preserved. We do not break your keying hierarchy.
If the new body does not drop in clean, we get the right body - we do not chisel the door pocket open.
Before any mortise job we confirm the door actually has a mortise lock, not a bored lockset. The two are NOT interchangeable.
Mortise lock. A rectangular steel lock case (4-6 inches tall, 1 inch thick, 4-5 inches deep) buried in a pocket cut into the door edge. The handle, thumb-turn, and deadbolt are all part of one integrated assembly. Common on older commercial doors, pre-1990 residential, and high-end residential where the look is important. The big advantage: integrates the latch and deadbolt into one mechanism, more secure, much heavier-duty than a bored lockset.
Bored lockset. What's installed in 95% of homes built after 1990. Two separate circular bores cut horizontally through the door face - one for the doorknob/lever and one (usually 5-1/2 inches above) for the deadbolt. Cheaper, easier to install, easier to replace with new hardware. Less secure than mortise but adequate for most residential needs.
How to tell which one you have:
If you have a mortise lock and it fails, you've got three options: rebuild the existing case (if parts are available), replace with a new modern mortise (Schlage L9000 etc.), or convert to bored hardware (drill new bores, fill the mortise pocket). We help you choose.
Schlage L9000 series. The modern residential/light-commercial mortise lock. Available in entry, classroom, storeroom, and dummy functions. Available with Schlage SC keyway for keyed-alike with the rest of your house, or Primus high-security if you want anti-pick. Fits the standard 4-7/8 inch tall mortise pocket. $180-380 hardware. Most common modern replacement we install in PSL older homes.
Sargent 8200 series. Heavier-duty than the L9000, common on older PSL government and school buildings. Available in over 20 functions including dormitory, asylum, hotel. $260-480 hardware. We install in residential when the customer specifically requests Sargent or when the existing door has a Sargent mortise pocket already.
Best 35H series. Best is the cheapest 'Grade 1' mortise option, common in apartment complexes and lower-end commercial. Available with the Best small-format interchangeable core (SFIC) keying system, which is what you want if you manage multiple doors and need to rekey often. $220-440 hardware. We install Best primarily for property managers.
Adams Rite MS1850S. Not a residential mortise - this is the narrow-stile mortise deadbolt used on aluminum-framed storefront doors at PSL commercial buildings. Different beast entirely. $140-280 hardware. We service these on commercial doors but mention here because customers sometimes confuse 'mortise' (residential) with 'storefront mortise' (commercial aluminum).
Yale, Falcon, Corbin Russwin, and vintage rebuilds. Older PSL doors sometimes have rare hardware - 1970s-era Yale, Russwin, Corbin. We source vintage replacement parts for rebuilds when possible (eBay, Locksmith Ledger classifieds, vintage suppliers) but availability is hit-or-miss. When parts can't be sourced, we recommend Schlage L9000 conversion which uses the same mortise pocket dimensions.
Trim options. The handle / lever / knob / escutcheon that goes on the outside of a mortise lock - separate from the lock body itself. We carry common trim packages (lever, knob, plate-style) in brass, brushed nickel, antique brass, oil-rubbed bronze. Custom historical or designer trim we order in (typically 1-3 weeks).
| Service | Typical Price | Notes |
|---|---|---|
| Mortise lock rebuild (existing case, new parts) | $160 - $320 | When original-brand parts are still available. |
| Schlage L9000 mortise replacement (like-for-like) | $280 - $480 | Hardware + labor, standard residential function. |
| Sargent 8200 mortise replacement | $340 - $580 | Heavier-duty option, common on commercial. |
| Best 35H mortise replacement (SFIC compatible) | $300 - $520 | For property managers using small-format IC. |
| Mortise to bored conversion | $240 - $440 | Drill new bores, fill old mortise pocket. |
| Adams Rite MS1850S (storefront mortise) | $240 - $420 | Aluminum storefront door application. |
| Trim-only replacement (handle/lever swap) | $120 - $240 | When the lock body is fine but trim is broken. |
| Decision | Doctor Lockout | Big-box / new door install | Vintage hardware restorer |
|---|---|---|---|
| Diagnose rebuild vs. replace | Yes - free with quote | No - sells you new door | Yes but pricier |
| Schlage L9000 / Sargent 8200 stocked | L9000 yes, Sargent ordered in | No - all ordered in | No |
| Cost for like-for-like modern replacement | $280-580 | $1,200+ (new door) | $580-1,200 |
| Mortise-to-bored conversion option | Yes - $240-440 | No (sells new door) | Refuses (changes look) |
| Historical trim and finish matching | Common finishes stocked, custom ordered | Limited | Specialty |
Real person on the phone in under 2 rings. Locksmith on-site in 15-30 minutes. Honest price before any tools come out.
Call (772) 284-5142Like-for-like modern replacement (Schlage L9000 or Sargent 8200): $280-580 including hardware and labor. Rebuild of the existing mortise case with new internals (when parts are available): $160-320. Conversion to bored deadbolt + handle hardware (drilling new bores, filling the mortise pocket): $240-440. We diagnose which option fits your door for free with the quote.
Not directly - the door has a pocket cut for a mortise, not the two circular bores that a standard deadbolt + knob need. To swap from mortise to bored hardware we have to fill the mortise pocket (wood plug, sanded and stained) and drill new bores for the new lockset. Costs $240-440 versus $280-580 for a like-for-like modern mortise replacement. We recommend keeping mortise hardware on doors where the historical look matters (older Bayshore homes especially).
Generally yes. A Schlage L9000 mortise has a much larger steel case, longer bolt throw, and more robust strike-plate engagement than a typical Schlage B60 deadbolt + bored handle combo. Mortise locks are also harder to defeat with kick-in attacks because the lock case spans more of the door edge. The trade-off is cost and complexity - mortise is 2-3x the hardware cost of a comparable bored deadbolt setup.
Match what's already there. If the door has a mortise pocket, replace with a modern mortise (Schlage L9000, Sargent 8200) rather than converting. If the door has bored holes, install standard bored hardware. Conversion goes one direction much more easily - bored doors generally can't accept a mortise lock without major woodwork. The 'bored-vs-mortise rule' is: keep mortise where mortise exists, install bored on new doors and most replacements after 1990.
60-120 minutes per door for like-for-like replacement (pull the old, drop in the new, align the strike, install trim). Rebuilds take 90-150 minutes because parts are picked one at a time. Mortise-to-bored conversion is the longest job - 2-4 hours including filling the pocket and drilling new bores. Most customers see us in and out in under 2 hours.
Usually yes. Schlage L9000, Sargent 8200, and Best 35H are all available in antique brass, bright brass, oil-rubbed bronze, brushed nickel, and several other common finishes. Custom historical finishes (true vintage patina, satin chrome from a particular era) sometimes require ordering specialty trim - 1-3 week lead. Customers who want exact-match vintage we sometimes route to historic restorers.
Mortise lock work in PSL is concentrated in the older neighborhoods - Bayshore north of Walton Road, the original PSL grid built in the late 1970s, plus the older single-family homes in Jensen Beach, downtown Stuart, and the Port Salerno waterfront. Modern construction (Tradition / Telaro / Veranda Bay / PGA Verano) almost never uses mortise hardware.
Last updated: 2026-05-18
