Are landlords required to rekey rental units between tenants in San Francisco?

Yes. Under California Civil Code Section 1942.5, landlords have habitability obligations that California courts have interpreted to include rekeying between tenancies — and many San Francisco lease agreements now include an explicit rekeying clause. Beyond the legal requirement, failure to rekey exposes landlords to significant liability if a former tenant re-enters using an unreturned key. We work directly with San Francisco property managers and can schedule rekeying around tenant move-out dates across single units and entire multi-unit buildings.

Can you install a modern deadbolt on a Victorian or Edwardian door in San Francisco?

Yes — this is one of the most common residential services we perform in San Francisco. Pre-1940 doors in the city frequently use mortise lock preps rather than the cylindrical bore prep found in modern doors. Older hardware often uses Corbin or Sargent cylinder housings, and SF door frames tend to have limited structural depth compared to newer construction. Our technicians are experienced with these installations and can fit Grade 1 deadbolts and high-security cylinders into existing mortise preps without drilling new bores or modifying the door structure in most cases. If your door has an unusual prep or frame condition, we assess it before quoting.

Do I need my landlord's permission to rekey my apartment in San Francisco?

Under San Francisco's Rent Ordinance and California Civil Code, tenants have the right to rekey their unit for security purposes. It's generally advisable to notify your landlord and provide a copy of the new key — most SF lease agreements include a clause requiring this. If you've experienced a security incident, a break-in, or a change in roommates, rekeying promptly is reasonable and protected under California tenant rights. We work with both SF tenants and property managers and can advise on the right approach when you call.

Are landlords required to rekey rental units between tenants in San Francisco?

Yes. Under California Civil Code Section 1942.5, landlords have habitability obligations that California courts have interpreted to include rekeying between tenancies — and many San Francisco lease agreements now include an explicit rekeying clause. Beyond the legal requirement, failure to rekey exposes landlords to significant liability if a former tenant re-enters using an unreturned key. We work directly with San Francisco property managers and can schedule rekeying around tenant move-out dates across single units and entire multi-unit buildings.

Can you install a modern deadbolt on a Victorian or Edwardian door in San Francisco?

Yes — this is one of the most common residential services we perform in San Francisco. Pre-1940 doors in the city frequently use mortise lock preps rather than the cylindrical bore prep found in modern doors. Older hardware often uses Corbin or Sargent cylinder housings, and SF door frames tend to have limited structural depth compared to newer construction. Our technicians are experienced with these installations and can fit Grade 1 deadbolts and high-security cylinders into existing mortise preps without drilling new bores or modifying the door structure in most cases. If your door has an unusual prep or frame condition, we assess it before quoting.

Do I need my landlord's permission to rekey my apartment in San Francisco?

Under San Francisco's Rent Ordinance and California Civil Code, tenants have the right to rekey their unit for security purposes. It's generally advisable to notify your landlord and provide a copy of the new key — most San Francisco lease agreements include a clause requiring this. If you've experienced a security incident, a break-in, or a change in roommates, rekeying promptly is reasonable and protected under California tenant rights. We work with both SF tenants and property managers and can advise on the right approach when you call.

Residential Locksmith in San Francisco, CA

San Francisco's residential rental market moves fast, its housing stock is old, and its property security landscape is specific. More than 60% of the city's homes were built before 1960 — Victorian and Edwardian flats with mortise lock preps and door frames that don't accommodate standard hardware off the shelf. Meanwhile, the majority of residents rent, which means rekeying between tenancies isn't optional — it's a legal obligation under California Civil Code Section 1942.5.

A-A Lock & Alarm Inc. has handled residential locksmith work across San Francisco for over 60 years, from single-unit rekeying in the Mission to smart lock installation across Pacific Heights condo buildings and post-break-in hardware upgrades in the Outer Sunset. Call (800) 422-5625 or contact us online.

📞 24/7 Response: Call (800) 422-5625 for lockouts, emergencies, and same-day rekeying across all SF neighborhoods.

A locksmith is changing the lock at a home with a drill.

What Residential Locksmith Services Do We Provide in San Francisco?

Rekeying After a Tenancy Change

California Civil Code Section 1942.5 establishes landlord habitability obligations that California courts have interpreted to include rekeying between tenancies — and most San Francisco lease agreements now include an explicit rekeying clause. Until locks are rekeyed, everyone who has ever held a key to that property retains access: previous tenants, former partners, contractors, building staff.

Rekeying changes the internal pin configuration of the existing cylinder so only new keys work. The hardware stays in place. A standard two-cylinder front door (deadbolt and knob or lever) takes under 30 minutes and costs a fraction of full lock replacement. We rekey all common residential lock types — Kwikset, Schlage, Baldwin, Medeco — and can service an entire multi-unit building in a single visit. We offer scheduled rekeying programs for SF property managers tied to tenant move-out dates.

Deadbolt Installation on Victorian and Edwardian Doors

San Francisco's pre-1940 housing stock presents specific lock challenges. Victorian flats in the Mission, Castro, Noe Valley, and Haight-Ashbury, and Edwardian buildings across the Richmond and Sunset, typically use mortise lock preps — a deep rectangular pocket in the door edge — rather than the cylindrical bore prep found in modern doors. Many carry original Corbin or Sargent cylinder housings that require different tooling and techniques than standard installs.

Our technicians are trained on these preps. We install Grade 1 deadbolts and high-security cylinders into existing mortise housing without drilling new bores or modifying the door structure in most cases. If your Nob Hill flat or North Beach Victorian has hardware that hasn't been touched in decades, we assess it on-site before quoting — and we'll tell you honestly whether rekeying or full replacement is the right call.

Post-Break-In Lock Upgrades

Residential break-ins in San Francisco often exploit the same vulnerability: weak strike plate installation on doors carrying standard Grade 3 deadbolts. Across neighborhoods from SoMa to the Outer Sunset, many older homes still carry the same hardware installed when they were built. After a break-in — or as a proactive upgrade — we assess your existing hardware and recommend improvements scaled to your actual risk:

ANSI Grade 1 deadbolts significantly more resistant to kicking and drilling than the Grade 2–3 hardware in most SF homes
High-security cylinders Medeco, Mul-T-Lock, ASSA Abloy — anti-pick pins, anti-drill plates, patented keyways preventing unauthorized copying
Reinforced strike plates 3-inch screw installation addresses the most common forced-entry failure point
Door reinforcement hardware for older SF door frames with limited structural depth

Smart Lock Installation for San Francisco Homes and Condos

Smart locks solve a problem that's particularly relevant in San Francisco's dense rental market: managing access across multiple residents, frequent tenancy changes, and the need to grant or revoke entry without a physical key exchange.

We install and configure keypad, Bluetooth, and app-controlled smart locks for single-family homes, duplexes, triplexes, and multi-family buildings across all San Francisco neighborhoods. For HOA-managed condo buildings in Pacific Heights, Russian Hill, or Nob Hill, we advise on models that meet common aesthetic requirements — Schlage Encode and Yale Assure have low-profile designs that work with pre-war door hardware. For landlords, smart locks eliminate the cost and scheduling burden of rekeying between every tenancy: access codes change remotely in seconds.

We work with Schlage Encode, Yale Assure, August, and Kwikset Halo platforms and advise on compatibility with your existing deadbolt prep before any hardware is ordered.

Residential Lockouts

Locked out of your home or apartment? We provide non-destructive residential lockout service across all of San Francisco, 24 hours a day. Most lockouts in central SF neighborhoods — Mission, Castro, SoMa, Pacific Heights, Noe Valley — are resolved within 20–30 minutes of your call. The Richmond and Outer Sunset typically run 25–40 minutes. We verify identity before opening any residence, and same-visit rekeying is available if you want to change your locks at the same time.

Key Duplication

We duplicate standard house keys, restricted high-security keys, and padlock keys. Every key is inspected and tested before handoff. For restricted or patented key systems — Medeco, Mul-T-Lock, ASSA Abloy — we're authorized to duplicate keys that hardware stores cannot legally copy.

Which San Francisco Neighborhoods Do You Serve?

Our residential locksmith technicians cover every SF neighborhood. Here's how we typically see demand break down by area:

Mission District / Castro / Noe Valley High volume of rental units and Victorian flats. Rekeying between tenancies and post-break-in upgrades are the most common calls.
Pacific Heights / Marina / Cow Hollow Edwardian multi-family buildings and high-end condos. Smart lock installation and master key systems for HOA-managed properties.
Richmond / Outer Sunset Predominantly residential street-level homes and flats. Deadbolt upgrades on older stock and residential lockouts are frequent.
SoMa / Tenderloin Dense rental stock, higher security incidents. Post-break-in rekeying and Grade 1 hardware upgrades are common.
Nob Hill / Russian Hill / North Beach Pre-war buildings with original mortise hardware. Deadbolt retrofits and high-security cylinder upgrades.
Haight-Ashbury / Cole Valley / Inner Sunset Mixed owner-occupant and rental. Rekeying and smart lock installation for owner turnover and new tenants.

How Much Does Residential Locksmith Service Cost in San Francisco?

Pricing depends on the service type, hardware selected, and time of day. Here are typical starting ranges:

Rekeying $25–$50 per cylinder. Standard two-cylinder front door: $50–$100 total.
Residential lockout (daytime) $65–$100
Residential lockout (after-hours / weekend) $100–$150
Deadbolt installation — standard Grade 1 $80–$150 per lock, depending on door prep
High-security cylinder upgrade (Medeco, Mul-T-Lock) Priced by hardware — written estimate before work begins
Smart lock installation Varies by platform and number of units — in-person assessment for multi-unit buildings

Pricing note: We provide a firm quote before any work begins — no charges on arrival beyond what was agreed. After-hours calls carry a higher service fee, and we're transparent about this when you call.

Frequently Asked Questions

Are landlords required to rekey rental units between tenants in San Francisco?
Yes. Under California Civil Code Section 1942.5, landlords have habitability obligations that California courts have interpreted to include rekeying between tenancies — and many San Francisco lease agreements now include an explicit rekeying clause. Beyond the legal requirement, failure to rekey exposes landlords to significant liability if a former tenant re-enters using an unreturned key. We work directly with San Francisco property managers and can schedule rekeying around tenant move-out dates across single units and entire multi-unit buildings.
Can you install a modern deadbolt on a Victorian or Edwardian door in San Francisco?
Yes — this is one of the most common residential services we perform in San Francisco. Pre-1940 doors in the city frequently use mortise lock preps rather than the cylindrical bore prep found in modern doors. Older hardware often uses Corbin or Sargent cylinder housings, and SF door frames tend to have limited structural depth compared to newer construction. Our technicians are experienced with these installations and can fit Grade 1 deadbolts and high-security cylinders into existing mortise preps without drilling new bores or modifying the door structure in most cases. If your door has an unusual prep or frame condition, we assess it before quoting.
Do I need my landlord's permission to rekey my apartment in San Francisco?
Under San Francisco's Rent Ordinance and California Civil Code, tenants have the right to rekey their unit for security purposes. It's generally advisable to notify your landlord and provide a copy of the new key — most San Francisco lease agreements include a clause requiring this. If you've experienced a security incident, a break-in, or a change in roommates, rekeying promptly is reasonable and protected under California tenant rights. We work with both SF tenants and property managers and can advise on the right approach when you call.
Can smart locks be installed on San Francisco condo and rental units?
Yes. Smart locks are increasingly common in SF's condo and multi-family market. We install keypad and app-enabled smart locks compatible with most standard door preps and many mortise-prep doors. For HOA-managed buildings, we advise on models that meet common aesthetic requirements — Schlage Encode and Yale Assure have profiles that work well on pre-war SF doors. For landlords managing multiple units, smart lock installation across an entire building can be coordinated in a single visit, eliminating the need for physical rekeying between tenancies.
How much does residential locksmith service cost in San Francisco?
Rekeying runs $25–$50 per cylinder — a standard two-cylinder front door setup (deadbolt and knob/lever) costs $50–$100. Residential lockouts start at $65–$100 daytime and $100–$150 after-hours or weekends. Deadbolt installation varies by hardware grade and door prep complexity; high-security cylinder upgrades (Medeco, Mul-T-Lock) cost more due to proprietary blanks and equipment. We provide a firm written quote before any work begins. Call (800) 422-5625 for a specific estimate.

Secure Your San Francisco Home — Call A-A Lock & Alarm

Whether you need a single unit rekeyed, a smart lock installed across a multi-unit building, or an emergency lockout resolved at 2 a.m. in the Mission — A-A Lock & Alarm Inc. has been handling residential security in San Francisco for over 60 years. Licensed, bonded, and insured.

Call (800) 422-5625 for immediate service — or contact us to schedule a non-emergency appointment.