Maryland & Mid-Atlantic
Protecting People.
Securing Institutions.
Building Community.
4S Lock and Safety delivers expert locksmith, access control, and security technology solutions to hospitals, schools, nonprofits, businesses, government facilities, and residents across Maryland and the Mid-Atlantic region — with the precision of master craftspeople and the heart of community builders.
Our Services
Comprehensive locksmith, access control, and security solutions — customized to your needs.
Commercial Services
Keyless entry, master key systems, access control, and security solutions for businesses of every size.
Residential Services
Reliable lock installation, electric locks, and keyless solutions to keep your home safe every day.
Government Services
Master key systems, ADA solutions, access control, and door hardware for government facilities at every level.
Door Hardware & Access Control
Automatic operators, electric strikes, magnetic locks, PACS, and full ADA-compliant door hardware.
Consulting Services
Architectural consulting, compliance assessments, safety plans, and security strategy for complex projects.
4S Lock and Safety Academy
Professional locksmith and security technician training — from foundational courses to advanced certifications.
“4S Lock and Safety provided exactly the level of professionalism and expertise our family required. From the initial consultation to installation, the work was precise, tailored to the needs of my family, and completed on time. We will not use anyone else.”
— Laura Castillo-Page, PhD. — Burke, VA
Why 4S Lock and Safety?
We combine technical mastery with a deep commitment to the communities we serve.
Master Craftspeople
We hold ourselves to the highest professional and technical standards in the industry. Our work is precise, our knowledge is current.
Community Builders
We build relationships, not just transactions. We advocate for the communities we serve and partner with schools, hospitals, and nonprofits.
Certified, Licensed & Trusted
Tiffani St.Cloud, CPC, EST, ESS holds Maryland and Virginia Locksmith Licenses and Virginia Low-Voltage Certification. 4S Lock and Safety is a woman-owned, minority business ready to serve government and institutional procurement requirements.
Founded on Expertise. Rooted in Community.
4S Lock and Safety was founded by Tiffani St.Cloud — a licensed locksmith, certified security professional, and former institutional leader with nearly two decades of experience at the Association of American Medical Colleges. Tiffani holds certifications as a Certified Professional Coach (CPC), Electronic Security Technician (EST), and Electronic Security Specialist (ESS), and is licensed as a locksmith in Virginia and Maryland.
“Every door we secure is an act of protection and every technician we train is an investment in the communities we serve.”
— Tiffani St.Cloud, CPC, EST, ESS, President and Founder
Security or Safety Concern? Locked Out? We're Here.
Projects and Service Contracts
Planning ahead? Schedule a no-obligation consultation and let us design a security solution built around your specific needs. Our lead technician holds Maryland and Virginia Locksmith Licenses and professional certifications including CPC, EST, and ESS.
Schedule a ConsultationEmergency Services
Need immediate service? We provide emergency locksmith services to the Hagerstown community. Higher service rates apply. Call (202) 743-6251 for immediate response.
Call Now — (202) 743-6251Where We Work
4S Lock and Safety provides locksmith, access control, and security integration services across Maryland and the Mid-Atlantic region. We serve clients in Washington County, Frederick County, Montgomery County, Prince George's County, Baltimore City and County, and throughout the greater D.C. metro area — including Northern Virginia and Southern Pennsylvania.
For large-scale institutional projects, we consult and travel region-wide. Contact us to confirm service availability in your area.