Parker Custom Security installs and repairs commercial entrance doors, custom and arched aluminum entrances, storefronts, access control, intercom and door-entry systems, fire-rated doors, and door hardware for commercial and multi-tenant buildings throughout Brooklyn — from brownstone walk-ups and converted loft buildings to retail corridors in Bay Ridge, Flatbush, and Atlantic Avenue. We work with property managers, owners, boards, and facilities teams — not single-family homeowners. To schedule a free on-site estimate, call (212) 491-5627 or email info@parkercustomsecurity.com.
In Brooklyn, the Opening Is Rarely a Rectangle.
Brooklyn's building stock is older and less standardized than almost anywhere else we work. Brownstone and pre-war walk-ups carry arched masonry entries, stone surrounds, and openings that have shifted out of square over a century of settling. Converted warehouse and loft buildings in DUMBO, Gowanus, and Bushwick bring the opposite problem — oversized industrial entries never designed for controlled tenant access.
That matters because a stock door does not fit either one. Cutting the masonry to accept a catalog size is the wrong answer on a building whose entry is its best architectural feature. Parker Custom Security measures the opening that exists and fabricates an aluminum entrance to match it — arch included — then integrates the intercom and access control into the same entry.
Common Issues We Resolve
- Arched or out-of-square openings that stock doors will not fit
- Deteriorated original entrance doors in brownstone multi-tenant buildings
- Oversized industrial entries in loft and warehouse conversions
- Uncontrolled entry and metal-key management across many tenants
- Failing storefront doors, closers, and hardware on busy retail corridors
- Fire doors flagged at DOB/FDNY inspection
- Occupied buildings that cannot close during the work
Note: Parker Custom Security does not pull permits or act as a DOB/FDNY inspection authority. We prepare properties and install fire-rated doors and hardware to code so they are inspection-ready.
Security Services for Brooklyn Commercial Properties
Custom & Arched Entrance Doors
Custom-fabricated entrances are the work Brooklyn asks for most. When an entry carries an arched transom or a masonry opening that is no longer square, we template the opening and build an aluminum door and frame to fit it, rather than reducing the opening to fit a stock unit.
- Arched and radius-top aluminum entrances
- Custom-fabricated frames for out-of-square masonry openings
- Oversized entries for loft and warehouse conversions
- Insulated and laminated glass infill options
- Integrated intercom and access control in the same entrance
See the full write-up of a custom arched aluminum entrance we built for a Brooklyn apartment building.
Access Control Systems
Brooklyn multi-tenant buildings are often still running on metal keys that have been copied for decades. Access control replaces that with credentials you can issue and revoke, and it pairs directly with the entrance work rather than being bolted on afterward.
- Key fob, keypad, and card-reader entry
- Electric strikes and magnetic locks
- Multi-tenant and mixed-use building access
- Cloud-managed systems for multi-property portfolios
- New installs and system replacements
Access Control Brands We Install & Service
Parker Custom Security is an independent installer and service provider. We work with leading commercial access control manufacturers and can integrate with most existing systems.
Intercom & Door-Entry Systems
We install, replace, and repair wired and video intercom and door-entry systems for Brooklyn apartment buildings and commercial properties. On a custom entrance, the panel is designed into the jamb or the adjacent surround so the finished entry still looks intentional.
- Video and audio intercom systems
- Smartphone-connected door entry
- Multi-tenant directory systems
- Telephone entry systems
- Integration with access control
Intercom & Telephone Entry Systems We Install & Support
Storefront Doors & Retail Entrances
Brooklyn's retail corridors — Atlantic Avenue, Flatbush Avenue, Fifth Avenue in Park Slope, 86th Street in Bay Ridge — run storefront doors through thousands of cycles a week. We repair and replace the doors, closers, pivots, and locking hardware that wear out first.
- Aluminum storefront doors and glass entry systems
- Door repair, alignment, and frame reinforcement
- Closers, panic hardware, and ADA operators
- Electric strikes and magnetic locks
- Glass replacement
Emergency service: we handle urgent repairs that affect building security or access. Call (212) 491-5627 to report an issue.
Fire-Rated Doors & Commercial Door Compliance
Fire-rated doors are a code requirement in Brooklyn commercial and multi-tenant buildings. Damaged hardware, improper repairs, missing closers, or non-compliant modifications can cause an assembly to fail inspection.
- Fire-rated door installation, 60 minutes to 3 hours
- Stairwell, corridor, and compartment doors
- Hollow metal doors and frames
- Inspections and condition reports
- Door closer, panic, and exit hardware
- Hinges, locks, and frame reinforcement
Featured Brooklyn Project
Custom arched aluminum entrance — Brooklyn, NY. A Brooklyn apartment building needed its deteriorated entrance replaced, but the original masonry opening carried an arched top that no stock door would fit. Parker templated the existing arch, fabricated a matching aluminum entrance with glass infill, and integrated the entry hardware and intercom panel into the finished opening — without cutting back the masonry. Read the case study →
Ready to Upgrade Your Building's Security?
Parker Custom Security provides free on-site assessments for commercial and multi-tenant properties throughout Brooklyn. We measure your existing openings, evaluate entry systems, hardware, fire doors, and access control, and recommend solutions matched to your building.
What Clients Say
★★★★★ 4.8 on Google →Courteous and experienced team. They replaced our building's entry door and frame with quality hardware and attention to detail. Shoutout to the engineering team and front office for their knowledge and coordination. Highly recommend
Shawn Cornell · Jan 2025 · Google Review
Parker Security customer service and their implementation of a security system was quick and efficient. The workers involved the customer in decision-making along with their professional expertise. I would re-hire if need be.
V.B. · Jun 2024 · Google Review
Professional and easy to work with. Installed intercom and access control for us.
Larry Frukhtman · Apr 2024 · Google Review
Parker was excellent. Parker replaced 15 commercial [doors] in our warehouse. They completed the job in a timely and professional manner. Would recommend to everyone.
Colette Zarour · Apr 2024 · Google Review
Why Brooklyn Property Managers & Boards Choose Parker Custom Security
Commercial-focused since 2003. Parker builds entrances for the openings Brooklyn buildings actually have, not the ones a catalog assumes.
Custom Fabrication
Arched and out-of-square openings built to template, not cut to fit.
20+ Years in the Field
Serving the New York metro area since 2003.
Older Building Experience
Brownstone, pre-war walk-up, and loft conversion entries.
Doors + Access + Intercom
One contractor for the whole entrance, not just the hardware.
Commercial-Grade Hardware
PDK, Kantech, Napco, DoorKing, and other commercial-spec brands.
Long-Term Support
Ongoing repair and maintenance after installation.
Brooklyn — Neighborhoods Served
Parker Custom Security services commercial and multi-tenant clients throughout Brooklyn, including:
Also serving the rest of the NYC metro area.
Frequently Asked Questions
Does Parker Custom Security serve Brooklyn?
Yes. Parker Custom Security serves commercial and multi-tenant buildings across Brooklyn, including DUMBO, Williamsburg, Park Slope, Bushwick, Bay Ridge, and the Flatbush and Atlantic Avenue corridors.
Can you build a door for an arched or non-standard opening in a Brooklyn building?
Yes. Arched transoms, out-of-square masonry openings, and oversized entries are common in Brooklyn brownstones and converted industrial buildings, and stock door sizes rarely fit them. We measure the existing opening and fabricate an aluminum entrance to match it, as we did on a custom arched entrance for a Brooklyn apartment building.
Do you replace entrance doors in Brooklyn brownstones and pre-war walk-ups?
Yes. We replace entrance doors, frames, and vestibule systems on older Brooklyn walk-ups and brownstone multi-tenant buildings, including buildings where the original masonry opening has to be preserved rather than cut.
Do you work on converted warehouse and loft buildings in Brooklyn?
Yes. Loft and warehouse conversions in areas like DUMBO, Gowanus, and Bushwick often have oversized or irregular entries and heavy-traffic lobbies. We install commercial-grade aluminum entrances, electrified hardware, and access control suited to that use.
Do you install access control for Brooklyn commercial and multi-tenant buildings?
Yes. We design and install commercial access control — key fob, keypad, and card-reader entry — for Brooklyn offices, mixed-use, and multi-tenant properties, installed to local building and fire codes.
Do you repair storefront doors on Brooklyn retail corridors?
Yes. We repair and replace aluminum storefront doors, closers, locks, and hardware for busy Brooklyn retail corridors such as Atlantic Avenue, Flatbush Avenue, and Bay Ridge, and we handle urgent repairs that affect building security. Call (212) 491-5627 to report an issue.
Do you install and inspect fire-rated doors in Brooklyn commercial buildings?
Yes. We install fire-rated doors from 60 minutes up to 3 hours depending on the application, and property managers can hire us to inspect existing doors and provide a condition report to help prepare for DOB or FDNY inspection.
Do you work with Brooklyn property managers and building owners?
Yes. We work primarily with property managers, building owners, co-op and condo boards, and facilities directors on commercial and multi-tenant properties. We do not service single-family homes.
What does a custom Brooklyn entrance door or access control system cost?
Cost depends on the size and shape of the opening, whether custom fabrication is needed, the door and glass specification, and the entry hardware. Because no two Brooklyn openings are alike, we provide a free on-site estimate. Call (212) 491-5627.
Contact Parker Custom Security
Parker Custom Security
Address217 W. 135th Street
New York, NY 10030
Brooklyn · NYC Five Boroughs · Westchester County · Northern New Jersey
Get a Security Assessment for Your Brooklyn Property
Whether you manage a brownstone walk-up, a converted loft building, or a storefront on a busy Brooklyn corridor, Parker can measure your openings and recommend the right entrance, hardware, and access control.
Parker Custom Security — 217 W. 135th Street, New York, NY 10030
Serving Brooklyn and the greater New York metropolitan area since 2003.