Feb 25, 2026
Wall | Hollywood | Los Angeles
Continuous anti-climb spike installation on a perimeter wall near W Sunset Blvd in Hollywood, Los Angeles, maintaining a clean architectural look while securing the property.
“I am extremely satisfied. The seller was kind and attentive, and the product was top quality and exactly what I wanted.”
Facade | San Francisco
This case study features an installation on the facade of an apartment building nestled in a quiet residential area of San Francisco, USA. Mr. S.S., who owns a facade characterized by classically decorated arches and an ivory-colored exterior wall, consulted with us, and we proposed the "Gothic Black Dual Blade."
Furthermore, the wrought iron gate on the facade features a spiral pattern. By introducing a "Ninja Deterrent™" that is understated in design yet has a presence, it was possible to enhance security without compromising the appearance of the building's exterior.
The Facade
The building's classically detailed facade — ivory walls, bay windows, and a deeply recessed arched entry — is exactly the character the owner, Mr. S.S., wanted to protect. The challenge was to secure the recessed entryway without introducing anything that would clash with the period architecture. The Gothic Black Dual Blade was chosen precisely because it could blend into this composition rather than disrupt it.
Securing the Upper Ledge
Looking up, the Gothic Black Dual Blade runs as a crisp line along the ledge beneath the decorative corbels. Set against the ivory cornice and the open sky, the matte black spikes pick up the building's existing black accents instead of fighting them. The detailing reads as part of the architecture, even as it strips away any foothold along the ledge.
Classical Arch, Quiet Defense
Here the integration is clearest. Beneath the facade's large arch, a highly decorative wrought iron gate in black steel contrasts beautifully with the white wall, while the spike line on the ledge and a discreet camera overhead complete a layered defense. Each element adds protection — the gate at hand height, the spikes along the climbable ledge, the camera above — without concealing a single piece of the classical decoration.
Gate and Crown
From the front, the spiral-patterned wrought iron gate and the Gothic Black Dual Blade above it share the same restrained black palette. The spike line traces the ledge directly beneath the carved cornice, closing off the one surface a climber could otherwise use to reach the upper floors. The result is a secure entry that still reads, first and foremost, as an elegant period facade.
Summary
In this case study, we installed the "Gothic Black Dual Blade" on "Classical Decoration x Wrought Iron x Ivory Exterior Wall," enhancing security without compromising the customer's preferred aesthetic. If you are interested in perimeter security that enhances the design of your residential facility, please feel free to contact us.
Project Overview
- Location: San Francisco, California, USA
- Installation Location: Upper facade
- Product Used: Gothic Black Dual Blade
Written by
Kojiro OtaniFounder of Saitani-Ya Co., Ltd. and creator of the Ninja Deterrent™ brand. Drawing on Japan's tradition of shinobi-gaeshi, he designs and manufactures anti-climb security spikes that pair real deterrence with architectural beauty — writing from first-hand experience in their engineering, production, and real-world installation.
Products Used
Product Used in This Project
Type
Material
Finish Color
Unit Price / 1000mm
$360.00
Quantity
Subtotal
$360.00
More Projects
Feb 23, 2026
Entry Perimeter Upgrade｜Sherman Oaks | Los Angeles
A Ninja Deterrent project showcasing anti-climb security spikes installed at a entry perimeter upgradesherman oaks location.
Feb 18, 2026
Venice Alley Residence | Venice | Los Angeles
Low-profile anti-climb spikes installed along an alley-facing metal gate in Venice, Los Angeles, securing a quiet back-alley entry point with a modern aesthetic.
Feb 13, 2026
Family Side Gate | Queens | NY
Anti-climb security spikes installed on a white family side gate in Bellerose, Jamaica, Queens, NY, blending deterrence with a clean residential aesthetic.
Feb 11, 2026
Classic Brick Side Gate | Flushing | New York
Anti-climb security spikes installed on a classic brick side gate in Flushing, New York, harmonizing traditional architecture with modern security.
Feb 5, 2026
Black Entrance Gate | Miami Beach
Anti-climb security spikes installed on a black entrance gate in Miami Beach, combining elegant design with robust security.
Column
Guides & Insights
Mar 6, 2026
The Philosophy of 'Beautiful Security' — Why Shinobi Gaeshi Are Decorative
From the tradition of functional beauty in Japanese castle architecture to the design philosophy behind Ninja Deterrent's Iris, Gothic, and Forest series. Exploring the concept of 'beautiful security' that achieves both crime prevention and aesthetic harmony.
Read more →
Mar 6, 2026
What Makes a Burglar Give Up — Insights from Ex-Offender Interview Studies
What actually makes burglars abandon a target — grounded in convicted-offender research (UNC Charlotte). Why opportunistic burglars avoid time, exposure, and physical risk, and how shinobi gaeshi turn a quick climb into a wall of time.
Read more →
Mar 6, 2026
The 4 Principles of CPTED and Japanese Architecture — 'Defensive Design' Learned from Castles
Decoding the four CPTED principles through Japanese castle architecture. Loopholes, masugata barbicans, shinobi gaeshi, and stone walls — applying ancestral wisdom to modern residential security design.
Read more →
Contact us
Questions?
For general inquiries about our products or consultation regarding installation, please contact us.
Book a meeting?
Schedule a free online consultation with our team. Pick a time that works for you — available slots are shown in your local time zone.