Frosted Window Film
Hitachi Office
Illuminated Channel Letters
Chelmsford Wine & Spirits
Color-Changing LED Sign Box
Bad Brgr
Interior Wall Wrap
Bemis
Dimensional Lobby Sign
Secant
Double-Sided Pylon Sign
Portland Glass
Dimensional Channel Letters
Summit Strength
Storefront Wall Sign
Tideside
Illuminated Pylon Sign
Bagel World
Monument Directory Sign
Merrimack Marketplace
Frosted Window Film
Hitachi Office
Illuminated Channel Letters
Chelmsford Wine & Spirits
Color-Changing LED Sign Box
Bad Brgr
Interior Wall Wrap
Bemis
Dimensional Lobby Sign
Secant
Double-Sided Pylon Sign
Portland Glass
Dimensional Channel Letters
Summit Strength
Storefront Wall Sign
Tideside
Illuminated Pylon Sign
Bagel World
Monument Directory Sign
Merrimack Marketplace
Custom Signage · New England
Signs that make your New Hampshire businessimpossible to ignore.
From illuminated channel letters to monument signs and full vehicle wraps — we design, fabricate, and install signage built to last a lifetime of New England weather.
What We Make
Signage for every surface, every story.
One shop handles it all — design, fabrication, permitting, and installation for New Hampshire businesses — so your project stays consistent from first sketch to final bolt.
Design
Concept-to-completion design that translates your brand into signage built to be seen and built to last.
Site Survey & Permitting
On-site surveys and full permitting handled in-house, so your sign clears every town and state code without the headaches.
Illuminated Channel Letters
Front-lit, halo-lit, and face-lit LED letters that keep your brand glowing day and night.
Monument Signs
Permanent, architectural ground signs in stone, foam, or aluminum built to anchor your entrance.
Vehicle Wraps & Graphics
Full and partial wraps that turn your fleet into mobile billboards across New England.
Wayfinding & ADA
Directional and ADA-compliant signage systems that guide visitors with clarity and style.
Storefront & Window
Blade signs, window graphics, and awnings that pull customers through your door.
Pylons & Pole Signs
Tall, high-visibility pole and pylon signs engineered for wind, weather, and decades of use.
Sign Service & Maintenance
Relighting, relamping, panel swaps, and structural repairs that keep your existing signage looking sharp and code-compliant.
Selected Work
Built to be seen.
A look at recent signage crafted for businesses across New Hampshire, Vermont, and Maine.
Frosted Window Film
Hitachi Office
Illuminated Channel Letters
Chelmsford Wine & Spirits
Color-Changing LED Sign Box
Bad Brgr
Interior Wall Wrap
Bemis
Dimensional Lobby Sign
Secant
Halo-Lit Brass Sign
Christopher Cuozzo
Exterior Sign Refresh
Smokers Haven
Interior Wayfinding
Torrington Properties
Double-Sided Pylon Sign
Portland Glass
Dimensional Channel Letters
Summit Strength
Storefront Wall Sign
Tideside
Illuminated Pylon Sign
Bagel World
Monument Directory Sign
Merrimack Marketplace
Granite Monument Sign
88-90 Stiles Road
Dimensional Lettering
Chelmsford Fire Department
Outdoor Billboard
Amoskeag Urgent Dental Care
How It Works
Four steps from idea to installation.
Discovery & Consult
We walk your site, learn your brand, and map goals, zoning, and budget — no guesswork.
Design & Proofing
Scaled renderings and material specs brought to life, refined with you until it's perfect.
Fabrication
Built in-house with premium materials and weatherproof LED components made for New England.
Permit & Install
We handle permitting and install with our own crews — clean, code-compliant, on schedule.
Most projects wrapped in weeks, not months.
Our Story
Granite-tough signs, crafted in the Granite State.
Granite State Sign Co. brings 25+ years of hands-on industry experience to every build — designing and crafting signage that helps New England businesses stand out and stand up to everything a New England winter can throw at them.
We're a family-run shop that treats every project like it's going on our own building. No outsourced fabrication, no middlemen — just real craftspeople, real materials, and a real commitment to getting it right.
Questions
Sign questions, answered.
Everything you need to know about working with a New Hampshire sign company — from service areas and permits to turnaround times.
Get In Touch
Let's build something they can't miss.
Tell us about your project and we'll get back within one business day with next steps and a rough estimate — no pressure, no obligation.