Give your home a striking focal point that actually solves a problem. Our custom spiral staircases connect decks, lofts, patios, and balconies in Colorado homes, saving square footage while adding serious architectural character, indoors and out.
Why Griffin Decks & Covers
Most spiral staircase companies sell to contractors or ship flat-pack kits across the country. We work directly with homeowners right here in Colorado.
That matters because every staircase we design starts with your property, your layout, and your goals. We’ve spent years building custom decks, pergolas, and outdoor structures along the Front Range, so we understand the specific challenges that come with Colorado’s climate and terrain.
Snow loads at 7,000 feet are real. So is the UV damage from 300 days of sunshine. Wind gusts that rattle through foothill properties can stress a poorly anchored staircase. We factor all of that into material selection, anchoring methods, and finish coatings before a single piece gets fabricated.
If your lot is steep, your deck is elevated, or your indoor layout just doesn’t have room for a traditional staircase, a spiral design can open up possibilities that standard stairs simply can’t.
Our work is centered on helping homeowners create outdoor spaces that fit their property, lifestyle, and long-term goals.
Every spiral staircase is drawn to fit your space. We don't pull prefab sizes off a shelf. Diameter, height, tread count, material, and finish are all yours to choose.
Freeze-thaw cycles, heavy snow, high-altitude UV, and rapid temperature swings all factor into our material specs and structural connections.
A spiral staircase can fit where a standard run can't. That's a real advantage on tight lots, narrow decks, and homes where every square foot counts.
We build decks, covers, and railings too. Your staircase ties into the larger structure as a single, coordinated project.
We handle the permit applications, engineering documentation, and inspector communication. You don't have to sort out municipal paperwork on your own.
Staircase Types
The right spiral staircase depends on where it's going, what it connects, and how you'll use it every day. Here's how we break down the options.
Outdoor spirals are the most popular request we get. Colorado homeowners with elevated decks, second-story walkouts, or hillside properties need ground access that doesn’t eat up half the backyard.
A well-placed outdoor spiral staircase gives you a direct path between your deck and yard, garden, hot tub area, or lower patio. It takes a fraction of the horizontal space a traditional straight-run staircase requires, which is a real benefit on smaller lots across Denver, Aurora, and mountain communities like Evergreen.
All outdoor units use corrosion-resistant metals, weather-rated finishes, and slip-resistant treads. We design for drainage so water and snowmelt don’t pool on the steps.
Ideal for: Elevated decks, hillside lots, rooftop access, second-story walkouts, hot tub and patio connections.
Indoor spirals turn a functional connection between floors into something guests actually notice. They’re a strong fit for loft access, basement entries, library nooks, or any interior space where a full staircase would dominate the room.
Because the stairs are protected from weather, you have more freedom with materials. Hardwood treads, wrought iron railings, sleek steel center columns, and custom powder-coat colors are all on the table. We match the staircase to your home’s interior style, whether that’s modern mountain, traditional, or something in between.
Ceiling height, floor-to-floor measurement, and opening size determine the diameter and rotation. We map all of this during the site evaluation.
Ideal for: Loft access, basement entries, split-level connections, reading nooks, studio spaces, and compact floor plans.
Indoor spirals turn a functional connection between floors into something guests actually notice. They’re a strong fit for loft access, basement entries, library nooks, or any interior space where a full staircase would dominate the room.
Because the stairs are protected from weather, you have more freedom with materials. Hardwood treads, wrought iron railings, sleek steel center columns, and custom powder-coat colors are all on the table. We match the staircase to your home’s interior style, whether that’s modern mountain, traditional, or something in between.
Ceiling height, floor-to-floor measurement, and opening size determine the diameter and rotation. We map all of this during the site evaluation.
Ideal for: Loft access, basement entries, split-level connections, reading nooks, studio spaces, and compact floor plans.
This is where our background as full-service deck builders really shows. A deck-integrated spiral staircase is designed alongside the deck itself, sharing structural framing, matching materials, and sitting flush with the deck surface.
Instead of bolting a staircase onto a finished deck after the fact, we engineer both systems together. The result looks intentional, performs better structurally, and avoids the awkward transitions you see when stairs are added.
We coordinate railing style, tread material, and finish color so everything reads as one unified project. If your deck includes a pergola, patio cover, or built-in lighting, the staircase flows with all of it.
Ideal for: New deck builds, deck replacements, multi-level decks, and outdoor entertaining spaces.
Materials & Customization
Here's exactly what happens from the first phone call to the final walkthrough.
The most versatile and popular choice for both indoor and outdoor spiral staircases in Colorado
Warm, natural, and a favorite for indoor installations and covered outdoor areas.
The most versatile and popular choice for both indoor and outdoor spiral staircases in Colorado
Warm, natural, and a favorite for indoor installations and covered outdoor areas.
Engineered treads that resist fading, splitting, and moisture. Very little upkeep required.
Combine steel structure with wood or composite treads for a look that’s uniquely yours.
Engineered treads that resist fading, splitting, and moisture. Very little upkeep required.
Combine steel structure with wood or composite treads for a look that’s uniquely yours.
Our Process
Your material choice affects how the staircase looks, holds up, and how much upkeep it needs over time. Here's what we work with and why each option makes sense.
We talk through your goals, timeline, and budget. You tell us where you want the staircase and how you plan to use it. We ask the questions that shape the design.
We visit your property to measure the space, assess structural conditions, and photograph the area. This visit tells us what's possible and what needs engineering review.
Our team draws up the staircase layout, confirms load paths, and finalizes connection details. If the staircase ties into a deck or balcony, we plan those connections too.
You choose your materials, finishes, tread style, and railing design. We walk you through options that fit your home's look and Colorado's weather demands.
We prepare and submit permit applications to your local building department. Denver, Boulder, Castle Rock, and other municipalities each have their own process, and we handle it.
Once permits are approved, fabrication begins. Components are built to your exact specs. Lead times depend on material and complexity, and we keep you updated throughout.
Our crew installs the staircase on-site. Most residential spiral stairs go in within 1 to 3 days. We protect your property, manage debris, and keep the site clean.
We schedule the required building inspection, walk through the finished staircase with you, and confirm every detail meets code and your expectations before we close out the project.
Codes & Permits
Installing a spiral staircase in Colorado typically requires a building permit and at least one inspection. The specifics vary by city and county, but here’s the general picture.
Residential spiral staircases are subject to the International Residential Code (IRC), which most Colorado municipalities adopt with local amendments. Key areas the code addresses include minimum tread width, consistent riser height, headroom clearance, handrail height, and baluster spacing.
Your local building department will review plans before issuing a permit. Some cities require engineered drawings; others accept detailed construction plans. We prepare all documentation and submit on your behalf.
Note: Code requirements and permitting processes may vary by city and county. The information here is general guidance, not legal or code advice. We recommend confirming specific requirements with your local building department.
Permit required for structural additions. Plan review typically takes 2 to 4 weeks.
Online permit portal available. Inspections scheduled after installation.
Stricter land-use rules in some zones. Plan review may include environmental considerations.
County-level permitting applies. Hillside and wildfire zone setbacks may affect placement.
Town building department reviews applications. HOA approval may be required separately.
If your property is in an HOA community, architectural review board approval is usually a separate step. We can help you prepare the submission documents, though the HOA approval timeline is outside our control.
Our Work
Every project below started with a conversation. Take a look at how we’ve helped Colorado homeowners add spiral staircases to their homes, decks, and outdoor living spaces.
Service Areas
We design and install spiral staircases for homeowners throughout Colorado’s Front Range and into the foothills. If you’re in or near any of these communities, we’d love to talk about your project.
Beyond Spiral Staircases
Here are the other services we offer to complete your project or improve a space you already have.
New decks designed and built for Colorado's climate, your lot, and how you actually use your outdoor space.
Solid roof covers that protect your outdoor area from rain, snow, and direct sun. Extend your usable season by months.
Railing systems designed to complement your staircase and deck while improving safety, visibility, and overall appearance.
Open-air shade structures that frame your deck or patio. Great paired with a spiral staircase for multi-level outdoor layouts.
Integrated LED lighting for stairs, railings, and deck surfaces. Adds safety and atmosphere after dark.
Structural fixes, board replacements, and refinishing for aging decks. We can repair your existing structure before adding new features.
Common Questions
Most residential spiral staircases fit within a 5-foot diameter footprint, though some compact models start around 42 inches wide. The exact space depends on your ceiling height, intended use, and local code requirements. During our site evaluation, we’ll measure your available area and recommend a diameter that works for both comfort and compliance.
Yes. Modern spiral staircases are engineered with consistent riser heights, slip-resistant treads, and code-compliant handrails. We install every staircase to meet or exceed Colorado residential building codes, and we add features like textured treads and secure balusters for extra confidence on every step.
Most residential spiral staircase installations take 1 to 3 days once materials arrive on-site. The full project timeline, including design, permitting, and fabrication, typically runs 4 to 8 weeks. Custom builds with specialty finishes or complex structural connections may take longer.
In most cases, yes. We evaluate the structural capacity of your existing deck framing to confirm it can support the staircase and foot traffic. If reinforcement is needed, we handle that as part of the project. Spiral stairs are popular additions to second-story decks across Colorado because they save space compared to traditional straight-run stairs.
Absolutely. We specify materials and finishes rated for Colorado’s freeze-thaw cycles, heavy snow loads, intense UV exposure, and altitude-related dryness. Hot-dip galvanized steel, powder-coated aluminum, and composite treads all perform well at elevation. We also factor drainage and snow shedding into every outdoor staircase design.
Every spiral staircase we install is built to your specifications. You choose the material, finish color, tread style, railing design, and diameter. We work with steel, aluminum, wood, and composite materials, and we can match or complement your existing deck, railing, or home exterior for a cohesive look.
The main differences are material selection and weather resistance. Outdoor spiral staircases use corrosion-resistant metals, UV-stable finishes, and slip-resistant treads designed for rain, snow, and sun exposure. Indoor spiral stairs offer more material flexibility, including hardwoods and decorative metals, since they’re protected from the elements.
Tell us about your space, your ideas, and how you want to move between levels. We’ll take it from there with a site visit, a custom design, and a clear plan to bring it to life.
