Designing a Modern Glass Wine Closet: Real Project, Real Cost, and What You Need to Know

Andre Trabazos of Coastal Custom Wine Cellars, converted a storage closet to a modern glass wine closet for a client. It was a contemporary home with a lavish interior design. Andre knew that he had to build something special to add more flare to this client’s home. In this case, the client prioritized aesthetics over capacity for his wine cellar. Continue reading to learn more about this project. 

What Is a Wine Closet?

A wine closet is a small, dedicated wine storage space — typically a converted closet, pantry, or under-stairs nook — outfitted with wine racking, insulation, and a climate control system so bottles can be stored (and often aged) at the correct temperature and humidity. It’s a middle ground between a standalone wine refrigerator and a full walk-in wine cellar:

• Wine refrigerator: A plug-and-play appliance. No renovation, no insulation, holds a limited number of bottles, and can be moved if you relocate.
• Wine closet (this page): A built-in conversion of existing closet space — insulated, climate-controlled, and racked out, usually holding anywhere from 100 to 500+ bottles depending on the footprint.
• Full wine cellar: A larger dedicated room, often in a basement, with more elaborate racking, flooring, and finish work — and a correspondingly higher cost and build timeline.

Most homeowners who search for “wine closets” are trying to figure out which of these three fits their space, budget, and collection size — this page walks through a real glass wine closet project, plus the general cost and planning answers that apply beyond this specific job.

Overview of the Design Process and Construction of the Modern Glass Wine Closet  

This modern wine cellar looks amazing with its double-paned tempered glass doors.

The client had previously hired Andre for a different project for his home. He wanted to build a wine cellar close to his dining area. His familiarity with the process, artistry, and professionalism of Andre’s team made the communication for this modern glass wine closet project seamless.  

The final design for the modern glass wine closet took about two weeks. This is a quick time frame as it could take months for planning alone for some projects. Planning for your wine cellar shouldn’t be rushed. And, the final design should always resonate with the ideal wine cellar that you have in mind. 

During construction, the homeowner made several changes to the surrounding space, which meant the original wine closet plans had to evolve as well. Rather than seeing it as a setback, Andre viewed it as part of the custom design process.

“Every custom project has its surprises,” Andre recalls. “As the homeowner refined other parts of the house, we adapted the wine closet design to fit those changes while staying true to the original vision. That’s the advantage of building something completely custom.”

Despite the adjustments, construction was completed in approximately six weeks.

Contemporary Wine Racking System with Beautiful Back Panel 

The majority of the home was built with white oak. To complement the oak-inspired interior, the team stained a similar color for the wooden parts of the modern wine cellar. In this case, the wooden parts are the left and right panels of the wine room. Three columns of triple-deep metal wine racks from Vintage View were mounted on these wooden panels. These racks were designed to display the wine labels forward. 

But what’s truly eye-catching are the mirror tiles installed in the center of the wine closet. The team spent quite a bit of time installing this beautiful and luminous panel. Once done, it gave emphasis and visual to the center of the wine room. For the central panel, the team installed wine shelves as Andre saw that this would be the best way to present the wine for this area. The client will display select wines here, so upon entering the modern glass wine cellar, you can easily see all his exquisite wines in the center. 

“One of my favorite aspects of this project is how the materials complement each other,” Andre says. “The warmth of the wood keeps the space feeling inviting, while the metal racks give it a clean, contemporary edge. It’s a combination that appeals to homeowners who appreciate both traditional craftsmanship and modern design.”

Dimmable Wine Cellar Lighting 

The team strategically installed 2″ recessed can lights on the ceiling. Andre opted to use LED light bulbs so they won’t emit any extra heat that could potentially ruin wines in storage. Another feature of the lighting is that you can adjust its brightness. If the client wants a bright light to highlight his wine collection, he can adjust the level to his desired brightness. If he instead wants a more mellow ambient background light coming from the wine cellar, he could also accomplish this by adjusting the dial. The control panel for the lightning was installed so that the client could easily adjust the brightness without going inside the wine cellar. 

Efficient Cooling System for the Modern Wine Cellar  

The wooden grille enclosure removes the presence of any unsightly evaporating coils inside the wine room.

The Coastal team did a heat load calculation before they started installing a cooling system for the wine cellar. Then, Andre advised the client to install a split-type cooling unit for the wine cellar based on the heat load calculation. A split-type cooling system has separate components for the condenser and the evaporator. 

For this project, the evaporator was placed on the ceiling. Then, it was covered with a wooden grille. In this sort of system, the condenser is placed outside the home. This type of cooling system produces minimal to no noise inside the wine cellar.  

And finally, to optimize the cooling system efficiency of the wine cellar, the team installed a double-paned glass for its doors and outer walls. Gaskets come in contact with both glass doors when closed. This mechanism ensures that there will be no leakage or any external temperature penetrating the interior of the wine room. 

“People often assume glass doors are the weak point of a wine cellar,” Andre says. “When they’re engineered correctly with insulated glass and quality gaskets, they seal just as effectively as a solid door while still giving you the open, contemporary look homeowners love.”

What Temperature and Humidity Does a Wine Closet Need?

The split-system cooling setup used in this project keeps the closet within the range that matters for wine storage generally:

• Temperature: 50–55°F is ideal for long-term storage; consistency matters more than hitting an exact number — swings are what damage wine, not a degree or two of variance.
• Humidity: 50–70% relative humidity, with 60% commonly cited as the sweet spot — enough to keep corks from drying out without encouraging mold.
• Insulation and vapor barrier: Any wine closet conversion needs insulated walls, floor, and ceiling, plus a vapor barrier, to keep the cooling system from fighting outside temperature and humidity swings. This is doubly important for closets that share a wall with a kitchen, laundry room, or garage.
• Door seals: Double-paned glass doors (as used in this project) with gaskets at all contact points prevent both temperature leakage and condensation at the seams.

How Much Does a Wine Closet Cost to Build?

Costs vary by size, finish level, and cooling system, but here’s a general range based on projects like this one and typical industry figures:

The biggest cost drivers are: cooling system type (a through-the-wall unit is cheaper than a ducted split system, but not always usable depending on ventilation), racking material (metal vs. custom wood), and door/glass specification (single-pane vs. double-paned tempered glass, as used in this project).

Want a number specific to your space? Get a free 3D design and cost consultation.

Overview of the Modern Glass Wine Closet Built by Coastal Custom Wine Cellars 

Mirror tiles adds elegance and sophistication to the contemporary glass-enclosed wine cellar.

The completed modern glass wine closet demonstrates how thoughtful design and careful craftsmanship can transform a compact space into a striking architectural feature. While the client prioritized aesthetics over maximum bottle capacity, the finished wine closet delivers both visual impact and ideal storage conditions for a carefully curated collection.

Every design element serves a purpose. The combination of warm wood panels, label-forward metal wine racks, and the mirrored feature wall creates depth and balance while putting the wine collection on full display. Wine pegs along the side panels give individual bottles the appearance of floating, while the central display shelves showcase the client’s most prized selections, creating an elegant focal point that is visible from the adjoining dining area.

Behind the refined appearance is a climate-controlled environment designed to preserve every bottle properly. The split-system cooling unit operates quietly while maintaining consistent storage conditions, and its concealed installation keeps the focus on the wine collection rather than the mechanical components. Combined with insulated construction and double-paned glass doors, the system provides reliable temperature control without compromising the clean, contemporary aesthetic.

The adjustable LED lighting completes the design by allowing the homeowner to tailor the ambiance for any occasion. Whether brightly illuminated to showcase the collection or dimmed to create a warm, inviting atmosphere during gatherings, the lighting enhances both the functionality and visual appeal of the space.

This project is an excellent example of how a custom glass wine closet can become far more than a place to store wine. With the right combination of design, craftsmanship, and climate control, even a modest footprint can become a sophisticated focal point that complements the home’s architecture while protecting a valuable wine collection.

Common Mistakes to Avoid When Converting a Closet Into a Wine Closet

1. Skipping the vapor barrier. Without one, humidity from the rest of the house migrates into the closet and forces the cooling system to work overtime — or fails to maintain a stable environment at all.
2. Poor ventilation for through-the-wall cooling units. These units vent hot exhaust air into an adjacent room. If that room isn’t well-ventilated and stays below roughly 80°F, the unit will struggle and run inefficiently.
3. Placing the closet against a kitchen or laundry wall. Heat from ovens, dryers, and refrigerators forces the cooling system to run constantly, driving up both wear and electricity cost.
4. Using standard shelving depth. Wine racking needs roughly 12–14 inches of depth — existing closet shelving is almost always too shallow.
5. Single-pane doors or poor seals. Without double-paned glass and proper gaskets, temperature and humidity leak at the door, which is exactly what happened to be engineered around correctly in this project.

Frequently Asked Questions About Wine Closets

How much does it cost to convert a closet into a wine closet?

Most closet conversions run $5,000–$15,000 for a basic build with modular racking and a through-the-wall cooling unit, and $15,000–$30,000+ for a fully custom build with upgraded finishes, custom racking, and a split cooling system.

Can any closet be converted into a wine closet?

Most closets can, provided they can be properly insulated and don’t share a wall with a heat source like a kitchen or laundry room. Very small or oddly-shaped closets may limit racking capacity but can still work for a display-focused space.

What size closet do I need for a wine closet?

There’s no strict minimum, but a closet at least 3–4 feet wide and deep enough for 12–14″ racking will comfortably hold 100+ bottles. Larger reach-in or walk-in closets can hold 250–750+ bottles depending on racking configuration.

Do I need a professional cooling system, or can I use a regular fridge?

A dedicated wine cooling unit (through-the-wall or split system) is built to maintain stable temperature and humidity for long-term storage. A standard refrigerator is too dry and too cold for aging wine, though it can work for short-term storage of a small collection.

Is a wine closet loud?

Not if it’s specified correctly. Split-system cooling (used in this project) separates the noisy condenser from the closet itself, keeping the space essentially silent — a common concern for closets located near living or dining areas.

How long does a wine closet conversion take?

Design typically takes one to several weeks depending on complexity, and construction usually runs 4–8 weeks. This project’s design phase took about two weeks, with construction completed in six weeks.