How much do onyx countertops cost?
How much do onyx countertops cost?
$50 – $200 cost per square foot installed
$1,500 – $8,000 average total cost installed (30 – 40 SF)
Onyx countertop cost
Onyx countertops cost $50 to $200 per square foot with installation or $1,500 to $8,000 total on average, depending on the color and slab size. Onyx is a type of translucent stone that can be used as a kitchen counter or bathroom vanity. Popular colors include green, black, and tan.
| Kitchen size | Countertops square footage | Average cost installed |
|---|---|---|
| Small kitchen (70 – 100 SF) | 20 – 30 | $1,000 – $6,000 |
| Average kitchen (100 – 200 SF) | 30 – 40 | $1,500 – $8,000 |
| Large kitchen (200+ SF) | 40 – 60 | $2,000 – $12,000 |
Onyx countertop prices per square foot
Onyx countertop prices are $40 to $150 per square foot for materials only and $50 to $200 per square foot with installation. The following options may increase final costs:
Edge cut – Countertop edge designs typically cost extra. Square and no-drip edges are the cheapest, while Ogee and Dupont are the most expensive options.
Sealing – Countertop installers typically charge $100 to $300 total or $2 to $7 per square foot to seal porous onyx counters.
Removing existing counters – Many contractors include old countertop removal and disposal in their estimate, while some charge up to $10 to $15 per square foot for this service.
Onyx countertop colors
Onyx comes in a variety of colors and patterns, including:
Green
Black / Gray
Tan / Brown
Cream / Off-white
Pink
Red
Cost to install onyx countertops
| Item | Cost per square foot | Average cost (30 – 40 SF) |
|---|---|---|
| Onyx slab materials | $40 – $150 | $1,200 – $6,000 |
| Labor to fabricate & install | $10 – $50 | $300 – $2,000 |
| Total cost to install | $50 – $200 | $1,500 – $8,000 |
The following factors affect the installation cost:
Made-to-order – Custom or cut-to-order countertops cost more than prefabricated counters.
Cutouts – Contractors cut holes in countertop materials for a sink, faucet, cooktop, or outlet. Some prefab countertops come with pre-cut holes.
Plumbing disconnect –A plumber or the countertop installer may need to disconnect and reconnect existing sections of plumbing. Plumbers charge $45 to $150 per hour.
Sink installation – A sink replacement costs $330 to $1,300 with labor, materials, and old sink removal.
Underlayment and reinforcement – Onyx countertops typically come with a fiberglass underlayment for added strength.
Cabinet leveling – Kitchen or bathroom cabinets may require adjustment in order to support the weight of the onyx.
Cooktop – Cooktop installation costs $700 to $1,600 for labor and materials.
Backsplash / end splash – Adding a matching onyx backsplash or end splash costs extra. A traditional tile backsplash costs $10 to $50 per square foot, including labor and materials.
Cost of onyx countertops installed by location
| Surface | Size (inches) | Average cost installed |
|---|---|---|
| Small kitchen counter (each) | 25 x 100 | $850 – $3,400 |
| Average kitchen counter (each) | 25 x 170 | $1,500 – $5,900 |
| Kitchen island | 40 x 80 | $1,100 – $4,400 |
| Small kitchen island | 24 x 48 | $400 – $1,600 |
| Bathroom vanity top | 20 x 36 | $250 – $1,000 |
| Bar top | 16 x 36 | $200 – $800 |
| Bathroom tile flooring | 60 x 96 | $2,000 – $8,000 |
| Kitchen tile flooring | 120 x 120 | $5,000 – $20,000 |
Because onyx is translucent, it works well in backlit spaces.
Onyx countertop prices vs. quartz, granite, & marble
Onyx countertops cost $1,500 to $8,000 on average with installation, compared to the average cost of countertop installation at $1,500 to $6,000 for other materials.
Compare the installed cost of onyx countertops with the cost of other popular materials:
| Countertop material | Cost per square foot installed | Average total cost installed (30 – 40 SF) |
|---|---|---|
| Onyx countertops cost | $50 – $200 | $1,500 – $8,000 |
| Granite countertops cost | $80 – $150 | $2,400 – $6,000 |
| Quartz countertops cost | $50 – $200 | $1,500 – $8,000 |
| Marble countertops cost | $40 – $150 | $1,200 – $6,000 |
| Solid surface countertops cost | $50 – $150 | $1,500 – $6,000 |
| Butcher block countertops cost | $50 – $150 | $1,500 – $6,000 |
Pros and cons of onyx countertops
| Pros | Cons |
|---|---|
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Frequently asked questions
What are onyx countertops?
Onyx is a natural stone made mostly of calcite. Because it is more translucent than other stones, it provides a smooth and reflective finish that accentuates lighting. Onyx countertops come in a variety of colors and unique patterns.
Can you use onyx for kitchen countertops?
Yes, you can use onyx for a kitchen countertop. However, it requires regular maintenance and is not as durable as other materials. Onyx may be better suited to a bathroom or backsplash.
Where to buy onyx countertops?
You can buy onyx countertops online or from specialty countertop stores. Because onyx is a less-common premium material, stores like Home Depot and Lowe's typically do not sell it.
How long do onyx countertops last?
Onyx countertops last 100+ years if properly maintained.
Getting estimates from onyx countertop installers
Before hiring an onyx countertop installation companies near you, make sure to:
Get at least three detailed estimates to compare.
Look for a National Stone Institute (NSI) accredited contractor specializing in onyx countertop installation.
Check reviews on HomeGuide and Google.
Hire a licensed, bonded, and insured company that has been in business 5+ years.
Ask for references with contact information.
Ask for a portfolio of previous onyx countertop installations.
Get a detailed contract and warranty in writing before the project starts.
Follow a payment plan instead of paying in full before the job is complete.
Questions to ask
What experience do you have with onyx countertop installation?
Are you NSI-accredited?
Are you licensed, bonded, and insured?
What does the quote include?
What added costs might I expect?
How long will the installation take?
Does this installation require a permit? If so, will you handle it?
How would you handle any damages that happen on the job?
Do you require a deposit? If yes, how much is it?
Do you offer a warranty? If so, what does it include?