Cost for fireplace installation

Looking for cost for fireplace installation in St. Louis, MO? Call FireplaceInstallation Solutions for a contact a provider — no obligation. Licensed, insured certified fireplace pros serve St. Louis and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

Local housing snapshot: St. Louis, MO

Population: about 293,000
Median year homes were built: 1938
Homes built before 1980: 86%
Owner-occupied homes: 45%

Older homes can mean different materials, wiring, venting or permit needs. Mention your home's age when you contact a provider.

Source: U.S. Census Bureau, American Community Survey 2019–2023 5-year estimates.

What affects the price

When you start planning a fireplace installation, the final bill depends on a few major factors. Choosing between a simple electric unit, a gas insert, or a full wood-burning masonry build creates the biggest difference in cost. You also have to consider the existing setup of your home; running new gas lines or venting through a roof will naturally add labor hours compared to a straightforward swap. Finishing materials like custom stonework or mantel pieces also shift the total.

About this service

Installing a fireplace involves more than just the appliance; it includes venting, gas hookups, and framing. If your home already has a fireplace, replacing it is often cheaper than adding one where none existed before. The final bill is driven by the type of fuel source and the finish work around the hearth.

Most people do not think about fireplaces in the summer, which makes it the best time for a stress-free installation. You will likely find more convenient appointment times and faster project turnaround. It is the perfect window to handle masonry or venting work while the weather is dry and clear, keeping the process clean and efficient for your home.

Frequently asked in St. Louis

What's the average cost to install a fireplace?

Can I install a fireplace myself?

For most fireplace installations in St. Louis, especially those involving gas lines or new chimney construction, professional installation is essential. This ensures compliance with building codes and maximizes safety by preventing potential fire hazards or ventilation issues. It's a job best left to the experts.

How do you install a fireplace?

Professional fireplace installation involves preparing the space, safely integrating the unit, and ensuring proper venting for smoke and combustion gases. For gas fireplaces, this includes secure gas line connections. Licensed installers follow strict safety protocols to ensure everything is up to code.

How much does it cost to install a fireplace?

Do fireplaces need to be professionally installed?

What is the 2 + 10 rule for fireplaces?

The 2+10 rule is a critical safety standard for chimney construction. It dictates that a chimney must extend at least two feet higher than the highest point of the building it passes through, and also be at least ten feet away horizontally from any part of the structure. Professionals ensure adherence to this rule.

Also serving nearby: O Fallon · Springfield · Columbia · Champaign · Peoria

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More on this: NFPA heating safety — heating equipment fire data.