The Best Plumbing Contractors in Boulder, CO

Compare the highest-rated plumbing professionals in Boulder, Colorado. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

ABC Plumbing & Rooter

4.8
(280 reviews)
Verified

A family-owned and operated business known for its rapid response, especially for emergency services. They have built a strong reputation on honesty, upfront pricing, and high-quality workmanship for both residential and commercial clients. They are often praised for their clean, professional technicians and their ability to handle complex jobs.

1755 S Public Rd, Lafayette, CO 80026 (Serves Boulder extensively)

Specialties & Features

Emergency plumbing repairs
Drain cleaning and sewer services
Water heater installation and repair

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#2

PlumbSmart Plumbing & Drain

4.9
(150 reviews)
Verified

PlumbSmart is a local, veteran-owned company highly regarded for its technical expertise and customer service. They focus on building long-term relationships with homeowners and businesses through educational, no-pressure service calls. Their reviews consistently highlight their professionalism, clear communication, and problem-solving skills.

795 S McCaslin Blvd, Louisville, CO 80027 (Serves the entire Boulder area)

Specialties & Features

Leak detection and repair
Bathroom and kitchen plumbing
Pipe installation and replacement

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
#3

Flatirons Plumbing & Heating

4.7
(90 reviews)
Verified

As a dedicated local Boulder contractor, Flatirons Plumbing & Heating has deep roots in the community. They offer a full suite of plumbing services with a focus on sustainable and efficient solutions, which resonates well with the Boulder market. Their expertise extends to both standard repairs and custom new installation projects.

633 S 44th St, Boulder, CO 80305

Specialties & Features

Residential and commercial plumbing services
Water heater installation and repair
Bathroom and kitchen plumbing

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes

Why These Are the Top Plumbing Contractors in Boulder

** The plumbing market in Boulder, Colorado, is characterized by high demand, strong competition, and a customer base that values quality, reliability, and eco-friendly solutions. The overall quality of service providers is very high, driven by an educated and discerning clientele. Due to Boulder's older housing stock mixed with new, high-end construction, plumbers must be versatile in handling everything from historic home repairs to modern, high-efficiency system installations. **Competition Level:** Intense. The market features a mix of long-standing local companies, larger regional players, and individual contractors. To succeed, companies must maintain excellent online reviews and community trust. **Typical Pricing:** Pricing in Boulder is generally higher than the national average. This reflects the high cost of living, stringent local building codes, and the premium placed on skilled, licensed, and insured tradespeople. Customers can expect to pay a premium for emergency or after-hours services. It is standard practice for reputable companies to provide clear, upfront estimates before beginning work. **Key Trends:** There is a significant focus on water conservation, with high demand for tankless water heaters, low-flow fixture installation, and leak detection services to prevent water waste. The market also shows a strong preference for local, owner-operated businesses over large national franchises.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Boulder regulations and climate

Frequently Asked Questions About Plumbing in Boulder

Get answers to common questions about plumbing services in Boulder, Colorado.

1How does Boulder's climate and hard water affect my plumbing, and what maintenance is recommended?

Boulder's mineral-rich water is notoriously hard, leading to accelerated scale buildup in pipes, water heaters, and fixtures, which reduces efficiency and lifespan. The freeze-thaw cycles, especially with our sudden spring and fall temperature drops, also stress pipes and increase the risk of cracks and leaks. We recommend installing a whole-house water softener to combat scale and scheduling annual plumbing inspections in the early fall to winterize outdoor spigots and check for vulnerabilities before freezing temperatures hit.

2What should I expect to pay for common plumbing services in Boulder, and why are prices sometimes higher here?

Service costs in Boulder are often higher than national averages due to local business costs, stringent City of Boulder plumbing codes that may require specific materials or techniques, and the expertise needed for older homes with unique foundations. For example, a standard water heater installation typically ranges from $1,800 to $3,500+, while emergency leak repair can start at $300 just for the service call. Always request a detailed, written estimate that includes permits if required by the city.

3When is the best time to schedule non-emergency plumbing work in Boulder?

The ideal times are late spring and early fall. Winter is peak season for emergency freeze-related bursts, leading to longer wait times for non-urgent jobs. Summer is busy with new construction and irrigation work. Scheduling in the shoulder seasons (May-June or September-October) typically offers better availability and allows you to proactively address issues before the harsh winter, which is critical for preventing costly emergencies.

4What should I look for when choosing a plumber in Boulder, and are local licenses required?

Absolutely verify that the plumber holds a current City of Boulder business license and a Colorado state plumbing license, which ensures they are bonded, insured, and knowledgeable about local codes. Given Boulder's mix of historic and modern homes, look for a provider with specific experience in your home's type (e.g., slab foundations in newer developments or older clay pipe systems). Check reviews for responsiveness during our busy winter seasons and clarity on pricing.

5My basement drain is backing up. Is this a common issue in Boulder, and what are the likely causes?

Yes, this is very common, particularly in older Boulder homes with original clay sewer lines that are prone to root intrusion from mature trees and cracking from soil movement. Additionally, the city's main sewer lines in some neighborhoods can be older and may contribute to backups during heavy rain or snowmelt. A professional should perform a camera inspection to determine if the blockage or damage is on your property line (your responsibility) or in the city main, as this dictates who is responsible for repair.