Best Sewer Line Replacement Pros in Longmont
#1Strong Hire
Garvin's Plumbing and Sewer
4.9Sewer Line Replacement: 90/100
“We had our line backup again about a week after their most recent visit and the return visit was covered under the conditional warranty they offer on their services.”
#2Strong Hire
Rooter Brothers Plumbing LLC
4.6Sewer Line Replacement: 85/100
“Affordable, fast, and great work! Jesus and his family replaced my sewer pipe next day after I called.”
#3Strong Hire
Big Apple Plumbing LLC - Broomfield, CO
5Reviewed for sewer line replacement
“Jason was super helpful in his advice that a recently bought toilet had an hairline crack. Suggested I have the store replace the tank and install myself. Defective tank replaced and installed. No charge from Jason”
All Sewer Line Replacement Pros in Longmont
Garvin's Plumbing and Sewer
4.9·79 reviews·
18 mi away — Edge of service areaGoogle Verified
+4 more
Top pick4.9Google
Strengths
Sewer and drain work is the core specialty
Conditional warranty covers return visits
No-pressure diagnosis with care for the home
Preliminary listing — full review analysis coming soon
Rooter Brothers Plumbing LLC
4.6·19 reviews·
19 mi away — Edge of service areaGoogle Verified
+3 more
Top pick4.6Google
Strengths
Sewer line replacement done next day after the call with minimal…
Quote held — final invoice matched original estimate with no…
Honest recommendation to replace rather than repair
Preliminary listing — full review analysis coming soon
Big Apple Plumbing LLC - Broomfield, CO
5·505 reviews·
17 mi away — Edge of service areaGoogle Verified
+4 more
Top pick5.0Google
Strengths
After-hours water heater rescue
Same-day dispatch confirmed
Honest no-charge call
Concerns
Same-day pricing flagged as fairly expensive on at least one job…
Planet Plumbing & Drain
4.6·443 reviews·
14 mi away — Serves your areaGoogle Verified
Proceed with care4.6Google
Strengths
Warranty honored on prior work
Sunday burst-pipe response confirmed
Tough-job specialist Mike 'Steedo' removed a rock, a marble, and…
Concerns
Receptionist reportedly 'impatient and rude'
Long-time customer says business 'is going downhill' after a…
Toilet reseat ran $100 over quote and had to be redone by another…
Flatirons Plumbing
4.8·634 reviews·
14 mi away — Serves your areaGoogle Verified
+1 more
Solid pick4.8Google
Strengths
Sunday emergency availability
No-concrete-break sewer line and fresh water line replacements
Concerns
Sewer-scope reviewer alleges $10,000+ recommendation for line…
Apprentice (not licensed plumber) quoted $900 to replace a…
$1,300 quoted for a kitchen sink disposal + PVC install the…
$1,250 charged for less than 4 hours of faucet/piping work
Afford A Rooter Plumbing
4.2·173 reviews·
19 mi away — Edge of service areaGoogle Verified
+3 more
Avoid4.2Google
Strengths
Fixed problems other plumbers couldn't
Crews replaced a 172-foot water line from street to house without…
Video documentation of work is detailed
Concerns
Sewer-scope allegation: reviewer claims tech tried to bilk $8,500…
Septic pump/inspection job went sideways
Receptionist described as 'shockingly rude and unprofessional'
Multiple no-callbacks reported
Precision Plumbing Heating Cooling Electric
4.8·4.1k reviews·
14 mi away — Serves your areaGoogle Verified
+1 more
Solid pick4.8Google
Strengths
Reviewers repeatedly name individual techs (Tyler, Rick, Dino,…
17 of 93 sampled reviews call out fast response
Water-heater maintenance quoted at a flat $49 in at least one…
Concerns
A Yelp 1-star reviewer accused the plumber of putting a Precision…
Same reviewer says the slow drain she called about was left…
8 of 93 reviews flag pricing as expensive
One reviewer reported a tech wearing strong fragrance that…
Planet Plumbing & Drain
4.5·75 reviews·
In LongmontGoogle Verified
Proceed with care4.5Google
Strengths
Sunday burst-pipe response
Saved a sewer-line customer when a competitor ghosted
Drain repair came in under estimate
Concerns
Receptionist flagged as 'impatient and rude'
One customer charged $200 for a 5-minute fix after being told…
Itemized receipts reportedly refused
Colorado Green Plumbing, Heating & Cooling
4.9·80 reviews·
13 mi away — Serves your areaGoogle Verified
+3 more
Top pick4.9Google
Strengths
Same-day water heater replacement quoted 40% cheaper than larger…
Free, written, competitive bid for water heater work with…
Quick pilot-light coaching
Concerns
Small sample of 70 reviews and 80 total Google reviews
Lewis Brothers Plumber & HVAC
4.8·95 reviews·
12 mi away — Serves your areaGoogle Verified
+4 more
Top pick4.8Google
Strengths
Beat 3 competing quotes on a leaky tub faucet
Same-day emergency leak response
Slab-leak work without ripping up the floor
Concerns
5 of 99 sampled reviews call out pricing as expensive even on…
Phone troubleshooting before billing
Premier Plumbing & Drain Lafayette
5·17 reviews·
12 mi away — Serves your areaGoogle Verified
Solid pick5.0Google
Strengths
Faucet swap finished in about 40 minutes with attention to detail…
Same-hour leak response
Concerns
Sample size is only 17 total reviews and several read as short or…
Limelight Services
5·1.6k reviews·
17 mi away — Edge of service areaGoogle Verified
+2 more
Top pick5.0Google
Strengths
Same-day basement leak rescue
Mini-split diagnostics
Sunday phone callback and scheduling confirmed
Concerns
Garbage disposal swap took longer than expected and review notes…
Around the Clog, LLC
4.8·322 reviews·
11 mi away — Serves your areaGoogle Verified
+1 more
Solid pick4.8Google
Strengths
Beat a $1,700 leak quote
Tankless water heater install with no upsell
Middle-of-the-night emergency response
Concerns
1-star review describes phone interaction as argumentative and…
$370 charged for a leaky faucet repair where the customer says…
Benjamin Franklin Plumbing of Denver
4.8·3.0k reviews·
18 mi away — Edge of service areaGoogle Verified
Solid pick4.8Google
Strengths
Techs arrive on time, use shoe covers, and leave the work area…
Fast emergency water heater response
Walks customers through options without pressure and explains…
Concerns
Supervisor Omar reportedly told a delayed customer to 'deal with…
Surprise fees flagged on a quote labeled as a plumbing inspection
Quotes can run high — one reviewer was charged $3,998 to install…
Scheduling communication breaks down when techs run late
Bernie's Plumbing & Heating Company
4.9·440 reviews·
12 mi away — Serves your areaGoogle Verified
+4 more
Top pick4.9Google
Strengths
Consistently excellent workmanship across multiple service types…
Fair pricing and no upselling—one reviewer explicitly praised…
Fast turnaround on work completion noted by 2 reviewers
Exceptional knowledge and attention to detail, particularly on…
Preliminary listing — full review analysis coming soon
Common Sewer Line Replacement Scenarios
Full Sewer Line Replacement
When the entire sewer line from your home to the street needs replacing due to age, material failure, or extensive damage.
Trenchless Pipe Bursting
A new pipe is pulled through the old one, breaking it apart. Minimal yard disruption compared to traditional excavation.
Cured-in-Place Pipe Lining
An epoxy-coated liner is inserted and cured inside the existing pipe, creating a new pipe within the old one.
Conventional Excavation
The traditional method: dig a trench, remove the old pipe, lay a new one. Sometimes the only option for severely collapsed lines.
Frequently Asked Questions
How much does sewer line replacement cost in Longmont, CO?
Full sewer line replacement in Longmont typically costs $3,000-$25,000. Trenchless methods run $4,000-$10,000 on average. Traditional excavation with yard restoration can exceed $15,000. Length of the line, depth, and access all affect pricing.
How long does sewer line replacement take?
Trenchless sewer replacement typically takes 1-2 days. Traditional excavation takes 3-5 days plus yard restoration time. Most plumbers in Boulder County can start within a week of the initial inspection.
Is trenchless sewer replacement worth it in Longmont?
Trenchless is usually worth it if your yard has landscaping, driveways, or structures over the sewer line. It costs more than basic excavation but saves thousands in restoration. Ask the pros below for a comparison quote.
Do I need a permit for sewer line replacement in Boulder County?
Yes — sewer line replacement in Boulder County requires a plumbing permit and inspection. Your plumber should handle the permit. Unpermitted work can cause problems when selling and may void insurance claims.
Other Services in Longmont
Drain Cleaning Water Heater Repair Burst Pipe Repair Repiping Bathroom Remodel Plumbing Sewer Repair Toilet Repair Faucet Repair Garbage Disposal Repair Sump Pump Repair Gas Line Repair Slab Leak Repair Water Line Repair Kitchen Remodel Plumbing Hydro-Jetting 24-Hour Plumber Same-Day Plumber Affordable Plumber Licensed Plumber Plumber Cost Clogged Drain No Hot Water Water Leak Low Water Pressure Frozen Pipes Sewage Backup All Emergency Plumbers
Sewer Line Replacement in Nearby Cities
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