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In-House Plumbing Company

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United States
Allen, TX
In-House Plumbing Company

Expert, honest Residential Cast Iron Sewer Pipe Replacement with affordable pricing that won't break the bank.

Providing you residential cast iron sewer pipe replacement using Biblical principles with honesty and integrity at a fair price. It's our goal to serve you with the utmost honesty and integrity so that we can uphold our great reputation. We started this company on a strictly referral basis, and referrals continue to be a huge part of our business. Please read some testimonials of what our satisfied customers have said about us.

972-494-1750

08/31/2026

This home in Grand Prairie, Texas 75050 was one of four Under Slab Cast Iron Pipe Replacement jobs started and completed by In-House Plumbing Company in just one recent week.

If your home’s sewer system is still made of cast iron, now is the time to learn your options. Call 972-494-1750 today to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

Learn more here:
https://inhouseplumbingcompany.com/

08/24/2026

Check out our new blog post

Why a Warranty Is Only as Good as the Company Behind It

Many homeowners focus on warranty length when comparing old cast iron pipe replacement proposals. But the truth is simple: a warranty only matters if the company stands behind it.

Some companies advertise unusually long warranties as a sales tactic. But if the company disappears, avoids calls, or finds reasons to deny coverage later, the warranty is meaningless.

Reliable pipe replacement services don’t rely on fine print. They rely on accountability. A cast iron to PVC conversion should be performed by a company that is willing to fix a mistake — even years later — if it turns out they were at fault.

Underground pipe replacement is complex. Soil movement, foundations, and conditions outside a plumber’s control always exist. That’s why honesty matters more than promises.

The real value in cast iron pipe replacement cost isn’t the warranty term — it’s the integrity of the company backing the work. Longevity, reputation, and specialization matter far more than marketing language.

When something goes wrong, the question isn’t “How long is the warranty?”

It’s “Will they answer the phone and take responsibility?”

That’s the warranty that counts.

A warranty only matters if it’s honored. If you want a company that stands behind its work, contact In-House Plumbing Company.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/why-a-warranty-is-only-as-good-as-the-company-behind-it/

📞 Call 972-494-1750 to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

08/17/2026

Here is one example of what our customers are saying after having their under-slab cast iron sewer pipes replaced.

We are so thankful to the four homeowners who trusted us to complete their pipe replacement work last week. We appreciate every single family who puts their home in our hands.

If your home still has cast iron sewer lines, now is the time to learn your options. Call 972-494-1750 today to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

Learn more here: https://inhouseplumbingcompany.com/

08/10/2026

Check out our new blog post

What Really Matters More Than Reviews When Hiring a Cast Iron Replacement Company

Online reviews are helpful, but they don’t tell the full story — especially for major work like old cast iron pipe replacement under your home.

Some of the most important trust signals go beyond star ratings. Long-term specialization, professional involvement, and accountability matter far more than a snapshot of online feedback. Pipe replacement services that focus exclusively on underground pipe replacement develop experience and systems that general plumbers who “also do cast iron” often lack. A proper cast iron to PVC conversion requires planning, coordination, and repeatable processes built over many years.

Industry and community involvement is another overlooked factor. Membership in professional organizations and local chambers reflects stability and long-term commitment, not short-term marketing. That’s why In-House Plumbing Company is a member of the Plumbing-Heating-Cooling Contractors (PHCC) of North Texas — where our General Manager and one of our three Master Plumbers, Chris Williamson, currently serves on the chapter’s board — as well as the Garland Chamber of Commerce and the Metrocrest Chamber of Commerce.

Longevity matters too. Companies that have been performing cast iron replacement for decades are far more likely to be around if help is ever needed later. That stability directly affects the real value behind a cast iron pipe replacement cost.

Reviews show how a company performed on one job. Trust signals show whether they’re built to stand behind their work long-term.

Reviews are only part of the picture. Contact In-House Plumbing Company to learn what long-term reliability really looks like.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/what-really-matters-more-than-reviews-when-hiring-a-cast-iron-replacement-company/

📞 Call 972-494-1750 to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

08/03/2026

This home in Plano, Texas 75093 was one of four Under Slab Cast Iron Pipe Replacement jobs started and completed by In-House Plumbing Company last week.

If your home’s sewer system is still made of cast iron, now is the time to learn your options. Call 972-494-1750 today to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

Learn more here:
https://inhouseplumbingcompany.com/

07/27/2026

Check out our new blog post

How Homeowners Can Verify a Plumber’s License and Insurance Before Hiring

When hiring for old cast iron pipe replacement, trust should be verified — not assumed.

In Texas, licensed plumbers are regulated by the Texas State Board of Plumbing Examiners (TSBPE). Homeowners can search a company’s master plumber’s license number on the Board’s website to confirm that their license is active and in good standing. An inactive or missing license is a major red flag for underground pipe replacement.

Insurance verification matters just as much. General liability insurance is typically tied to a plumbing license, but because it is not required in Texas, workers’ compensation is not publicly listed. Homeowners should ask whether both are carried and understand the difference.

Proper pipe replacement services require licensing because cast iron to PVC conversion involves slope calculations, venting, transitions, and code compliance. These are not excavation tasks — they are plumbing tasks.

Unlicensed work can fail inspection, cause leaks, or require the entire system to be replaced again later. That turns an already significant cast iron pipe replacement cost into an even bigger financial hit.

Verification takes minutes and can prevent years of regret. A professional contractor will welcome these questions and provide clear answers.

Replacing cast iron is too important to leave to assumptions.

Verifying licenses and insurance is simple — and worth it. Reach out to In-House Plumbing Company if you want help confirming

👉 Read the full blog here:
https://inhouseplumbingcompany.com/how-homeowners-can-verify-a-plumbers-license-and-insurance-before-hiring/

📞 Call 972-494-1750 to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

07/21/2026

Here is one example of what our customers are saying after having their under-slab cast iron sewer pipes replaced.

We are so thankful to the five homeowners who trusted us to complete their pipe replacement work last week. We appreciate every single family who puts their home in our hands.

If your home still has cast iron sewer lines, now is the time to learn your options. Call 972-494-1750 today to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

Learn more here: https://inhouseplumbingcompany.com/

07/13/2026

Check out our new blog post

Why Workers’ Compensation Matters for Cast Iron Pipe Replacement in Texas

Many homeowners don’t realize that Texas does not require workers’ compensation insurance — and that creates real risk during underground pipe replacement projects.

Old cast iron pipe replacement involves excavation, tunneling, confined spaces, and heavy materials. If a worker is injured on your property and the company does not carry workers’ comp, the homeowner can become financially exposed.

Some companies skip this coverage to lower costs and offer cheaper pricing. That may reduce their overhead, but it shifts risk directly onto the homeowner. Pipe replacement services should protect both the crew and the customer.

Workers’ comp is separate from general liability insurance. Liability covers property damage. Workers’ comp covers injuries to employees. Without both, a cast iron pipe replacement cost that looks attractive upfront can become a serious problem later.

A professional cast iron to PVC conversion should be performed by a company that carries proper insurance, including workers’ compensation, even though it’s not required by the state. That choice reflects responsibility and long-term stability.

Replacing cast iron is about more than pipes. It’s about protecting everyone involved.

Insurance matters more than most homeowners realize. Contact In-House Plumbing Company to learn how we protect both our customers and our crew.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/why-workers-compensation-matters-for-cast-iron-pipe-replacement-in-texas/

📞 Call 972-494-1750 to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

07/06/2026

This home in Mesquite, Texas 75150 was one of four Under Slab Cast Iron Pipe Replacement jobs started and completed by In-House Plumbing Company in just one recent week.

If your home’s sewer system is still made of cast iron, now is the time to learn your options. Call 972-494-1750 today to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

Learn more here:
https://inhouseplumbingcompany.com/

06/29/2026

Check out our new blog post

Why No One Can Price Cast Iron Pipe Replacement Over the Phone

Homeowners often ask for a ballpark price before scheduling an estimate. That’s understandable — but old cast iron pipe replacement simply cannot be priced over the phone. Any company that does is guessing.

Cast iron systems are unique to every home. Pipe replacement services depend on where each fixture is located, how the plumbing must be routed, and where the city sewer connection ties in. Toilets, tubs, kitchens, laundry rooms, and secondary fixtures all affect how an underground pipe replacement must be designed. Until those details are physically verified, no one can know the true scope of work.

One of our founding partners used to explain it this way: pricing cast iron replacement without seeing the home is like asking how long a piece of string is. Until you see it, there’s no honest answer.

Some homes allow rerouting that reduces tunneling. Others require extensive access under the slab and through the yard. Soil conditions, trees, sprinklers, brick access, and elevation changes all affect the final plan — and the cast iron pipe replacement cost.

A proper cast iron to PVC conversion starts with a site visit, measurements, and a clear plan. Accurate pricing comes from seeing the home, not guessing over the phone.

If someone gives you a price without seeing your home, ask why. In-House Plumbing Company is happy to explain what a proper evaluation looks like.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/why-no-one-can-price-cast-iron-pipe-replacement-over-the-phone/

📞 Call 972-494-1750 to schedule your Free Estimate & Consultation.

Serving Plano, Richardson, Garland & Surrounding Cities.

Address

5903 Curtis Dr.
Allen, TX
75002

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm

Telephone

972-494-1750

Website

http://www.inhouseplumbingcompany.com/

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