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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

06/08/2026

This home in Farmers Branch, Texas 75234 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/

05/22/2026

Check out our new blog post

Why Trenchless Methods Often Fall Short for Cast Iron Replacement

Trenchless sewer repair is often marketed as a faster, less invasive solution for failing pipes. While it can work in extremely limited scenarios, it frequently falls short when dealing with old cast iron pipe replacement — especially in older homes in Plano, Richardson, Garland, and surrounding cities.

Many trenchless systems rely on the existing pipe as a structural host. The problem? Cast iron pipes that need replacement are often cracked, corroded, misaligned, or missing sections entirely. Installing a liner inside a failing pipe doesn’t fix those underlying issues — it simply hides them.

A proper cast iron to PVC conversion removes deteriorated materials completely, allowing plumbers to set correct slope, eliminate offsets, and reconnect fixtures properly. Trenchless methods rarely allow for these corrections, which are critical for long-term drainage performance.

Another concern is inspection and verification. With underground pipe replacement, exposed work can be visually inspected and pressure tested. Trenchless installations rely heavily on camera footage, which cannot always detect defects, improper bonding, or future failure points.

Homeowners considering pipe replacement services should ask whether the solution eliminates the problem or merely delays it. Trenchless options often appear cheaper upfront, but when failure occurs later, homeowners may end up paying twice — once for the liner and again for full replacement.

When evaluating cast iron pipe replacement cost, longevity matters more than appearance. Removing and replacing failing cast iron remains the most reliable solution for long-term performance.

Trenchless options sound appealing, but they’re not always the right solution. Talk with In-House Plumbing Company to understand what works best for your home.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/why-trenchless-methods-often-fall-short-for-cast-iron-replacement/

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

Serving Plano, Richardson, Garland & Surrounding Cities.

05/11/2026

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/

05/04/2026

Check out our new blog post

Why Backfill Quality Matters After Cast Iron Pipe Replacement

When homeowners think about old cast iron pipe replacement, most focus on the plumbing itself. But one of the most overlooked — and most important — parts of underground pipe replacement is what happens after the new pipes are installed: backfill.

Backfill is the process of returning soil to tunnels and trenches after a cast iron to PVC conversion. In areas like Plano, Richardson, Garland, and surrounding cities, expansive clay soils make this step especially important. Poor backfill can leave large voids under the slab or along tunnel walls, creating uneven support that may contribute to foundation movement or settling over time — even if the plumbing work was done correctly. Mixing foreign soil, adding chemicals, or failing to compact properly increases that risk.

It’s also important to understand that while cities inspect the plumbing itself, they do not inspect backfill — meaning how soil is replaced and compacted depends entirely on the contractor’s standards and experience.

Backfill also plays a critical role in protecting the newly installed pipe itself. Improper compaction can allow pipes to shift, lose slope, or place stress on fittings, creating problems long after the job appears finished.

It’s also important to understand that small voids are normal and expected after backfill settles, especially along the back side of concrete beams or between the slab and soil in tunnel areas. We’ve performed this work for decades and have worked at the recommendation of foundation repair companies for thousands of homeowners. When native soil is reused and properly hand-compacted, these small settlement voids do not compromise the foundation.

Professional pipe replacement services focus on restoring soil correctly — not just replacing pipes. When evaluating cast iron pipe replacement cost, homeowners should understand that quality backfill is part of doing the job right, not an optional extra.

Backfill matters more than most people realize. Contact In-House Plumbing Company to learn how cast iron replacement should be done correctly from start to finish.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/why-backfill-quality-matters-after-cast-iron-pipe-replacement/

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

Serving Plano, Richardson, Garland & Surrounding Cities.

04/27/2026

This home in Dallas, Texas 75218 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/

04/20/2026

Check out our new blog post

Why One Company Should Handle Both Excavation and Plumbing

Some homeowners consider hiring one company for excavation and another for plumbing to save money. With old cast iron pipe replacement, this approach often creates more problems than it solves.

Excavation and plumbing are tightly connected. Routing decisions, slope requirements, access points, and backfill methods all depend on one another. When different companies handle separate portions of underground pipe replacement, responsibility becomes fragmented.

If plumbing needs additional access, who does the digging? If excavation damages a pipe, who fixes it? When delays occur, coordination breaks down. These gaps often lead to finger-pointing, scheduling conflicts, and a higher overall cast iron pipe replacement cost.

Integrated pipe replacement services eliminate these issues. One company plans and executes the entire cast iron to PVC conversion, ensuring excavation and plumbing work together — not against each other.

Homeowners benefit from clearer timelines, better communication, and single-source accountability. Problems are addressed immediately instead of debated between contractors.

When replacing cast iron pipes, coordination matters just as much as craftsmanship.

Coordinating excavation and plumbing shouldn’t be your burden. Contact In-House Plumbing Company to learn how a single-source approach simplifies the process.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/why-one-company-should-handle-both-excavation-and-plumbing/

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

Serving Plano, Richardson, Garland & Surrounding Cities.

04/06/2026

Check out our new blog post

Why Licensing Is Critical for Cast Iron Pipe Replacement

Cast iron replacement is not just excavation — it is licensed plumbing work. Yet many homeowners don’t realize how often old cast iron pipe replacement is attempted by unlicensed individuals or excavation-only crews.

Plumbing under a slab requires technical knowledge, including proper slope calculations, correct transitions, venting considerations, and strict compliance with city codes. Licensed plumbers are trained, tested, and regulated to perform this work safely and correctly.

When unlicensed operators perform pipe replacement services, homeowners take on serious risk. Improper installation can lead to leaks, recurring backups, failed inspections, and costly rework. In some cases, unsafe plumbing conditions can even create health hazards inside the home.

A proper cast iron to PVC conversion should always be performed by a licensed plumbing contractor who also carries appropriate insurance. This protects the homeowner and the workers on site — especially since underground pipe replacement involves confined spaces, tunneling, and heavy excavation.

When evaluating cast iron pipe replacement cost, licensing should never be optional. A lower price from an unlicensed provider often leads to higher costs later, including tearing out work that never should have been done in the first place.

Hiring a licensed plumber provides accountability, code compliance, and long-term reliability.

Before hiring anyone to replace cast iron pipes, confirm the work will be done by a licensed professional. Contact In-House Plumbing Company to understand why that matters.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/why-licensing-is-critical-for-cast-iron-pipe-replacement/

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

Serving Plano, Richardson, Garland & Surrounding Cities.

03/30/2026

This home in Richardson, Texas 75080 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/

03/23/2026

Check out our new blog post

Why Cast Iron Replacement Estimates Aren’t Guarantees

Many homeowners assume that once they receive an estimate for old cast iron pipe replacement, the number is locked in. In reality, estimates for underground pipe replacement are based on visible conditions and the best information available before excavation begins.

Cast iron systems are buried beneath slabs and yards. Until soil is opened and pipes are exposed, certain issues may remain hidden — collapsed sections, unexpected routing changes, undocumented repairs, or additional fixture connections. Any of these can affect the final scope, timeline, or cost.

Responsible pipe replacement services account for these realities by inspecting thoroughly, planning carefully, and communicating clearly. A professional cast iron to PVC conversion is designed to reduce surprises, but no contractor can see through concrete or soil.

This is especially important for buyers planning to replace pipes after closing. A pre-purchase estimate is not a guarantee of final cost. Understanding that risk is critical when evaluating cast iron pipe replacement cost as part of a real estate decision.

Estimates should be viewed as informed projections — not promises. The goal is accuracy, transparency, and preparedness, not artificially low numbers designed to win work.

Replacing cast iron means eliminating a known failure point. Doing it right requires experience, flexibility, and honest expectations.

If you’re relying on an estimate to plan your project or a home purchase, contact In-House Plumbing Company to talk through the risks before moving forward.

👉 Read the full blog here:
https://inhouseplumbingcompany.com/why-cast-iron-replacement-estimates-arent-guarantees/

📞 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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