About

Diamond Plumbing
Serving San Antonio & Surrounding Areas

We offer expert plumbing services to homeowners and builders — from new construction to renovations — with quality and reliability at the core.

✔ First-Class Quality at Affordable Prices
✔ Friendly, Uniformed & Highly Trained Technicians
✔ 200+ Years Combined Experience
✔ Military & Senior Discounts

What Else Do We Offer

Additional Services

We provide reliable, affordable plumbing services across San Antonio for your convenience and peace of mind.

Drain Cleaning

Mineral buildup, roots, or clogs? We’ve got you covered.

✓ Routine backups
✓ Foreign objects
✓ Tree root obstructions

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Sewer Line Cleaning

We inspect, clean and restore blocked or damaged sewer lines.

✓ Multiple backups
✓ Foul odors
✓ Sewer camera inspections

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Water Heater Repair

We fix tank and tankless water heaters — fast and reliably.

✓ No hot water
✓ Noisy unit
✓ Visible leaking

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Leak Detection

Prevent water damage and high utility bills with our expert leak detection.

✓ Hidden leaks
✓ Water bill spikes
✓ Wall or slab damage

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Exclusive Plans

Diamond Plumbing Memberships

Get priority access, exclusive savings, and the best value in plumbing support year-round.

Gold Plan

$199/yr

✓ 24hr Scheduling*
✓ 10% Off Flat-Rate Services
✓ Annual Tank Heater Flush & Inspection

Join Gold

Diamond Plan

$399/yr

Best Value

✓ Same-Day Scheduling*
✓ 15% Off Flat-Rate Services
✓ Flush & Inspect Tank/Tankless Heater
✓ Hard-Water Quality Analysis

Join Diamond

Both Plans Include:

✓ 2-Year Warranty on Fixtures
✓ Exclusive Member-Only Offers
✓ Annual Home Plumbing Report

Ground Phase

Rough-In, sewer and waterlines involves installing underground pipes that connect the building to the main water supply and sewer systems. This phase includes trenching, laying pipework, and ensuring proper slope and alignment before the foundation is poured.

Vanguard and Topout

The Vanguard phase involves installing the main water and waste lines through the foundation or slab before framing begins. The Topout phase follows, where above-ground supply and drainage pipes are installed after framing to prepare for final fixture connections.

Trim-Out

Final walk-thoughs and ensuring fixtures are installed according to plumbing code. This includes checking for leaks, proper water flow, and verifying that all systems meet safety and compliance standards. Any necessary adjustments are made to guarantee a fully operational and code-compliant plumbing system.

Our Customers Love Us!

      
   Diamond Plumbing Inc
   656 Google reviews 
  Write a review 
  
 
 
   
 
 
       Posted on Google  
   
   ShockSwift 
 
 
 
 Trustindex verifies that the original source of the review is Google. Chris did great work! Water Softner installed and working. Double checked on my garbage disposal and confirmed we have a leak on SAWS end after explaining a high water bill.
  
 
      Posted on Google  
   
   Arthur Adams 
 
 
 
 Trustindex verifies that the original source of the review is Google. Individual was very professional
  
 
      Posted on Google  
   
   Maureen Ennor 
 
 
 
 Trustindex verifies that the original source of the review is Google. Such wonderful guys who showed up!
  
 
      Posted on Google  
   
   Tom May 
 
 
 
 Trustindex verifies that the original source of the review is Google. C aleb was great.  I'd use him anytime I need a plumber
  
 
      Posted on Google  
   
   Johnathon Ruelas 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional and quick. On time based on estimate provided. Would recommend
  
 
      Posted on Google  
   
   diego cetina 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service — very professional and responsive.
  
 
      Posted on Google  
   
   Mobbin_Not_Sobbin 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had such a great experience with Diamond Plumbing! Dillon and TJ came out to service the issues I was experiencing (plumbing drainage), and they did an outstanding job. They were both courteous, professional, and incredibly thorough, taking the time to explain everything in detail so I always knew what was going on. Their work was efficient and top-notch from start to finish. I truly appreciate the care and attention they put into their job. I would highly recommend Diamond Plumbing—and especially Dillon and TJ—over anyone else!
  
 
      Posted on Google  
   
   tim hering 
 
 
 
 Trustindex verifies that the original source of the review is Google. Austin has completed multiple projects for me and has always been very professional & did a clean quality job