Basement Bathrooms
Premium below-grade bathroom construction with expert plumbing, waterproofing, and luxury finishes.
The End Result
A Full Bathroom, Below Grade, Done Right.
Adding a bathroom below grade means fighting gravity — every basement bathroom we build starts with sewage ejection, vapor barriers, and ventilation planned before a single tile is set.
- IPC-Compliant Ejector SystemsBasement bathrooms sit below the main sewer line, so we size and install code-compliant sewage ejector pumps and check valves that won't back up or fail.
- Vapor & Moisture BarrierBelow-grade bathrooms trap humidity fast. We install a full vapor barrier and mechanical exhaust venting so steam never reaches your framing or drywall.
- Reinforced Wet-Wall FramingShower and tub walls get doubled studs and blocking for grab bars, glass panels, and fixtures — no soft spots, no future repairs.
The LX Standard
We Don't Just Run Pipe. We Engineer Bathrooms.
True expertise is found in the details that most contractors skip. Here’s what separates a basement bathroom that lasts from one that leaks.
Precision Rough-In Layout
We lay out supply and drain lines to the inch before framing closes in, so fixtures land exactly where your finish plan calls for them — no surprise offsets.
Anti-Hydro Management
Our multi-stage drainage and venting system is the gold standard for below-grade bathrooms — no sewer gas, no slow drains, no backups.
Code-Exceeding Ventilation
While code allows a basic exhaust fan, we size ventilation for real shower loads so mirrors don’t fog and mold never gets a foothold.
Livability & Light
A Bathroom That Feels Like an Upstairs Bath.
Heated floors, proper lighting layouts, and a real walk-in shower turn a basement half-bath into a room your family actually wants to use — not a stopgap for guests.
Home Value
A Second Bathroom Changes the Math.
In Denver’s market, a basement bathroom is one of the highest-return additions you can make — it’s what turns a finished basement into a legal, livable suite instead of just extra square footage.
- Adds a legal full or 3/4 bathroom
- Faster resale potential in Denver market
- Supports basement rental or in-law suite
Project Portfolio
Basement Bathrooms in Action
A look at recent below-grade bathroom builds across the Denver metro — from ejector rough-ins to finished walk-in showers.
Testimonials
Hear from our happy customers
Trusted by 310+ customers • 4.9 average rating on Google
Had Jose completely finish my basement and have never worked with a better contractor in my life. Not only was he always on time, but with every project comes issues, each and every time he was fair quick and honest with each issue. That being said, there was one real issue and he resolved it as quickly as possible and i could not have been happier to have picked him as the person to finish my basement. He completely gutted the basement, added a bathroom, and understood my vision for the basement. All inspections passed which made me truly know he knew what he was doing. could not recommend him more to anyone else and i continue to pass his number out to friends and family asking about the project.
Jose is one of the most professional and knowledgeable contractor I have ever worked with! I could not be more confident to recommend him for any framing work. He went above and beyond. We passed inspection first pass without issue. Best of the best. He is a basement expert.
From the first contact with Jose, I knew he was a man of his word and stood by his work. His professionalism was above average and the craftsmanship is top-notch. I would highly recommend him to anyone and am going to recommend him to everyone. Jose and his company have far surpassed my expectations. Thanks to him my project is going very smoothly and will be completed in a timely manner. I cannot say enough great things about Jose. He took the time to explain everything and ensure that his work is going to stand the test of time. Thank you again for all of your hard work and dedication Jose. Thank you Sir.
FAQ
Common Questions
Everything you need to know before starting your basement project.
How much space do I need for a basement bathroom?
A functional 3/4 bathroom needs roughly 30–35 sq ft; a full bathroom with a tub needs 40+ sq ft. We can also work with tight mechanical rooms if a shower-only layout fits your goals.
Will a basement bathroom cause moisture or mold problems?
No — when engineered correctly. Proper vapor barriers, mechanical exhaust ventilation, and moisture-resistant materials mean a basement bathroom is no more prone to mold than one upstairs.
Do I need a sewage ejector pump for a basement bathroom?
In almost every case, yes. Basement plumbing sits below the main sewer line, so a code-compliant ejector pump and check valve are required to move waste up and out.
How long does a basement bathroom build take?
A standard basement bathroom rough-in and finish typically takes 2 to 4 weeks, depending on layout complexity and whether we’re tying into existing plumbing stacks.
Can you add a bathroom to an unfinished basement with no existing plumbing?
Yes — we run new supply and drain lines and install the ejector system as part of the framing and rough-in phase, before drywall goes up.
Service Areas
Basement Bathrooms Available In:
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