Family-owned & operated in Denver since 1972 Call or text: 303-909-4652
Denver Water & Sewer Excavation

Dug right.
Backed for five years.

Water and sewer line repair, replacement, and new service installation — done by the owner, not a crew you've never met, and covered by a five-year transferable warranty.

Since 1972Three generations of digs in Denver soil
Owner on Every JobThe person who bids it is the person who digs it
Licensed & InsuredPermitted work in Denver and surrounding municipalities
Before You Call

Why homeowners choose Castillo Excavating

5Year
Warranty
The Castillo Standard

A warranty that moves with the house

Every repair and installation we perform is backed by a five-year transferable warranty. If you sell the property, the warranty transfers to the new owner — which makes our work a selling point on your inspection report, not a question mark. Most excavators warranty their work for one year, if at all. We put five in writing.

Our Work

Real jobs, real ground

Every one of these is a Castillo dig in Colorado soil — water service, sewer construction, and the kind of clean, code-ready work we put our five-year warranty behind.

What We Do

Water & sewer, end to end

From the meter pit to the main, repairs to full new construction — permitted, inspected, and backfilled clean.

Water

Water Line Repair & Replacement

Leaking, frozen, or failed water services repaired or fully replaced in copper. Trenchless boring available to save your yard, driveway, and landscaping.

Water

New Water Service Installation

Complete new taps and service lines for new builds and remodels — meter pits, curb stops, and coordination with the water department included.

Sewer

Sewer Line Repair & Replacement

Spot repairs, partial replacements, and full sewer line replacements. Collapsed clay, root intrusion, bellies, and offsets — we've dug them all out.

Sewer

New Sewer Construction

New sewer laterals for new construction and additions, installed to grade and to code, with permits and inspections handled start to finish.

Inspection

Sewer Scope Inspections

Camera inspection of your sewer line with a written, photo-documented report — ideal for home purchases and pre-sale peace of mind.

Site Work

Excavation & Utility Work

Utility trenching, demolition support, and excavation for contractors and homeowners across the Denver metro.

Buying a home? Scope it first.

A sewer scope inspection takes about an hour and can save you from a five-figure surprise after closing. You get a numbered written report with footage and findings — and if we end up doing the repairs, your re-inspection is free.

$179 Sewer Scope Inspection
Since 1972

Three generations in Denver soil

Castillo Excavating was founded by my grandfather more than fifty years ago. Today I run the company the same way he did: I write the estimate, I pull the permit, and I'm in the trench when the work happens.

No call centers, no rotating crews, no surprises on the invoice. When you hire Castillo, you get the owner's name on the proposal and the owner's hands on the work — which is exactly why we can put a five-year warranty behind it.

  • Colorado licensed & insured
  • Owner-operated: one point of contact from estimate to backfill
  • Permits and city inspections handled for you
  • Clean job sites — we leave your property the way we found it, minus the problem
Castillo Excavating Takeuchi excavator on a Denver new-construction job site
Where We Work

Denver metro & the foothills

Denver Metro

Denver, Lakewood, Wheat Ridge, Arvada, Edgewater, Englewood, Aurora, Centennial, Thornton, Littleton, Commerce City, Westminster, and surrounding municipalities.

Foothills & Boulder

Golden, Morrison, Evergreen, Boulder, and Broomfield — including steep-grade and mountain-lot work.

Contractors Welcome

We sub for general contractors, demolition outfits, plumbers, and builders who need utility excavation done on schedule.

Get an Estimate

Tell us about your dig

Phone (Call or Text)
303-909-4652
Email
office@castilloexcavating.com
Address
1310 Raleigh St., Denver, CO 80204
Hours
Mon–Fri 8 AM–6 PM
Sat 8 AM–4 PM

Request a free estimate

Send your address and a quick description of the problem — standing water, sewer backup, a failed scope on a home you're buying — and we'll get back to you with a written proposal. No pressure, no padding.

Prefer to talk? Call or text 303-909-4652.