dreamline builders logo
Basement Digout & Foundation Underpin

More headroom below — without moving.

A full-service builder for the Denver metro area. We lower basement floors and underpin foundations to unlock full-height living space — engineered, permitted, and owner-managed start to finish.

Licensed & Insured
Family-Owned
Free In-Home Estimates
1-Year Workmanship Warranty
Owner-Managed Projects
Licensed & Insured
Family-Owned
Free In-Home Estimates
1-Year Workmanship Warranty
Owner-Managed Projects
The Overview

Turn a low, dark basement into real living space.

About Dreamline
A digout is one of the most technical things you can do to a house — and one of the most rewarding. Done right, that cramped basement becomes full-height square footage you’d never guess was added.

Lowering a basement floor means excavating below the existing foundation and underpinning it — rebuilding the footing deeper, in careful sections, so the house stays fully supported the entire time. It is not a job for a general crew with a jackhammer. Get it wrong and you risk the foundation itself. We treat it as the structural project it is: an engineer’s design, sequenced underpinning, proper drainage, and inspections signed off at every stage.

Older homes around the Denver metro are where digouts pay off most — low-ceilinged basements that could be bedrooms, suites or family rooms. They’re also where the surprises live: soils, groundwater, and foundations built to a different standard. We don’t guess. We bring in a structural engineer, show you what’s under the house, and give you the cost and options before any work moves forward. You approve every change.

Engineered & Underpinned

Full ceiling height that makes the basement feel like the rest of the house.

Sequenced Correctly
Underpinning done in careful sections so the house stays supported throughout.
Older-Home Ready
We plan for soils, groundwater and older foundations — and price it honestly.
One Accountable Builder
The owner runs the job and is your single point of contact.
Excavation to finish, one team

Engineering, underpinning, excavation, drainage and finish — coordinated under one roof.

What We Build

From a low crawlspace to a
full-height lower level.

Most people have heard a remodeling horror story. Our job is to make sure you don’t have one.

01

Engineering & Design

Where a safe digout always starts.

02

Underpinning

Rebuilding the foundation deeper, safely.

03

Excavation & Digout

Lowering the floor for real headroom.

04

Waterproofing & Drainage

Keeping the new space dry for good.

05

Egress & Systems

Making it a legal, livable level.

06

Finish & Living Space

Turning new depth into rooms you’ll use.

How a Digout Goes

A digout, run in clear steps.

However deep we go, the promise is the same: no surprises you didn’t approve.

STEP 01

Walkthrough & honest conversation

We walk your basement with you and talk through the headroom you want and what’s realistic for your home and budget — no inflated dream-selling, no pressure.
STEP 02

Design direction & selections

We bring in a structural engineer to review the soils and foundation and design the underpinning, so the plan is sound before we dig an inch.
STEP 03

Detailed, itemized proposal

You get one clear scope and price — what’s included, what’s not, and where the real cost drivers are — before you sign anything.
STEP 04

Permits, schedule & expectations set

We pull the required permits, plan the sequenced underpinning and excavation, and lay out the timeline and how we’ll communicate throughout.
STEP 05

Build, with the owner on it

Work runs through our vetted excavation, concrete and foundation specialists, coordinated hands-on by the owner. One point of contact, start to finish.
STEP 06

When the walls come open

Digging below a house almost always turns something up — groundwater, soft soils, an older footing. We stop, show you exactly what we found, explain the options and cost, and wait for your go-ahead. You’re never surprised by a bill.
STEP 07

Final walkthrough

When the new lower level is framed, finished and inspected, we walk it with you and don’t call it done until you do.
Selected Work

Digouts & underpins
across the
metro.

“We’re working under your house — so we do it in careful sections, and we never rush the foundation.”

— HOW WE DO BUSINESS
Before You Call

Digout questions,
answered straight.

Q.01
Is a basement digout safe for my house?
Yes — when it’s engineered and underpinned correctly. We rebuild the foundation deeper in small, sequenced sections so the house is fully supported the entire time. It’s technical work, which is exactly why we insist on an engineer and never freelance it.
Q.02
How much headroom can I gain?
It depends on your foundation, soils and how deep we can safely go, but most digouts target a comfortable 8-plus feet of finished ceiling. We’ll tell you honestly what’s achievable for your home after the engineer reviews it.
Q.03
Do you handle design and selections?

Yes. A digout is usually the first phase of a full basement finish — we handle the structural work and the finished bedrooms, baths and living space that follow, all as one project.

Q.04
What if you find problems once the walls are open?

Digging below a house often reveals groundwater, soft soils or an older footing. We stop, show you exactly what’s there, lay out the options and cost, and wait for your go-ahead. You approve every change.

Q.05
Who manages all the trades?

The owner — not a rotating project manager. The same person who quotes your job coordinates every trade and is your point of contact from the first walkthrough to the last.

Q.06
How long does a digout take?

The structural portion — underpinning and excavation — typically runs several weeks to a couple of months depending on size and depth, plus engineering and permits up front and the finish work after. We’ll give you a realistic schedule, not a hopeful one.

Q.07
Do you handle waterproofing and drainage?

Yes — and it’s essential once you’re deeper in the ground. New perimeter drains, a sump system and proper membranes go in as part of the job, so the space you gained stays dry. We never skip it to save a few dollars.

Q.08
What warranty do I get?

A 1-year workmanship warranty on labor and installation. Materials and systems — waterproofing, sump, windows — carry manufacturer warranties that pass to you at completion.

Before You Call

Your project begins here.

Send a note about your home, your timeline, and your budget. We’ll be in touch within one business day.

720-912-7945

izzy@dreamlinebuildersco.com

Denver metro, roughly a 15-mile radius (Arvada, Lakewood, Littleton, Highlands Ranch, Aurora & nearby)

Tell us about your home.

No obligation — just a straight conversation.