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Mark and Tracy Gilliland’s home, with a paver driveway, stone accents and evening light
Custom homes · Renovations · Commercial · Greater Colorado Springs

Your home, built by a builder you know by name

Whether it’s a new home, one room or a whole building, Mark Gilliland leads every Cornerstone project himself, from the first sketch to the final walkthrough, with a small circle of trusted partners he’s worked with for years.

Let’s talk about your projectSee our work

No cost, no pressure. Just a conversation about what you’re hoping to build.

One builder

Mark, the owner, on your build

Not a sales rep, then a project manager, then a crew you’ve never met

The person you sit down with is the person who builds your home.

Trusted partners

Every trade hand-picked

Instead of a revolving crew, Mark works with a small circle of highly vetted partners.

Each one has earned their place on a Cornerstone job.

Proven range

Decades of building of every kind

  • Custom homes in Colorado and, before that, Ohio
  • Renovations and commercial / multi-tenant work
  • Class B license

That range shows up in how carefully every project is planned.

What we build

Dreams come in all shapes and sizes

A new home on your land
One room that finally works
A building that becomes your church or your business
Mark leads each one himself.

A Cornerstone custom home with a wraparound deck, set among the pines
Custom homesA new home built on your land
Designed around how you liveCustom homes →
Built-in oak bookcase wall hiding a speakeasy door
Residential RenovationsA single room or a whole house
No dream too smallRenovations →
Church sanctuary renovated by Cornerstone
Commercial RenovationsClass B licensed
Churches, Ministries, offices, multi-tenantCommercial →
Now building

A Cornerstone home, available Fall 2027

Mark is building this home now. Buy it while there’s still time to choose your own finishes.

Rendering of the single-level Cornerstone home now being built in Black Forest, with Pikes Peak behindRendering

Black Forest · 2.87 acres

Beds4
Baths4
Finished4,752 sq ft
Garage4-car

5,546 sq ft total. Main-level primary suite, flex room, mudroom, walk-in pantry, open kitchen and living room extending onto a covered patio

  1. Design
  2. Permits
  3. Framing
  4. Finishes
  5. Move-in

Finish selections open until April 1, 2027. Price on request.

Ask about this homeSee the plans
Main-level floor plan: four-car garage, mudroom, laundry and pantry, open kitchen, dining and living, covered patio, primary suite, second bedroom and flex room
Main level. Two more bedrooms are on the lower level. See all the plans →
The plan

Built for how families actually live

Picture an ordinary day here.

  • Coming homePull into the four-car garage and walk straight into the mudroom. Boots, backpacks, and groceries land where they belong (with the laundry and walk-in pantry only steps away), before anyone reaches the kitchen.Mudroom 121 sq ft · Laundry 111 · Pantry 94 · Garage 1,148
  • The heart of the houseThe kitchen opens to the dining area and a living room built around a fireplace. Whoever’s cooking is still part of the conversation.Living 472 sq ft · Kitchen 242 · Dining 194
  • Evenings outsideOpen the doors to a covered patio big enough for a long table, with the pines and a view of Pikes Peak.Covered patio 377 sq ft · Open patio 204
  • A room that grows with youThe flex room is a home office today, a nursery or a playroom later, and a guest room when family comes to stay.Flex room 205 sq ft
  • At the end of the dayThe primary suite sits on the main level, with a free-standing tub and a walk-in closet. A quiet place to rest, away from the noise of the house.Bedroom 344 sq ft · Bath 215 · Closet 120
Why Cornerstone

Small by choice Built differently

Colorado Springs has many good custom builders. Here’s what’s different about building with Mark.

A typical custom builderCornerstone
Who’s on siteA superintendent or project manager, after a sales and design hand-offMark himself, from the first walk of your land to move-in
Where your budget goesModel homes, showrooms, in-house departments and their overheadInto your house. Lean overhead, with vetted partners paid for the work they do
RangeHomes only, usually large onesCustom homes, renovations of every size, and Class B licensed commercial work
What it’s built onA brand promiseFaith in Christ, the Cornerstone, and decades of relationships with the families he builds for
Mark and Tracy Gilliland
The Gilliland family, all together on a trip to Moab
Our story

Built on relationships, long before the first foundation

Cornerstone is Mark and Tracy Gilliland’s family business, and the name is a confession of faith. Scripture calls Jesus Christ the chief cornerstone, the stone everything else is built on and measured against. Mark and Tracy build their family on Him first, and every home after that.

“…Christ Jesus himself being the cornerstone.” Ephesians 2:20

Read our story

“When I build, I build relationships, not houses.”

Mark Gilliland, Cornerstone Design Build

How we build

One process
One point of contact

See how it works
Framing for a curved staircase on a Cornerstone build

  1. Conversation

    Your land, how you live, your timeline, and a realistic budget

    No cost

  2. Site & design

    A plan shaped around the lot, the views, and your family

  3. Plan & price

    A clear scope and budget before ground is broken

  4. Build & beyond

    Mark walks the build with you, and still answers the phone after

Start your build

Thinking about building?

Start with a conversation. No cost, no pressure. Mark will tell you honestly what it takes to build on your land, on your timeline.

Let’s talk about your project