Carpenter-led general contracting across greater Los Angeles. ADUs, wildfire hardening, and custom residential — finished to the standard of fine carpentry, on a contract you can hold us to.
or call & text (818) 739-9439
Focused services where licensure, design sensibility, and the right team make a measurable difference for Los Angeles homeowners.
Protect your home before the next fire season. Chapter 7A-compliant retrofits — Vulcan Vent ember-resistant venting, Class A roofing, dual-pane tempered windows, Nakamoto Forestry non-combustible siding, and defensible perimeter detailing.
Whole-home remodels, kitchen and bath renovations, and additions — built the way a carpenter thinks about it. Tight tolerances, honest materials, itemized pricing. For clients who want a modern material palette, we spec Nakamoto Forestry exterior and interior cladding.
Add rental income or living space without the chaos of managing multiple contractors. Stillmark handles design coordination, permitting, foundation, framing, mechanical, electrical, plumbing, and finish — one contract, one point of contact.
Finish carpentry, custom built-ins, staircases, window installations, and residential renovations — the standard we carry into every Stillmark project.
Three Generations
Custom Staircase
Curved Room
Cedar Ceiling
Custom Built-Ins
Walk-In Closet
ADU Conversion
Custom Residential
Five-star work, verified by the people who hired us. Read our reviews on Google or leave one of your own.
"What stood out most was his attention to detail, cleanliness throughout the project, and respect for our home. Matt worked efficiently, stayed on schedule, and left the job site spotless every day. We've already recommended Stillmark Construction to friends and family and will continue to do so."
"The quality of the fence is excellent, and it was a great price for the money. The work was completed promptly — I highly recommend his services to anyone in need. Thank you for a job well done."
Our process is built so you know what's happening, what it costs, and when you'll pay. No surprises, no inflated change orders.
On-site visit. We measure, photograph, and define the scope together so your estimate reflects the real project — not a sales pitch.
Scheduled within 1–2 weeksLine-item pricing for materials, labor, permits, and contingency. Clear scope, clear number — delivered as soon as the scope is confirmed.
Soon after walkthroughSigned agreement, scheduled start, and a fixed schedule of progress payments tied to milestones — not vague hourly drift.
Milestone-based drawsFinal walkthrough, punch list completion, and final invoice — typically issued within 7 days of project close.
Net-7 final invoice
Three generations of builders. My grandfather built. My father builds. We're still building.
The standard hasn't changed — the carpentry, the contract, the finish. Stillmark takes on wildfire hardening, custom residential builds, and ADU conversions. Work where craft matters. If yours fits, let's talk.
When you hire Stillmark, you work directly with me — not handed off to a crew you've never met. I'm on the job, I answer my phone, and I stand behind every detail.
Matthew Callahan Jr · CSLB #1155399
Work With Us →A California Class B general building license means Stillmark can take responsibility for whole projects — not just one trade.
Slab, stem-wall, post-and-pier; new builds, additions, structural repair.
Class A assemblies, flashing, weatherproofing, soffit and eave detailing.
Tempered, dual-pane, fire-rated; custom millwork openings.
Trim, casing, crown, accent walls, slat ceilings, custom millwork.
Custom shelving, cabinetry, integrated storage systems.
Composite and hardwood decks; non-combustible exterior surfaces.
Nakamoto Forestry charred and natural wood siding — fire-resistant, architect-specified, and built to last the California climate.
Vulcan Vent Chapter 7A compliant venting integrated into new and retrofit assemblies — the detail most contractors miss.
Based in the San Fernando Valley, with active projects across greater Los Angeles and Southern California.
Tell us about your project. We respond within one business day to schedule a walkthrough.