Building a home can feel overwhelming. There are a lot of moving pieces, a lot of decisions, and a lot of places you could go to source materials. But the reality is—you don’t have to.
At Alamosa Building Supply and La Jara Trading Post, we’ve helped with thousands of builds across the San Luis Valley. We’ve made it simple to order nearly everything you need for your home in one place—from the foundation to the paint and everything in between. We have experienced staff to provide estimating and take-offs for your project.
Let’s walk through what that process looks like.
Step 1: Start with the Foundation
Every solid home starts with a solid base.
For homeowners and builders looking for efficiency, we offer systems like Fox Blocks, an insulated concrete form (ICF) system that combines structure and insulation in one step. It’s a great option for both contractors and DIY builders looking to save time and improve energy efficiency. We offer a full line of foundation products. Rebar, Remesh, XPS foam insulation, waterproofing and anchor bolts.
Learn more here: https://www.foxblocks.com
You can get Fox Blocks locally supplied from one of our two stores. We also offer the concrete, rebar, and other materials needed to get your foundation done right.
Step 2: Framing the Structure
Once your foundation is in place, framing is next.
This is where our crew can really help you out in a way no one else can. Our lumberyards are equipped to handle everything from small cabins to full custom homes. We carry dimensional lumber, engineered wood products, OSB, plywood, nails, Simpson hardware and everything needed to get your structure up.
Working with a local supplier helps you avoid delays and keeps your project moving on schedule. Our delivery fleet provides delivery across the San Luis Valley and beyond.
Learn more here: https://www.roseburg.com/engineered-wood/
Our team highly recommends the Huber Zip system for sheathing your home. This product offers fast installation, energy efficiency, high moisture protection, and great warranties. You’ll also love the up to $9,350 in rebates.
Learn more about the product here: https://www.huberwood.com/solutions
Learn more on rebates here: https://www.huberwood.com/rebates/ziprebate-2026
Step 3: Windows & Doors That Perform
Windows and doors play a big role in comfort, efficiency, and overall look. We have the team to assist you navigate the local Energy codes and products best suited for your build.
At Alamosa Building Supply, we carry Milgard Windows & Doors, known for their quality and long-term performance. Whether you’re building a modern home or a mountain cabin, there are options to fit your style. Milgard offers fiberglass and vinyl windows tough enough for the local climate.
Rebates are often available on Milgard products, which can help reduce overall project costs.
Learn more here: https://www.milgard.com/
If wood is your style, La Jara Trading Post can deliver high quality Marvin windows & doors. Be sure to check out Marvin Signature Series, Elevate and Vivid Collection for striking colors and bold sizes. Marvin provides Aluminum Clad and Fiberglass options that turn heads.
Learn more here: https://www.marvin.com/
Entry doors provide curb appeal, safety and security for your home. Therma-tru exterior doors and Larson storm doors are offered at both locations.
Learn more here: https://www.larsondoors.com/
Learn more here: https://www.thermatru.com/
Whichever brand you choose, our experienced team will work with you to ensure the right sizes and types to make your home match your dreams.
Step 4: Plumbing, Electrical & Interior Systems
This is where projects can get complicated—but it doesn’t have to be.
We carry a full line of plumbing and electrical supplies to help you move from rough-in to finish without needing multiple suppliers. That includes trusted brands like Cash Acme, known for reliable plumbing solutions that help you get the job done right.
Learn more here: https://www.cashacme.com/
Having everything in one place keeps your project organized and efficient.
Step 5: Siding, Roofing & Exterior Finishes
Your exterior materials protect your home and define its look. What you choose also determines how much ease or stress you’ll have maintaining your home.
We supply roofing, siding, and trim options that are built to handle San Luis Valley weather conditions. That includes products from Owens Corning, a trusted name in asphalt shingles. Metal options from our trusted suppliers Metal Sales and Metal Wholesale. Sidings from LP, Diamondkote and James Hardie.
Learn more here: https://www.owenscorning.com/
Learn more here: https://www.metalsales.us.com/
Learn more here: https://www.metalwholesale.com/
Learn more here: https://www.lpcorp.com/products/siding-trim
Learn more here: https://diamondkotesiding.com/
Learn more here: https://www.jameshardie.com/
Our team can help you choose materials that balance durability and appearance.
Step 6: Interior Finishes & Paint
As your project wraps up, it’s time to bring everything together.
We carry insulation, drywall, and paint products to help you finish strong. That includes Valspar paint, along with products like Glidden Stain Block Primer to ensure a clean, long-lasting paint job.
Learn more here: https://www.valspar.com/
You pick the color and sheen, and we’ll do the rest to mix up a paint that will make your house feel like home.
Finish strong with interior doors, trim and cabinetry. Wood finishes to warm and modern paint grade options all under one roof. Orepac interior doors and trim make every doorway count.
Learn more here: https://www.orepac.com/interior-doors
Learn more here: https://www.orepac.com/moulding-millwork
Learn more here: https://www.aristokraft.com/
Step 7: One Team, One Order, Less Stress
The biggest advantage of working with Alamosa Building Supply and La Jara Trading Post is simplicity.
Instead of working with multiple vendors, you can:
- Coordinate everything in one place
- Reduce delays
- Get consistent guidance throughout your project
- Rely on our delivery fleet with job site forklifts
- Take advantage of contractor pricing and bulk discounts
- Shop thousands of products with in-stock position
We’ve been part of thousands of builds in the San Luis Valley, and we know what it takes to keep things moving.
Ready to Get Started?
If you’re planning a build, come talk to us early in the process. Our stores and lumberyard have the supplies for an easy, fast, on-budget build.
We’ll help you figure out what you need, when you need it, and how to keep your project running smoothly.
From foundation to finish, we’ve got your whole house covered.
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Also, be sure to check out the Top 5 Mistakes People Make When Building a Cabin before you get started!
