Data-driven picks for Colorado buyers
Buying a home in Colorado? It’s expensive. It’s competitive. And if we’re being honest, the mortgage process can feel like a black box.
To help buyers make smarter choices, we crunched the numbers. We analyzed closed-loan data from hundreds of thousands of loans across 98 different lenders operating in Colorado. Check out the full TrueRate analysis.
We also categorized lenders to help you find the right fit—whether you’re a first-time buyer, looking for a digital-first experience, or need something more specialized.
Tomo Mortgage
Why it stands out
Ok, we’re a little biased, but the numbers speak for themselves—low rates, no lender fees, better reviews. Tomo Mortgage was founded in 2025 by former Zillow execs who wanted to fix what was broken in the mortgage industry. They did away with bait-and-switch prices, inflated rates, and confusing fees. It was ranked Best Online Lender 2025 by Bankrate, based on its strong customer reviews and backing from major financial services firms. Tomo historically has some of the lowest rates among lenders operating in Colorado.
Lower rates drive more transparency: you can get personalized rates online without applying or speaking to sales. The rate tool includes a slider that shows how your monthly payment changes with and without points—clarity and control from the start.
Read full review: Tomo Mortgage
What borrowers say
“I almost went with a different lender at first but ended up going to tomo and I’m glad I did… 10/10”
“Loan advisory team was remarkably responsive… stayed engaged until the very end.”
“Because of Tomo’s low APRs… it gets a perfect 5 out of 5 stars for affordability.”
FirstBank
Why it stands out
Headquartered in Lakewood, Colorado, FirstBank is one of the largest privately held banks in the country, with nearly $90 million in mortgage volume in Arizona alone in 2024 (HMDA data). Despite its scale, it operates with a local-first philosophy that prioritizes relationships over transactions. With a strong presence in Colorado and Arizona, FirstBank combines competitive pricing with a personalized approach—offering in-branch support, responsive loan officers, and a focus on closing on time.
Our TrueRate analysis shows their 30-year fixed conventional rates frequently beat market averages.
Read full review: FirstBank
What borrowers say
Detailed third-party reviews specifically focused on FirstBank’s mortgage services are limited. Most available feedback on platforms like the Better Business Bureau, Yelp, and Indeed centers around general banking experiences or employee perspectives rather than home lending. While some customers highlight positive interactions and responsive service, mortgage-specific insights are relatively scarce across major review sites.
Founded in 1998 as one of the first fully digital mortgage lenders, AimLoan (American Internet Mortgage) built its model on automation to cut costs and offer some of the lowest rates, especially for conventional and jumbo loans. Many customers praise its quick, as-quoted closings, but service can be slower—particularly after loans are transferred. Best for rate-focused buyers who prioritize efficiency over hands-on support.
Read full review:
AimLoan
AimLoan earns praise across Zillow, Birdeye, and forums like Bogleheads for its consistently low rates, transparent fees, and efficient online process.
Alliant Credit Union is a digital, member-owned, nonprofit financial institution headquartered in Chicago, serving over 800,000 members nationwide. As an online-only lender, Alliant offers a broad range of mortgage solutions with a focus on affordability, variety, and convenience. Bankrate gave Alliant Credit Union a 4.7/5 stars
Our TrueRate model shows Alliant Credit Union Historically has lower than typical interest rates.
Read full review:
Alliant Credit Union
Alliant Credit Union is praised for its affordability, offering competitive rates, low origination fees, and a transparent, “no surprises” approach to closing costs. Borrowers benefit from a wide variety of loan options and digital convenience, with high customer ratings on platforms like Zillow and Bankrate.
Rocket Mortgage and Guild Mortgage originated billions in Colorado loans last year, but they didn’t appear in our closed-loan dataset.
We reviewed HMDA volume and spot-checked public rate sources for context.
These aren’t directly comparable to our ranked lenders, but they’re useful reference points when shopping broadly.
Originated $2.4B+ in Colorado home loans in 2024 across 6,000+ loans (avg. loan size ~$418k). Mix: ~39% refi, ~60% purchase. Originated $1.4B+ across 3,000+ Colorado loans in 2024 (avg. ~$446k). Mix: ~87% purchase, ~13% refi. As of Aug 7, 2025, Guild Mortgage’s rates were not published on third-party aggregator sites like Nerdwallet, and they do not publish their rates online. AimLoan
Why it stands out
What borrowers say
“Got the best offer from AIM for 30 years fixed rate home refinance (Investment property). Loan approval was quick. Low closing cost and everything was online and smooth. I would highly recommend AIM.”
“I have dealt with AimLoan over 6 times for mortgage originations. Every time, I have had a wonderful experience. ”
“We refinanced recently with AIMLoan and it was a pretty awful process. The rates at the best we’ve found (almost half a percent lower than competitors), which is the reason we went with them. However, we asked several questions explicitly and were given misleading answers.”
Alliant Credit Union
Why it stands out
What borrowers say
“Among the many lenders I encountered, Alliant quickly rose to the top. Their initial rate quote was highly competitive, but what truly made the difference was the exceptional support I received.”
“Alliant Advantage Mortgage program allows for a loan of up to $650,000 without a down payment or mortgage insurance payments ”
Other Big Mortgage Lenders in Colorado
Rocket Mortgage
Guild Mortgage
Quick Comparison Summary
Lender
Pick
HQ
Interest Rates (historical)
Lender Fees
Notable Programs / Notes
Website
Full Review
Tomo Mortgage
Best Overall (Low Rates)
New York, NY
~0.30% below median (historical)
$0
Named Best Online Lender by Bankrate; online personalized rates; no lending fees; no refi currently
tomo.com
Read full review
FirstBank
Best For In-Person Service
Lakewood, CO
~0.38% below median (historical)
~$1,250
Competitive rates, in-person options.
efirstbank.com
Read full review
AimLoan
Best for Low-Cost Loans Without the Frills
San Diego, CA
~0.33% below median (historical)
~$995
Competitive rates, fully digital.
aimloan.com
Read full review
Alliant Credit Union
Best for Low Down Payment Loans
Chicago, IL
~0.31% below median (historical)
~$950
Alliant offers a broad range of mortgage solutions with a focus on affordability, variety, and convenience.
alliantcreditunion.org
Read full review
See all reviews of Colorado Mortgage Lenders
Low rates, no gotchas