Boulder has less developable land within its city limits than almost any similarly sized city in America — by design. The Blue Line ordinance has capped hillside construction since 1959. Open space acquisition programs have permanently preserved more than 45,000 acres, removing them from residential use forever. Height limits and strict zoning govern infill density across every neighborhood. The practical result is a city where new residential construction within Boulder proper is genuinely rare — where a vacant lot in Pine Brook Hills, a teardown opportunity in NoBo, or an available parcel in Gunbarrel represents a genuine scarcity event. When one of these opportunities surfaces, buyers who are prepared with a One-Time Close Construction loan can act. Buyers waiting to figure out the financing after they find the lot typically cannot.
Most construction activity serving Boulder’s market happens in the surrounding communities that the city’s policy constraints have pushed development toward: Erie, Superior, Louisville, and Lafayette in Boulder County; Longmont to the north; and Broomfield to the southeast. These communities offer what Boulder proper cannot — available land at scale, active builder inventories, and master-planned communities with a full range of amenity packages. Meritage Homes, Markel Homes, and McStain Enterprises are among the most active builders in the Boulder-Longmont corridor, collectively operating across more than 20 communities. Across the broader area, buyers can access 169 Boulder-area communities with 715 available new construction homes and 368 floor plans as of current market data. Within Boulder itself, custom builders like Cottonwood Custom Builders, Melton Design Build, and Hammerwell Incorporated serve the rare land opportunities that do arise.
Boulder County’s 2026 conforming loan limit of $879,750 — the highest in the metro — creates an important construction loan reality: even a mid-tier new build in the Boulder area is likely to require a jumbo construction loan. Land costs in Boulder proper are significant, and construction costs in Colorado have risen substantially. A custom home in Pine Brook Hills or a semi-custom build in an Erie master-planned community with premium finishes will commonly exceed the conforming limit when land, construction, and soft costs are totaled. Ryan Lehrman, NMLS #235295, structures One-Time Close Construction loans across the full range of Boulder-area construction scenarios — from standard conventional builds in Longmont communities to Jumbo custom estate builds in Boulder’s hillside neighborhoods.
The metro currently has over 357 active new construction communities. Painted Prairie, near Denver International Airport along the Aurora border, is one of the most talked-about master-planned developments in the region — a walkable, neo-traditional community with multiple builders active and a town center underway. Reunion in Commerce City features 10 neighborhood parks, 8 acres of lakes, and a resort-style amenity center with a pool, gym, and community spaces. Arcadia by D.R. Horton, 10 miles from downtown and adjacent to Cherry Creek State Park, offers modern paired homes for buyers who want urban proximity without urban prices. Active builders across the metro — Century Communities, Richmond American, D.R. Horton, Toll Brothers, Brookfield Residential, and MDC Holdings — give buyers meaningful choices at multiple price points and locations.
There is also one Denver-specific construction reality that buyers and their lenders need to understand before breaking ground: Colorado’s soil is rich in Bentonite clay, a reactive material that expands when wet and contracts when dry. Older homes across Denver show the effects — foundation movement, cracked driveways, uneven floors. Modern builders address this with structural wood floors, deep caissons, and pier-and-beam systems that isolate the structure from soil movement. This engineering adds cost to any custom build and should be factored into the project budget from the beginning. Ryan Lehrman, NMLS #235295, structures One-Time Close Construction loans with these Denver-specific project realities accounted for.
A One-Time Close Construction Mortgage Loan — also called a
Construction-to-Permanent loan or a Single-Close loan — combines the construction financing and permanent mortgage into a single loan with a single closing.
The process moves through three phases:
The Construction Phase: Funds are disbursed to your builder in draws as construction milestones are verified and completed. You make interest-only payments on the drawn balance during this period. Your permanent rate is already locked at closing — before the first draw — so you are not exposed to rate movements during the build, whether the construction timeline runs 6 months or 18.
The Conversion Phase: Upon the builder's receipt of a certificate of occupancy, the loan automatically converts from construction financing to a permanent mortgage. There is no second closing, no second appraisal, and no second underwriting — the transition happens within the structure of the original loan.
The Permanent Phase: Regular mortgage payments begin on the fully amortizing permanent loan at the rate locked before construction started, regardless of where market rates have moved during the build period.
Key Features of Boulder One-Time Close Construction Loans
Single closing, single appraisal, single set of closing costs
Rate locked before construction begins — no rate risk during the build
Automatic conversion from construction to permanent upon certificate of occupancy
Interest-only payments during the draw period
Standard, Jumbo, and Physician program options available
Works with licensed general contractors and production builders throughout the Boulder-Longmont corridor
Available for primary residences, second homes, and select investment properties
Colorado Bentonite soil engineering cost awareness built into project budget review
For builds in the Boulder-Longmont corridor where the total project cost falls within Boulder County’s $879,750 conforming limit — typically production-built homes in Longmont, Erie, Superior, or Lafayette communities where land costs are lower and construction can be structured at conventional loan amounts. These programs offer the most favorable rates and lowest down payment requirements. Meritage Homes, Markel Homes, and McStain Enterprises build in this tier across active communities that Ryan’s programs can finance efficiently.
The most relevant program for most Boulder-area custom and semi-custom construction, given that land costs within Boulder proper and premium finish specifications in surrounding communities routinely push total project costs above $879,750. Jumbo One-Time Close programs extend construction financing through $2–$3 million and above, maintaining the single-closing structure and rate-lock protection. Custom builds in Pine Brook Hills, Gunbarrel, NoBo, and premium lots in Erie or Superior frequently require this program. Down payment requirements are typically 10–20% depending on total project cost and lender.
Physicians building in the Boulder area — whether on a rare lot within the city or in one of the surrounding communities close to BCH Foothills Hospital or a UCHealth clinic — can access One-Time Close Construction programs carrying physician-specific qualifying accommodations: no PMI, favorable student loan treatment, and employment contract qualifying for those transitioning from residency to attending practice during the build period.
For buyers acquiring a lot in Pine Brook Hills, Chautauqua Heights, or within Boulder’s city limits and contracting directly with a licensed custom builder — Cottonwood Custom Builders, Melton Design Build, Hammerwell Incorporated, or another qualified Colorado contractor — the Custom Build program structures financing around the owner’s selected builder and project specifications. This requires more complete documentation upfront: full architectural plans, a signed builder contract with itemized budget including contingency, and builder license and insurance verification. The single-closing, rate-locked structure still applies. These projects are commonly in Jumbo or Super-Jumbo territory given Boulder’s land costs and the typical scope of custom builds in these neighborhoods.
Erie
Erie has emerged as one of the most active new construction markets in the Boulder-Longmont corridor. Located between Boulder and Denver on the Hwy 287/I-25 corridor, Erie offers Front Range mountain views, Boulder Valley School District and St. Vrain Valley School District access, and a growing amenity base that includes parks, trails, and retail development. Multiple production builders are active in Erie — including Meritage Homes, Century Communities, and Richmond American — with communities across a range of price points from the mid-$500,000s to $1 million and above for larger homes. Erie's commute to Boulder is approximately 20–25 minutes, making it a realistic primary residence option for Boulder-area employees and families priced out of the city itself.
Superior and Louisville
Superior and Louisville sit directly east of Boulder on US-36, offering the shortest commutes of any Boulder County suburb — 10 to 15 minutes to central Boulder — with residential neighborhoods that have maintained strong value through every market cycle. New construction inventory in these communities is more limited than in Erie or Longmont due to build-out levels, but infill opportunities and smaller community developments continue to emerge. Buyers building in Superior or Louisville are often choosing these locations specifically for Boulder proximity, meaning construction loan amounts here commonly fall in the Jumbo range. McStain Enterprises and other Boulder County-focused builders are most active in this corridor.
Pine Brook Hills and Gunbarrel — Within Boulder
The rare land opportunities that arise within Boulder city limits are concentrated in two areas: Pine Brook Hills (foothills lots above the city, subject to Blue Line elevation constraints, with breathtaking views and mountain character) and Gunbarrel (northeast Boulder, more suburban in character, larger lots, the site of the Boulder Country Club). Custom builds on Pine Brook Hills lots represent some of the most distinctive residential construction in Colorado — mountain estates on forested parcels with Continental Divide views — and virtually all require Jumbo or Super-Jumbo construction financing given land values. Gunbarrel custom builds are more accessible, with some projects falling within the conforming range and others requiring Jumbo structures depending on scope and finish level.
Construction loan depth — One-Time Close is a specialty product that most lenders handle poorly; Ryan structures these loans routinely and manages the draw process, milestone verification, and lender communication through the full build
Boulder-area builder familiarity — knowledge of Meritage, Markel, McStain, and the custom builder ecosystem across Pine Brook Hills and Gunbarrel
Jumbo and Physician construction capability — programs covering builds above $879,750 in Boulder County, including physician-specific construction structures
Colorado Bentonite soil awareness — structures project budgets with expansive clay soil engineering costs included, so they don't surface as surprises mid-construction
Rate-lock strategy — Boulder-area custom builds can take 12 to 18 months; Ryan advises on rate lock structure and extension options appropriate for each project's realistic timeline
Blue Line and open space regulatory knowledge — understands which lots in the hills above Boulder are developable and which are not before a construction loan is structured around the wrong parcel
Ryan Lehrman, NMLS #235295
Borrower profile: Primary residence, second home, and select investment property builds eligible; standard income documentation for conventional programs; physician and Jumbo programs available with program-specific qualifying criteria
Builder requirements: Licensed and insured general contractor in Colorado required; production builders in approved Boulder-area communities are pre-qualified by most lenders; custom builders require license and insurance documentation, builder contract review, and project budget verification
Project documentation: Completed architectural plans or production builder specs; signed builder contract with itemized budget including contingency (typically 5–10%); as-completed appraisal supporting total project value; Blue Line compliance documentation for hillside lots in Boulder
Down payment: Typically 5% for standard conforming programs; 10–20% for Jumbo One-Time Close; physician programs may offer lower requirements depending on loan amount and program
Pre-construction consultation — Ryan reviews your builder, lot situation, project budget, and income profile to confirm the program match and total qualifying range before you commit to a build contract; for Boulder hillside lots, Blue Line compliance and as-completed valuation support are reviewed at this stage
Documentation assembly — architectural plans or production specs, signed builder contract with itemized budget, builder license and insurance verification, lot deed or purchase contract, standard income and asset documentation, and Bentonite engineering specifications included in budget review for applicable lots
Construction appraisal — lender orders an appraisal based on plans and specs to establish the as-completed value; for Boulder-area properties, this appraisal governs the loan amount and must support total project cost against comparable sales in the relevant neighborhood or community
Closing and construction begins — single closing executed before construction starts; rate locked; draw schedule established with builder; construction proceeds with funds disbursed at verified milestones, typically with a lender inspection at each draw
Certificate of occupancy and conversion — upon completion and CO issuance, the loan converts automatically to permanent financing; regular mortgage payments begin; no second closing, no additional underwriting
Yes — it's rare, but possible. The opportunities that exist within Boulder proper are concentrated in infill lots in NoBo and Gunbarrel, teardown-and-rebuild scenarios in established neighborhoods, and the occasional available hillside parcel in Pine Brook Hills that is below the Blue Line elevation threshold (5,750 feet) and complies with current zoning. The Blue Line is the most important constraint for hillside lots — if a parcel sits above the Blue Line contour, residential construction is prohibited regardless of what the property may have been used for historically. Ryan reviews Blue Line compliance as part of any construction loan consultation involving a Boulder hillside lot, before the financing structure is built around a parcel that may not be developable.
Yes. Physician One-Time Close Construction programs combine physician-specific qualifying accommodations — no PMI, favorable student loan treatment, employment contract qualifying for attendings who haven't yet started — with the single-closing construction-to-permanent structure. A custom build in Gunbarrel, where lot sizes are larger and the build scope typically supports a loan in the $1 million to $1.5 million range, falls within the physician Jumbo construction program tier. If you're a resident completing a GME rotation at BCH who has signed an attending contract, Ryan can structure the construction loan pre-approval based on your contract income before your first attending paycheck arrives — so the build can begin on your timeline rather than waiting for employment income history to accumulate.
The initial consultation is where we work through this. Ryan reviews your lot cost (or purchase price if you're buying land), your builder's estimated construction cost, and your intended finish specifications to develop a realistic total project cost before any loan application is filed. In Erie, a production-built home with standard finishes from Meritage or Markel will commonly fall within the $879,750 conforming limit, allowing the most favorable rate and down payment structure. A larger home, premium upgrades, or a semi-custom scope
Bentonite clay is present throughout Colorado's Front Range soils, including in the Boulder area. This reactive clay expands when wet and contracts when dry, creating cyclical pressure on foundations that can cause cracking, heaving, and structural movement in homes built without adequate soil engineering mitigation. Modern builders across the Boulder corridor address this through structural wood floors, deep-drilled caissons or piers, and pier-and-beam foundation systems that isolate the structure from the soil movement cycle. These engineering solutions add meaningful cost to any custom build — often $30,000 to $80,000 or more depending on lot conditions and home size — and should be included in the construction budget from the start rather than discovered as a cost overrun mid-build. Ryan builds Bentonite mitigation cost awareness into every Boulder-area construction loan consultation so the budget reflects the project's actual requirements.
Building your new home in Boulder starts here. Let’s talk through your builder, your site, and your timeline.
Originally from Harrisburg, Pennsylvania, I moved to Phoenix to attend Arizona State University and have proudly called Phoenix home ever since.
My journey into the mortgage industry began with a friend’s encouragement, who saw how my energy and people-first mindset could make a difference. He was right — I found my calling.
I’ve always embraced what makes me different. With ADHD as my secret weapon, I thrive in fast-paced, detail-heavy environments. I’ve built my career on clear communication, creative problem-solving, and putting clients first, always.
Outside of work, my greatest motivation is my wife and three amazing kids. I’d be honored to help guide you through your lending journey with care, clarity, and commitment.
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