Designing Your ADU in Winter for a Spring Build

Thinking about an ADU? Winter is the best time to design and permit your build so construction can start right on schedule in spring.
October 22, 2025
ADUs
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Why Denver Homeowners Should Start Planning Now

Building an Accessory Dwelling Unit (ADU) is one of the smartest ways to add value, flexibility, and long-term income potential to your property. But if you wait until spring to start planning, you’ll already be behind.

At Denver Dream Builders, we help homeowners design, permit, and build ADUs that fit their lot, their lifestyle, and their goals — and winter is the perfect time to start.

1. Winter Is the Ideal Time to Begin ADU Design

Most homeowners assume spring is the time to plan — but by then, contractors and city planners are buried in backlogs.

Starting your ADU design in winter gives you a huge head start:

  • Faster permit approvals: Fewer projects in the queue mean quicker review times.
  • More design availability: Architects and engineers have bandwidth for revisions and feasibility studies.
  • Better scheduling: You’ll secure your contractor’s spring start date before everyone else.

Think of winter as your pre-construction season — when the paperwork, planning, and approvals move faster behind the scenes.

2. Start With a Feasibility and Zoning Review

Before any sketches or designs, it’s critical to confirm that your property qualifies for an ADU. Denver and surrounding cities (like Lakewood, Arvada, and Aurora) have different zoning codes that define where and how you can build.

During our feasibility phase, we:

  • Review your zoning district (U-SU-A1, E-SU-D1x, etc.)
  • Check lot size, setbacks, and height limits
  • Identify utility access points and connection requirements
  • Flag any historic overlays or HOA restrictions

This early research saves homeowners from costly redesigns and ensures your ADU concept is code-compliant from day one.

3. Winter Design Work Sets You Up for a Spring Build

A full ADU build involves several stages — and winter is when you want to knock out the first half:

  1. Site survey & measurements – 1–2 weeks
  2. Architectural & structural drawings – 3–4 weeks
  3. Zoning & code review – 2–3 weeks
  4. Permit submittal & revisions – 4–8 weeks

By starting those steps between December and February, you’ll be cleared for construction right as the weather turns in April or May — while most homeowners are still waiting on permits.

4. You’ll Secure Better Pricing and Scheduling

Demand drives pricing. In spring, when dozens of Denver homeowners flood the system with remodel and addition requests, contractors and material suppliers raise rates.

By finalizing your ADU design in winter, you can:

  • Lock in off-season pricing before costs rise
  • Reserve top crews while schedules are still open
  • Prevent delays caused by back-ordered materials

For high-demand materials like lumber, windows, or electrical components, early ordering can shave weeks off your build timeline.

5. Tailor Your ADU Design to Your Property Goals

Every homeowner builds for a different reason. Some want a rental unit to generate passive income. Others need space for family, parents, or a home office.

During the design process, we help tailor your layout and budget to match your priorities:

  • Rental income ADUs: Optimize for privacy, soundproofing, and separate entry.
  • Family or in-law suites: Create universal design features like wider doors and step-free entries.
  • Home offices or studios: Focus on insulation, lighting, and layout flexibility.

Winter’s slower pace gives you time to make thoughtful decisions without rushing through design revisions.

6. Understand the Difference Between Detached and Internal ADUs

If you’re just getting started, you’ll likely choose between these two ADU types:

  • Detached ADU: A standalone structure, often in the backyard or over a garage.
  • Internal ADU: A converted space within your main home — such as a basement, attic, or over-garage apartment.

Detached ADUs typically take longer to permit and build but offer more independence and higher rental potential.

Internal ADUs, like basement conversions, can often be completed faster — sometimes within 3–4 months.

We help homeowners evaluate both options and pick the one that fits your property and lifestyle best.

7. ADUs Add Long-Term Value and Flexibility

A well-built ADU can increase property value by 25–35%, depending on the neighborhood.

But the benefits go far beyond resale:

  • Generate rental income to offset your mortgage
  • Support multigenerational living
  • Provide flexible work-from-home space
  • Create future resale appeal for buyers seeking dual-living options

Starting design work early ensures your investment is ready to perform by summer.

8. Partner With a Denver ADU Builder Who Knows the Process

Building an ADU in Denver isn’t just construction — it’s coordination. You’ll need a team that understands zoning, utilities, and city communication.

At Denver Dream Builders, we handle every step:

  • Zoning research & feasibility
  • Architectural coordination
  • Engineering & permitting
  • Construction management & inspections

Our design-build approach ensures your project moves seamlessly from concept to completion — with one accountable team guiding the process.

9. Winter Prep, Spring Start, Summer Move-In

By starting now, here’s what your ideal timeline could look like:

Phase Timeline Outcome
Feasibility & Design Dec–Feb Plans finalized & permits submitted
Permitting & Revisions Feb–Apr City approval received
Construction Begins Apr–May Foundation & framing start
Move-In or Rental Ready Jul–Aug New ADU completed before fall

That’s a complete ADU journey in less than a year — made possible by starting during the “off-season.”

10. Build Smart. Start Now.

Winter may not seem like the obvious time to begin a construction project, but it’s the best time to prepare for one.

If you’ve been thinking about adding an ADU, this is your sign to start planning before the spring rush hits.

From zoning checks to design and build scheduling, Denver Dream Builders will handle every detail so you can move into your new space by summer.

📞 Schedule your ADU design consultation today — and see what’s possible for your property this spring.

🔗 Contact Denver Dream Builders

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