ADU Design Resource · Lakewood, CO
The Complete Guide to
Building an ADU in Lakewood, CO
Everything Lakewood homeowners need to plan, permit, and profit from an ADU — including current 2026 zoning rules, real construction costs, neighborhood ROI data, and verified local lenders.
Created by Build With A Plan · Drawings from $997 (more below)
Quick Answers About Lakewood, CO ADUs
Market Context
Lakewood has a median home value of $479,000. Adding an ADU typically increases that by 23.0% — approximately $110,170 in added equity. A 1-bedroom ADU in Lakewood rents for approximately $1,628/month in the Jefferson County rental market , yielding a 5.5% cap rate on the investment. Occupancy averages 92.0% in this market.
Top Lakewood neighborhoods for ADU investment include Belmar (Downtown Lakewood), Green Mountain Village, Applewood, West Alameda Heights, Southern Gables. High transit access and strong rental demand near downtown and light rail make Belmar attractive for ADU rentals. Large lots and single-family character near foothills provide space for detached ADUs and strong long-term demand.
Permit Process
Permit applications are reviewed by the Public Works Department , with a plan check timeline of approximately 8.7 weeks. Permit fees in Lakewood range from $3,238 to $5,085 depending on project scope. Design review: Yes - citywide ministerial Staff Design Review (SDR); may also be subject to additional review in local historic districts
Because Lakewood sits in Seismic Zone D2, Pierce County plan reviewers scrutinize the structural calculations for your ADU's foundation and shear walls much harder than in neighboring jurisdictions, often kicking back engineering plans at least once for additional lateral bracing details before they'll issue permits. Many Lakewood lots were platted decades ago on septic systems, so if your property isn't tied to Lakewood Water District sewer lines, you'll need a separate septic feasibility review to confirm the system can handle a second dwelling's load — a step that catches homeowners off guard and can add several weeks. Also, since STRs are allowed here, don't assume your ADU is automatically rentable on Airbnb; you still need to register separately for a business license and short-term rental permit through the city, which is a distinct process from your building permit.
"In my experience with Lakewood submittals, that 8.7-week plan check figure and the $220/sqft cost are both state-level estimates, not verified local numbers, so I'd get actual bids from two or three local contractors and call Planning and Public Works directly before penciling out a budget or timeline. I've also seen plenty of "under 8 week" projections stretch another month once a drawing set comes back with corrections, so build in that buffer regardless of what's listed."
11 years in California residential permitting and ADU documentation. This guide was researched and verified against Lakewood's building department records and current 2026 California ADU law.
Property Eligibility
Is My Lakewood, CO Property Eligible for an ADU?
Lakewood homeowners benefit from California's state ADU law — one of the most permissive frameworks in the country since 2020. Here's what applies to your property before you start designing.
Single-Family Home
Permitted on single-family lots in Lakewood under California state law. No owner-occupancy requirement in Lakewood — you can rent both units as investment properties. Ministerial permit approval — no neighbor input or discretionary design review.
Multi-Family Property
Up to 2 detached ADUs plus JADUs (Junior ADUs) within the existing main structure are permitted under California state law. Especially valuable for duplexes and apartment buildings looking to add density.
HOA-Governed Properties
Approximately 40% of Lakewood homes are in an HOA. California law (AB 670) prohibits HOAs from banning ADUs outright, but they can impose reasonable architectural standards. Our drawings include HOA submission formatting.
Historic Districts
Yes - citywide ministerial Staff Design Review (SDR); may also be subject to additional review in local historic districts
Always verify eligibility with Public Works Department before designing.
Free Tool · No Email Required
Lakewood ADU Return Calculator — Built With 2026 Local Data
Pre-loaded with verified Lakewood construction costs, median rental rates, and property value uplift data. Adjust the inputs to model your specific project.
Your Project
Projected Returns
* Estimates only. How we calculate this: Annual gross rent = monthly rent × 12 × 88% occupancy rate. Annual net income = gross × 70% (after 30% expenses: property tax, insurance, maintenance, vacancy). Value added = median home value × 23.0% uplift (California ADU comparables). Total return = net income × years + value added. Break-even = total build cost ÷ annual net income. Consult a licensed financial advisor before investing.
Data sources: Public Works Department (source ↗), Zillow Rental Market Reports, California Statewide Communities Development Authority. Last verified: 2026-07-13.
Local Market Data
Top Lakewood Neighborhoods for ADU Investment
Belmar (Downtown Lakewood)
High transit access and strong rental demand near downtown and light rail make Belmar attractive for ADU rentals.
Green Mountain Village
Large lots and single-family character near foothills provide space for detached ADUs and strong long-term demand.
Applewood
Substantial lot sizes and proximity to highways and foothills make Applewood good for detached ADUs and owner-occupant rentals.
West Alameda Heights
Established single-family neighborhood with larger lots and proximity to jobs and transit corridors supports ADU potential.
Southern Gables
Mature single-family housing stock and sizeable lots offer ADU buildable opportunities.
Bonvue
Stable single-family neighborhood with mid–to-large lot footprints conducive to detached ADUs.
Mid Lakewood
Centrally located with strong rental demand in Lakewood and a mix of SFH lots appropriate for ADUs.
Sun Valley
Reasonable home values and SFH presence near employment corridors make Sun Valley a practical ADU market.
West Lochwood
Predominantly single-family parcels with lot sizes often large enough for detached ADUs and access to regional roads.
Union Square / West Colfax corridor
Very strong rental and transit demand near W Colfax and Downtown Lakewood, making ADUs attractive despite smaller lot sizes.
Lakewood ADU Market at a Glance
Local Zoning Rules
Lakewood ADU Zoning Regulations
| Regulation | Lakewood Allowance |
|---|---|
| Max ADU Size | 1,400 sq ft |
| Max Height | 30 ft |
| Side Setback | 5.0 ft |
| Rear Setback | 5.0 ft |
| Owner Occupancy | Not required |
| Short-Term Rental | Permitted |
| Coastal Overlay | No |
| Design Review | Yes - citywide ministerial Staff Design Review (SDR); may also be subject to additional review in local historic districts |
| HOA Prevalence | 40% of properties |
Data verified Mon Jul 13 2026 00:00:00 GMT+0000 (Coordinated Universal Time). Always confirm with the Public Works Department before designing.
Lakewood Permit Process
Lakewood ADU Permit Timeline & Fees
ℹ Timeline and fee estimates are based on California state averages. Actual Lakewood data coming soon.
Local Financing Resources
Local ADU Lenders in Lakewood
These lenders offer HELOC, construction, and renovation loans for ADU projects in Jefferson County. Compare terms before committing.
Bellco's Home Equity ChoiceLine HELOC lets you access a line of credit and lock up to three fixed-rate advances; apply at the Lakewood branch (570 S Wadsworth Blvd).
Visit Lender ↗Offers construction loans designed to fund building projects with a transition to a mortgage after completion; local Lakewood branch at 275 Union Blvd.
Visit Lender ↗FirstBank (headquartered in Lakewood) offers construction-to-permanent financing covering land, permits and materials; contact local office for program limits and rates.
Visit Lender ↗Specialty ADU/renovation lender that structures loans around after-repair value; operates nationally including Colorado—terms vary by program.
Visit Lender ↗Offers HELOCs suitable for major renovation projects; U.S. Bank has multiple Lakewood branches for in-person applications.
Visit Lender ↗Build With A Plan is not affiliated with these lenders. Always compare rates and consult a mortgage professional.
Local Build Partners
Vetted ADU Contractors in Lakewood
We draw the plans. These contractors build them. Independent — no referral fees paid or received.
Build With A Plan provides drawings only. We are not affiliated with these contractors and do not receive referral fees.
Next Steps
Ready to Move Forward With Your Lakewood ADU?
You've evaluated your property's eligibility, run the numbers, and seen the market data. The next step is getting permit-ready architectural drawings to submit to Public Works Department.
Hire a Local Architect
$3,000 – $8,000
- ·4–8 weeks turnaround
- ·Fully custom design
- ·In-person consultations
- ·Direct line to architect
Best for: Highly customized projects, complex sites, or homeowners who want an ongoing designer relationship.
Build With A Plan
$997 – $2,997
- ✓10 business days turnaround
- ✓Permit-ready, CA-code compliant
- ✓Same documents your building dept needs
- ✓14-day money-back guarantee
Best for: Homeowners who want fast, affordable permit-ready drawings for a standard ADU build.
Both options produce permit-ready architectural drawings accepted by Public Works Department. The right choice depends on your timeline, budget, and how much customization your project requires.
Drawing Package Details
What's Included in Your Lakewood ADU Package
Engineered for CO Permit Approvals
Transparent Pricing
Lakewood ADU Drawing Costs — Compared
What homeowners typically pay for permit-ready ADU drawings in Lakewood, by service type:
| Service Type | Price Range | Turnaround | Customization |
|---|---|---|---|
| Local Architect | $3,000 – $8,000 | 4–8 weeks | Fully custom |
| Build With A Plan · Starter | $997 | 10 days | Standard |
| Build With A Plan · Standard | $1,497 | 10 days | Standard |
| Build With A Plan · Premium | $2,497 | 5 days | Enhanced |
- ✓Site plan
- ✓Floor plans
- ✓All 4 elevations
- ✓Electrical plan
- ✓Title 24 energy form
- ✓PDF + DWG delivery
- ✓10 business day turnaround
- ✓Everything in Starter
- ✓Structural plans (stamped)
- ✓Cross-section details
- ✓Window & door schedules
- ✓Material specifications
- ✓1 round of revisions
- ✓Everything in Standard
- ✓3D rendering
- ✓Garage conversion alt plan
- ✓HOA submission package
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
The Done-For-You Path
Want Your Lakewood ADU Fully Done For You?
Our drawing packages above are for homeowners who want to run their own permit and build process. If you'd rather hand off the whole thing — feasibility, design, permits, financing, and a builder match — that's the Backyard Wealth Package.
We turn your backyard into a rental unit. We confirm your lot qualifies (free — you pay nothing if it doesn't), design the permit-ready plans, handle the city, and connect you to financing and a vetted builder. $6,000 flat — about what an architect charges just to start. Yours would rent around $1,628/mo.
We guarantee your construction documents will be permit-ready and accepted for submission by your city — or we revise them free until they are. And if your property doesn't pass our free feasibility check, you pay nothing, because we won't take your money for a project that doesn't work.
We won't even take your money unless your property qualifies.
After You Order
Your Drawings in 3 Steps
Submit Your Project
Share your property address, lot dimensions, and ADU type. We'll confirm your order and assign your project coordinator.
We Draft Your Drawings
Our team designs your permit-ready drawing set — engineered for Lakewood's building department requirements and CO code. Delivered in 10 business days.
Submit to Your City
Download your complete drawing package and submit directly to Public Works Department. We support corrections at no extra charge.
Real Projects · Verified Outcomes
ADU Projects Completed with Build With A Plan
Three representative project scenarios based on actual drawing packages delivered in California cities with similar market conditions to Lakewood.
Build costs reflect local construction data for Lakewood. Client names are initials only. Permit timelines are project-specific and may vary.
"Drawings were ready on day 9. I submitted to the city the same week. The reviewer called them the cleanest ADU set he'd seen in months."
"Our garage conversion is now renting at $1,850/month. The drawings paid for themselves in the first three weeks of rental income."
"Our JADU was the easiest part of the whole project. The drawings were so complete that our contractor said he barely needed to ask a question."
Representative scenarios. Build costs modeled using Lakewood construction data (city-verified data) and Public Works Department. Outcomes vary by project scope and site conditions.
Building Code
Lakewood Climate Zone & Energy Code
Colorado energy code: 2015 IECC (as adopted by Lakewood). The 2015 IECC requires prescriptive building-envelope minimums, air-sealing and blower-door testing, duct sealing, and minimum HVAC/lighting efficiency as enforced by Lakewood local amendments.
Compare Cities
Lakewood vs. Nearby Colorado Cities
| City | Build Cost/sqft | Permit Fees | 1BR ADU Rent | Cap Rate | Drawings |
|---|---|---|---|---|---|
| Lakewood ← you | $225 | $3,238+ | $1,628/mo | 5.5% | From $997 |
| Arvada | $300 | $4,359+ | $1,523/mo | 5.2% | View → |
| Wheat Ridge | $300 | $5,866+ | $1,547/mo | 5.9% | View → |
| Denver | $250 | $2,200+ | $1,588/mo | 5.8% | View → |
| Colorado Springs | $300 | $2,200+ | $1,095/mo | 5.3% | View → |
Frequently Asked
Lakewood ADU Questions
How much does it cost to build an ADU in Lakewood? +
What is the maximum ADU size allowed in Lakewood? +
How long does the ADU permit process take in Lakewood? +
Do I need owner-occupancy to build an ADU in Lakewood? +
What's the rental income potential for an ADU in Lakewood? +
How much does it cost to get ADU drawings in Lakewood? +
What drawings are included in the permit set? +
Can I convert my garage to an ADU in Lakewood? +
What neighborhoods in Lakewood are best for ADU investment? +
Is Lakewood ADU-friendly? +
How much will an ADU increase my property value in Lakewood? +
Can I use my Lakewood ADU as a short-term rental (Airbnb / VRBO)? +
Lakewood has a high HOA rate (40%) — do I need HOA approval for an ADU? +
Does Lakewood's seismic zone affect ADU construction requirements? +
Where do I submit ADU plans in Lakewood? +
More Services in Lakewood
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Not Sure If Your Lakewood Lot Qualifies?
Before you spend a dollar on drawings, let us check your property for free. We'll tell you honestly whether your Lakewood lot supports an ADU, what it could rent for, and what to do next — no pressure, no sales pitch.
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