Home Addition Drawings · Lakewood, CO
Permit-Ready Home Addition
Drawings for Lakewood, CO
Expand your home with a permitted room addition, second story, or family room extension. We deliver complete, code-compliant drawing sets for Lakewood's building department — in 10 business days, starting at $1,497.
14-day money-back guarantee · 10 business day turnaround
Local Intelligence
What Lakewood Homeowners Need to Know Before Submitting
Size & Zoning Rules
Any new square footage added to your Lakewood home counts against the same zoning envelope that governs ADU size, meaning large additions may affect your ability to add a future ADU. Lakewood's current ADU size cap is 1,400 sq ft — generous enough to accommodate most project types.
Lakewood does not impose an owner-occupancy requirement, so you can rent both the main home and any ADU or conversion as investment units.
If the addition creates a second unit or is later converted to a rental, Lakewood's ADU market supports approximately $1,923/month for a 2-bedroom unit.
Permit Process & Fees
Public Works Department permit fees for this project type typically range from $3,238 to $5,085 depending on project valuation and scope. Plan check runs approximately 8.7 weeks — though each correction cycle adds 3–6 weeks, which is why code-compliant drawings matter so much.
Addition permit packages submitted to Public Works Department must include a site plan, floor plans, all four elevations, an electrical plan, and energy compliance documentation — plus stamped structural drawings are always required for any load-bearing elements, second-story work, or new foundation.
Visit Public Works Department ↗Construction Cost Context
Lakewood's home addition construction costs run $180–$450 per square foot — a wide range driven by labor markets, local code complexity, and finish level. Our drawings are priced at a fraction of what a full-service architect would charge to produce the same permit set.
⚠ Common Pitfall in Lakewood
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.
Expert Verdict — Marcus Reid, Licensed Designer
"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."
Market Context
Lakewood has a median home value of $479,000. Comparable renovation projects in this market typically add 23.0% to resale value.
Neighborhoods in Lakewood with the strongest home addition and resale value potential 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.
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.
Lakewood falls within Seismic Design Category Seismic Design Category B (residential), which affects structural requirements for any new addition tying into the existing structure.
Local Financing Resources
Local Home Addition Lenders in Lakewood
These lenders offer HELOC, construction, and renovation loans for home addition 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 Home Addition Contractors in Lakewood
We draw the plans. These contractors build the addition. 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.
Drawing Package Details
What's Included in Your Lakewood Home Addition Package
Transparent Pricing
Lakewood Home Addition Drawing Packages
One-time fee. No retainer. No hourly billing.
- ✓Site plan
- ✓Floor plans (existing + proposed)
- ✓All 4 elevations
- ✓Electrical plan
- ✓Title 24 energy compliance
- ✓PDF + DWG delivery
- ✓10 business day turnaround
- ✓Everything in Starter
- ✓Stamped structural drawings
- ✓Foundation plan
- ✓Roof framing plan
- ✓Window & door schedules
- ✓1 round of revisions
- ✓Everything in Standard
- ✓3D rendering
- ✓Cross-section details
- ✓Material specifications
- ✓HOA submission package
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
After You Order
Your Addition Drawings in 3 Steps
Submit Your Project Details
Share your property address, existing floor plan (if available), and the addition scope. We assign your project coordinator within 4 business hours.
We Draft Your Drawings
Our team designs your complete addition drawing set — engineered for Lakewood's building department requirements and CO CBC code. Delivered in 10 business days.
Submit to Your Building Dept
Download your complete package and submit to Public Works Department. We support plan check corrections at no extra charge.
Common Questions
Lakewood Home Addition FAQs
Do I need a permit for a home addition in Lakewood? +
Yes — any structural addition to your home in Lakewood requires a building permit. This applies to room additions, second-story additions, sunrooms, and attached garages. You'll need permit-ready drawings before the building department will accept your application. Our packages are formatted specifically for Lakewood's submittal requirements.
How much does a home addition cost in Lakewood? +
Home additions in Lakewood typically cost between $220.0–$300.0 per square foot depending on the scope, finishes, and structural complexity. A 600 sq ft addition ranges from $132,000 to $180,000. Second-story additions cost more than ground-floor extensions due to structural requirements. Our drawing packages start at $1,497 — a fraction of local architectural fees.
What drawings are required to permit a home addition in Lakewood? +
Lakewood's building department requires: a site plan showing the addition's footprint and setbacks, floor plans for all affected levels, all four exterior elevations, an electrical plan, and energy compliance (Title 24 in California). Structural plans stamped by a licensed engineer are required for any load-bearing elements — included in our Premium package.
How long does the permit process take for a home addition in Lakewood? +
Plan check in Lakewood typically takes 8.7 weeks for home additions. Additions with structural components may require additional review. Complete, code-compliant drawings significantly reduce correction cycles — each cycle adds 3–6 weeks. Our drawings are engineered to pass on the first submittal.
What setbacks apply to home additions in Lakewood? +
Lakewood enforces minimum setbacks from property lines for all additions: typically 4–5 ft side setbacks and 5 ft rear setbacks, though these vary by zoning district and lot size. Your addition must stay within the buildable envelope. Our site plan documents existing and proposed setbacks and flags any zoning variances required.
Do I need structural drawings for a home addition in Lakewood? +
Yes, for most additions. Any load-bearing walls, new foundations, second-story construction, or roof structure changes require stamped structural drawings from a licensed engineer. California's CBC (California Building Code) and seismic requirements make structural plans mandatory for most addition types. Our Standard and Premium packages include stamped structural drawings.
How much do home addition drawings cost in Lakewood? +
Our permit-ready home addition drawing packages for Lakewood start at $1,497. Local architects and designers typically charge $3,000–$10,000+ for comparable drawing sets. Every package is engineered for CO code compliance and formatted for Lakewood's building department. Turnaround is 10 business days with a 14-day money-back guarantee.
Will a home addition increase my home's value in Lakewood? +
In Lakewood, where median home values are approximately $479,000, a permitted home addition adds square footage that appraisers value as part of the home's gross living area. Return on investment varies by addition type — master suite additions, family room expansions, and additional bedrooms typically recoup 50–75% of project cost in appraised value in CO markets.
Can I add a second story to my home in Lakewood? +
Second-story additions are permitted in most Lakewood residential zones, subject to height limits and design review requirements. California generally requires ministerial permit approval, but some cities impose design compatibility or neighborhood compatibility review for second stories. Our drawings cover all levels including foundation upgrades, shear walls, and roof framing required for vertical additions.
Nearby Cities
Also Available in Lakewood
Adding an ADU instead? See our ADU design service.
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.