Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Home Additions & ADU Across Cameron Park
Adding square footage in Cameron Park means dealing with two things most contractors never see: Wildland-Urban Interface fire codes and El Dorado County’s building department in Placerville. A typical home addition in Cameron Park runs $45,000 to $130,000, while a detached ADU usually lands between $90,000 and $220,000. Those numbers shift fast depending on your lot’s slope, oak tree placement, and how much of the existing structure triggers Chapter 7A fire-hardening requirements. Call (877) 610-1318 and we’ll walk your property, check the WUI map, and give you a written scope with real numbers before you commit to anything.
Why Barrett & Sons Construction Is Cameron Park’s Preferred Home Additions & ADU Company
Barrett & Sons has been owner-operated since 1998. Tom Barrett’s name is on the truck, his sons run the crews, and that’s the kind of accountability a Home Additions & ADU project needs when the county inspector shows up in Placerville with Chapter 7A on his clipboard. We pull every permit, sign off on every inspection, and put every price change in writing before a single nail moves. If the scope changes on a Cameron Park addition, you get a written change order. No surprise invoices at the end. That’s the Barrett way.
Cameron Park homeowners deal with a permit route that runs through El Dorado County, not a local city hall. Flatland contractors get confused by that. We’ve worked those counters, we know the reviewers, and we know what triggers a fire-hardening review versus what slides through. When a Cameron Park client calls, they get a live person from our Sacramento office, and one of our crews serves Cameron Park directly. No voicemail box, no out-of-state call center.
Our Home Additions & ADU Services in Cameron Park
ADU Design & Permitting
Cameron Park sits inside El Dorado County’s Wildland-Urban Interface zone, which means nearly every new detached ADU must meet California Building Code Chapter 7A: ignition-resistant siding, ember-resistant vents, Class A roofing, and defensible-space grading. We handle the design, the county submittal, the corrections, and the inspection scheduling. You get one point of contact from first sketch to final sign-off.

Garage Conversion ADU
Garage conversions in Cameron Park typically run $30,000 to $80,000 depending on whether the existing slab meets current code and how much plumbing has to come through the wall. Many of these garages were built in the 1970s and 1980s with uninsulated walls and no shear bracing. We open them up, add what the county requires, and turn a dead garage into rentable square footage without touching your roofline.

New Detached ADU
A new detached ADU in Cameron Park runs $90,000 to $220,000. That range reflects lot conditions: sloped sites need retaining walls or pier foundations, oak trees dictate setbacks, and parcels near Cameron Park Airport (O61) may trigger an FAA Part 77 obstruction review if the structure gets tall enough. We factor all of that into the first written estimate, not a surprise later.

Junior ADU & Interior Conversion
If your home has an oversized bedroom, a den, or an awkward interior space that never gets used, a Junior ADU conversion is often the fastest permit path in Cameron Park. These smaller conversions frequently avoid the full fire-hardening trigger when the existing footprint stays inside the building envelope. We clarify what the county will classify as a JADU versus a full second unit before you spend money on plans.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Cameron Park
We install materials you can look up. On Cameron Park additions and ADUs, we often spec Techo-Bloc pavers for driveway and walkway tie-ins where the existing concrete has cracked from freeze-thaw cycles, and Cambridge Pavers when the client wants a warmer tone that blends with oak-shaded lots. For foundation and flatwork prep, we use Quikrete products that hold up better through Cameron Park’s winter freeze cycles than the cheap bag mixes some crews pour. If a brand matters to you, we’ll spec it and put it in writing.
Common Home Additions & ADU Problems We See in Cameron Park Homes
- Original wood siding and single-pane windows that trigger WUI compliance. Most Cameron Park homes date from the 1960s through the 1980s. Touch one wall with a permit and the county often requires the entire addition and sometimes the whole structure to meet ignition-resistant standards.
- Sloped, oak-studded lots that complicate foundations. Nearly every parcel in the 95682 ZIP has grade changes. Foundation plans that work on a flat lot in Sacramento fail on a Cameron Park hillside, especially when tree protection zones force a smaller footprint.
- Freeze-thaw popping concrete and cracking walkways. Cameron Park sits at 1,500 to 2,000 feet where winter nights dip below freezing. Exposed flatwork that was poured thin decades ago shows it. Any addition that ties into old slabs needs a honest assessment before framing starts.
- Airport proximity and FAA obstruction review. Parcels along the Cameron Park Airport approaches can face Part 77 height restrictions. A second-story addition or a crane setup on certain lots triggers an FAA evaluation that most contractors have never filed. We have.
Pricing for Home Additions & ADU in Cameron Park, CA
Here are real Cameron Park market numbers. A room addition runs $45,000 to $130,000. A garage conversion runs $30,000 to $80,000. A new detached ADU runs $90,000 to $220,000. A sunroom or enclosed patio conversion runs $25,000 to $70,000 depending on whether it needs foundation work and fire-rated glazing. What moves the price: slope, oak trees, WUI materials upgrades, county plan-check corrections, and whether your existing electrical panel has capacity. We provide written line-item estimates and every change arrives as a signed change order before work proceeds. Call (877) 610-1318 for a free estimate with no trip charge inside the county.
We Also Serve Cities Near Cameron Park
Our crews regularly work in El Dorado Hills, Diamond Springs, Placerville, and Folsom. If you live in one of those communities and you’re comparing contractors for a Cameron Park area project, the same written-scope process applies. And if your addition triggers a kitchen or bath remodel as part of the build, we also handle Kitchen Remodeling in Cameron Park and Bathroom Remodeling in Cameron Park with the same permits-pulled, change-orders-in-writing standard.
Serving Cameron Park, CA - Our Local Coverage Area
We’re based in the Cameron Park area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Home Additions & ADU in Cameron Park
We schedule Cameron Park estimates within a few business days, and there is no trip charge inside the county. Our crews serve Cameron Park directly from our Sacramento office, so we’re not driving from another county to figure out your lot. Call (877) 610-1318 and we’ll get you on the schedule.
Yes. We work across the entire 95682 ZIP, including the older ranch-style neighborhoods near Cameron Park Drive, the hillside parcels off Green Valley Road, and the airport-adjacent streets where FAA height rules apply. Every project gets a site visit specific to your lot, not a generic template.
Almost certainly yes. Cameron Park is in El Dorado County’s designated Wildland-Urban Interface zone, so additions that cross a permit threshold trigger California Building Code Chapter 7A requirements: ember-resistant vents, ignition-resistant siding, Class A roofing, and defensible-space grading. We factor those costs into the first estimate so you don’t get surprised at plan check.
Cameron Park addition and ADU costs run slightly higher than Folsom because of the WUI materials and the El Dorado County plan-check process, but they track close to El Dorado Hills and Placerville. A room addition here runs $45,000 to $130,000, where the same flat-lot addition in Folsom might come in $5,000 to $10,000 lower because fire code and slope aren’t factors.
Every Barrett & Sons job comes with the written 90-Day Done Right Promise. If something isn’t done right, you call one number and Tom Barrett comes back to make it right. That promise is on the contract, not buried in fine print, and it applies to the framing, the finishes, and the workmanship on your Cameron Park addition or ADU. Call (877) 610-1318 for an exact quote, and ask about the 10% Senior & Veteran discount while you’re on the phone.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Cameron Park and surrounding El Dorado County communities since 1998.







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