Home Addition Contractor in Huntington Beach - Design, Permits and Build Under One Contract

Fast, Reliable Home Addition Contractor Across Huntington Beach

Adding a room or a second story to a Huntington Beach home usually costs between $180 and $420 per square foot depending on whether the property sits west of Beach Boulevard inside the Coastal Zone, the condition of the 1950s – 1970s structure, and what the permit inspection uncovers once walls are open. We handle the whole thing: design coordination, Coastal Development Permits where needed, structural work, and finish – with a written price before any work starts. Call (254) 602-5618 and we’ll talk through your lot, your home, and what a realistic budget looks like.

Call (254) 602-5618

Lodgewick ADU Builders is the Home Addition Contractor team of the Kingswell family, and we’ve spent years working through the specific challenges Huntington Beach throws at homeowners: marine-layer corrosion, aging cast-iron sewer lines, undersized framing from the post-war building era, and the Coastal Commission permit layer that inland Orange County never deals with. Our crews show up in a defined arrival window, work clean, and every project carries a written guarantee – the 365-Day Done Right Promise. If the work isn’t right within a year, we come back and make it right. That commitment is in writing on every job.

Key Takeaways:

• Home additions in Huntington Beach run roughly $180 – $420 per square foot, with Coastal Zone parcels at the upper end
• Properties west of Beach Boulevard may need a Coastal Development Permit from the California Coastal Commission, which city staff cannot issue
• 1950s – 1970s ranch homes commonly hide corroded cast-iron drains, aluminum wiring, and undersized framing that a permit inspection will force you to address
• Every Lodgewick project gets a written price before work begins and a written 365-Day guarantee

Why Lodgewick ADU Builders Is Huntington Beach’s Preferred Home Addition Contractor Company

Huntington Beach homeowners call us after they’ve been burned – a quote that changed at the door, a crew that didn’t show, or an addition that leaked six months after the final check cleared. We run our work under The Kingswell Guarantee, and it’s specific: a written price before any work starts, a real arrival window, a clean job site every day, and a written guarantee on every project. No verbal promises. No “we’ll see how it goes.” Every commitment on paper.

Our reputation in Huntington Beach comes from repeat work in Downtown HB, southeast Huntington Beach near Edison High, and the tract neighborhoods east of the 405. Homeowners in these areas tell us the same thing: other contractors quoted a number, then changed it once the walls were open. That doesn’t happen here. Russ Delmar, who leads our Huntington Beach work, makes sure every project starts with a full inspection of the existing structure so surprises get priced before the contract is signed, not after. When a change is genuinely unavoidable – a rotted sill plate, an abandoned gas line – we write a change order with photos, explain it in plain English, and get your signature before we touch it.

We answer our phones with a live person, 24/7. Call (254) 602-5618 at midnight or 6 a.m. and you’ll reach a human who can talk about your project, not a voicemail tree.

Room Addition Contractor in Huntington Beach

A Room Addition Contractor in Huntington Beach does far more than bolt new square footage onto an existing home – we open up the original structure, find what the past 50 – 70 years have left behind, and bring everything to current code before closing it back up. In this city, that almost always means dealing with the original 1950s – 1970s framing, electrical, and plumbing that a permit inspection will not let you leave in place. A typical ground-floor room addition in Huntington Beach runs $220 – $380 per square foot.

What Opening the Wall Actually Reveals

In a 1960s tract home near Garfield and Edwards, we opened an exterior wall to tie in new framing and found original aluminum branch wiring that had been spliced repeatedly over decades. That single discovery changed the scope: the permit required us to replace the affected circuits with copper and add AFCI breakers before inspection would pass. We wrote the change order with photos and the homeowner approved it before we proceeded. That’s how every Lodgewick Huntington Beach project runs – inspection first, surprises priced in writing, and the move approved by you before work continues.

Coastal Zone Compliance

If your Huntington Beach lot sits west of Beach Boulevard, any room addition that expands the building footprint or alters outer walls may trigger a Coastal Development Permit from the California Coastal Commission – a separate review that city planning staff cannot issue and cannot waive. This is the single biggest hidden timeline risk for Huntington Beach additions, and it’s one inland Orange County homeowners never face. We start every consultation by checking your address against the Coastal Zone boundary map so you know the answer before you’ve spent a dollar on design.

Second Story Addition Contractor in Huntington Beach

A Second Story Addition Contractor in Huntington Beach is taking an old, single-story ranch and asking its post-war framing to carry an entirely new load. Most 1950s – 1970s Huntington Beach homes were built with 2×4 exterior walls and ceilings spaced for a one-story house, so going up nearly always requires structural engineering, shear wall upgrades, and often a foundation review. A second-story addition in Huntington Beach typically runs $280 – $420 per square foot, with beach-adjacent lots and Coastal Zone properties at the upper end.

Structural Reality of Going Up

We were called to a 1960s ranch near Downtown HB west of Beach Boulevard for a second-story addition over an existing garage. When we opened the wall, we found cast-iron drain lines that had corroded through and original framing with undersized 2×4 ceiling joists that couldn’t carry the new floor load. Before any new lumber went up, we wrote a change order with photos and had the homeowner sign off – then replaced the sewer lateral and sistered every joist to current code. That’s the Kingswell Way: say the price before the work, show up in the window given, leave the place cleaner than found, and put the guarantee in writing.

Marine Corrosion and Materials

Our Huntington Beach second-story work specs hot-dipped galvanized or stainless steel connectors and corrosion-rated flashing throughout. The persistent marine layer and salt-laden air west of the 405 will eat standard fasteners within a few years – we’ve pulled rusted framing connectors out of homes that weren’t even close enough to smell salt from the driveway. It adds roughly 8 – 15% to hardware costs, but it’s the difference between a 5-year connection and a 50-year one.

Trusted Brands We Service in Huntington Beach

We work hands-on with leading ADU and addition systems including Dvele, Cover, and Mighty Buildings – and we match each to the specific Huntington Beach lot, setback, and Coastal Zone requirements your property faces. When you’re adding a room or second floor alongside a prefab ADU from one of these manufacturers, we coordinate the foundation, utility tie-ins, and finish work so both structures read as one build. Because our crews serve Huntington Beach directly, we can keep most common materials moving without a week-long wait on distributor shipments. Call (254) 602-5618 and we’ll tell you which system fits your lot and what it costs before you commit to anything.

Common Home Addition Contractor Problems We See in Huntington Beach Homes

• Coastal Zone surprises. A homeowner gets city planning approval for an addition, then discovers mid-project that their property west of Beach Boulevard needs a separate Coastal Development Permit from the California Coastal Commission. City staff cannot issue it, and the CCC runs on its own timeline – freezing construction for months on a project the city already stamped.
• 1950s – 1970s wiring left behind. Patching over original knob-and-tube or aluminum branch wiring during an addition instead of upgrading it fails inspection when the permit is signed off, forcing expensive rework after the drywall is up. We identify and price this before the contract, not after.
• Corroded hardware from salt air. Standard galvanized fasteners and non-corrosion-rated HVAC equipment installed in beach-adjacent Huntington Beach neighborhoods rust through in a few years. We spec stainless and hot-dipped galvanized connectors at every structural connection and corrosion-rated condensers near the coast.
• Detached garage foundations that can’t carry a conversion. A cracked slab or missing footings under a 1960s detached garage turns a “simple” conversion into an engineered foundation job. We inspect the slab and run a soils report before quoting, so that cost is in the written price instead of appearing as a surprise change order.

Pricing for Home Addition Contractor in Huntington Beach, CA

We Also Serve Cities Near Huntington Beach

Our crews cover Huntington Beach plus the surrounding communities: Midway City, Westminster, Fountain Valley, and Seal Beach. If you’re in one of these nearby cities and considering a home addition, the same written-price-before-work commitment applies. We handle the Coastal Zone permits that affect Huntington Beach and Seal Beach, and the standard city permits everywhere else in Orange County.

FAQs About Home Addition Contractor in Huntington Beach