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Dvele Home Additions & ADU: The Woodland Hills Owner’s Guide
If you own a Dvele home in Woodland Hills and need an addition or ADU built onto it, we handle that work at $45,000 to $130,000 depending on size, foundation work, and finish level. Most Woodland Hills Dvele owners call us after realizing their factory-built home has specific connection points, panel systems, and utility routing that a standard framing crew won’t understand. You need someone who knows how Dvele homes are assembled, not just someone who can pour concrete and hope for the best. We inspect the existing structure, match the addition to Dvele’s panel system, and give you a written price before any work starts.
The most common way this conversation starts: a homeowner wants more square footage, a home office, or an ADU for rental income, then discovers that adding onto a factory-built Dvele home isn’t like adding onto a stick-built house. The wall panels are prefabricated off-site, the mechanical chases run differently, and the connection details matter more than they would on a traditional frame. Get it wrong and you’ll have water intrusion at the seam, mismatched rooflines, or a structural connection that doesn’t meet California seismic code. Get it right and the addition looks like it was always part of the house.
Key Takeaways
- Dvele home additions and ADUs in Woodland Hills run $45,000 – $130,000 installed
- We match your Dvele panel system, roofline, and utility routing – not a generic bolt-on
- Written price before work starts, every time
- 365-Day Done Right Promise on the completed addition or ADU
- Call (831) 290-6866 to schedule a site walk and written estimate
Which Dvele Models This Applies To
Dvele builds homes in a few distinct series, and each one changes how an addition or ADU should be designed. The Dvele IQ series, their earlier-generation homes, used a steel-frame chassis with SIP (structural insulated panel) walls. Their newer Dvele Adaptive and Dvele Silicone Valley series homes moved to a light-gauge steel panel system with integrated mechanical chases. If your Woodland Hills Dvele is from 2020 or later, you’re likely dealing with the steel panel system. Earlier builds may have different connection details at the roofline and foundation.
Here’s what matters for matching: the exterior wall assembly. Dvele walls aren’t 2×6 stick framing. They’re engineered panels with specific thicknesses, usually 8 to 10 inches depending on the model and region. When we design an addition, we match that wall depth so interior and exterior planes align without awkward offsets. We also match the exterior cladding system, which on most Dvele homes is a rain-screen assembly over fiber cement or metal panel. A mismatch there creates a visible seam and a water management problem. We measure the existing panel thickness, identify the cladding system, and design accordingly. This isn’t the kind of thing you catch from a photo; it requires a site visit in Woodland Hills to verify.
For OEM versus aftermarket materials: Dvele doesn’t sell addition kits to third-party contractors, and they won’t ship you panels for an addition. That means we source equivalent or better materials through our specification-grade partners, and engineer the connection details ourselves. For cabinets in a Dvele addition, we’re a KraftMaid and Wellborn dealer. For countertops, we work with Cambria, Silestone, and Caesarstone. For fixtures, Kohler, Moen, Toto, and Grohe. The materials are vetted, professional-grade, and covered by manufacturer warranties. The framing and panel work is ours, engineered for California seismic requirements, and installed by our own crew.
Styles & brands we work with
Signs Your Dvele Home Addition Project Needs a Specialist
You usually don’t discover the “failure point” in a Dvele addition until you’re deep into planning. Here’s what we see most often in Woodland Hills:
- The existing panel seams show hairline cracks or water staining. Dvele panel systems settle differently than stick framing, and if the original installation had any gap at the seam, years of California sun and rain will find it. An addition that ties into a compromised seam will inherit the problem.
- Your roofline won’t match any standard truss profile. Dvele roofs are often low-slope or near-flat with specific parapet details. A generic addition with a standard 4:12 truss roof will look bolted-on and create drainage problems at the transition.
- Utility chases don’t align where you need them. Dvele routes electrical and plumbing through integrated chases in the panels. Tapping into those chases for an addition requires knowing exactly where they run, not guessing from the outside.
- The original foundation drawings are missing or incomplete. We’ve seen Woodland Hills Dvele owners with no record of rebar spacing, footing depth, or slab thickness. An addition needs that information to design the foundation tie-in correctly, especially in seismic zone 4.
- A previous contractor walked away mid-design. If you’ve already had someone tell you “it can’t be done” or “we’ll figure it out as we go,” that’s a sign they didn’t understand the system. We’ve picked up several of these projects and finished them properly.
See the difference
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AfterReplacement Cost & What’s Included
In Woodland Hills, a Dvele home addition or ADU project runs $45,000 to $130,000 installed. The range is wide because the variables are real: a single-room bump-out with a simple foundation tie-in lands at the lower end. A full ADU with kitchen, bath, separate entrance, and utility connections runs toward the top. Here’s the breakdown of what drives the price:
- Home Addition (attached): $45,000 – $130,000 depending on square footage, foundation work, roofline matching, and finish level
- ADU Construction (detached): $90,000 – $220,000 for a complete accessory dwelling unit with kitchen and bath
- Garage Conversion (if you have an existing structure): $30,000 – $80,000
Every quote from us is a written price, delivered before any work starts. That means the number you approve is the number you pay, unless you change the scope mid-project and sign a change order. We itemize labor, materials, permits, and the specific Dvele-matching work required. No verbal ballparks, no “we’ll see how it goes.” For a Dvele addition, the written price includes the structural engineering for the panel tie-in, the foundation work, the roof transition, the cladding match, and interior finishes. Every project carries our 365-Day Done Right Promise: if something isn’t right within a year of completion, we make it right at no cost to you.
DIY or Call Us?
There’s no honest DIY version of adding square footage onto a Dvele home. The structural connection between new and existing panels involves engineering, California building code compliance, and construction methods that can fail in an earthquake if done wrong. We’re talking about work that affects how your house stands up, not a weekend project. Even the “simple” parts – tying a new roof into an existing Dvele parapet, connecting to the integrated utility chases – require experience with how these homes are actually assembled.
What you can do safely: gather your original Dvele documentation if you have it, measure the rooms you want to add or convert, and note where your existing panel seams are inside and out. Then call us at (831) 290-6866. We’ll come out, measure the panels properly, check the foundation, and give you a written price for the whole job. As Isaac Pruett puts it: “Tell me what you need done. I’ll tell you what it takes and what it costs. Then we get to work.”
FAQs
Most Dvele additions in Woodland Hills take 8 to 16 weeks from permit approval to final walkthrough, depending on size, foundation conditions, and the scope of utility work. ADUs run longer, typically 4 to 6 months, because they involve separate foundations, utility connections, and full interior finishes. We give you a written schedule with your written price. Call (831) 290-6866 and we’ll give you a realistic timeline for your specific project.
No, and any contractor who says otherwise is guessing. Dvele homes are engineered as a system, and the connection between existing panels and new construction has to be designed by someone who understands the panel assembly. A mismatch creates water intrusion, structural weakness, and a visible seam that hurts resale value. We match wall depth, cladding, and roof details on every addition. For an exact assessment of your home, call (831) 290-6866.
Yes. Every Dvele addition or ADU we build in Woodland Hills is permitted through the City of Los Angeles Department of Building and Safety, with structural engineering stamped by a California-licensed engineer. We pull the permits, schedule the inspections, and don’t call the job done until it passes final. That’s part of what’s included in the written price. Call (831) 290-6866 to talk through the permit requirements for your property.
If anything in the addition or ADU we build isn’t right within 365 days of the completion date, we come back and fix it at no cost to you. That’s our 365-Day Done Right Promise, and it’s written into every contract. Foundation movement, seam leaks, roofline problems – if it’s our work and it fails, we make it right. Call (831) 290-6866 and we’ll schedule the return visit. No dispute process, no conditions.
Mason Remodeling Co Woodland Hills is an independent general contractor. We are not affiliated with Dvele, and we don’t claim to be. We’re the crew in Woodland Hills who knows how their homes go together and can build onto them properly.
When you call (831) 290-6866, a live person answers. You’ll get the name and photo of the technician or project lead before anyone shows up, and every crew member arrives in a clean marked uniform with a photo ID badge. That’s the Threshold Standard, and it applies to every visit we make in Woodland Hills.
Call (831) 290-6866 to schedule your free site walk and written estimate for a Dvele-compatible addition or ADU.
Written by Isaac Pruett, Owner, Mason Remodeling Co – Woodland Hills, CA at Mason Remodeling Co Woodland Hills, serving Woodland Hills and nearby areas.
