Dvele Home Addition Contractor in Fresno: What to Know First
Dvele home additions in Fresno typically run $180 – $340 per square foot for design, permitting, and construction, with most full room additions landing between $120,000 and $280,000 depending on scope. We’re an independent Dvele service provider, meaning we work on your existing Dvele-built home without being tied to the manufacturer’s schedule or pricing. If you own a Dvele home in Fresno and need a room addition, second story, or garage bump-out, call (559) 354-0579 and we’ll put a written price in front of you before any work starts.
This page is for Dvele homeowners in Fresno who want to expand without guessing. We’ll walk through what Dvele construction actually involves when you’re adding onto it, what goes wrong, what it costs, and how our process works. No fluff, no price changes at the door.
How Dvele Products Fail – and How We Fix Them
Dvele builds high-performance prefab homes, and in Fresno’s climate that creates a specific set of expansion challenges. Here’s what we see on Dvele additions and remodels in the Central Valley, and how we handle each one:
- Panel joint separation at the addition tie-in. Dvele homes ship as factory-built modules, and the seams where modules meet are engineered tight. When you add a stick-built or panelized addition in Fresno, the new structure settles differently than the factory module, especially through our hot, dry summers. We’ve seen gaps open at the roofline within the first year. Our fix: we install a flexible transition detail between the existing Dvele module and the new addition, using a slip joint that lets the two structures move independently instead of fighting each other.
- Mismatched wall assembly causing condensation. Dvele wall panels are built with continuous insulation and a vapor profile tuned for their mechanical system. A standard Fresno room addition built with conventional 2×6 framing and batt insulation creates a different dew point, which can lead to moisture collecting at the transition wall. We spec the addition’s wall assembly to match the Dvele panel’s thermal performance, so you don’t end up with a damp corner you discover two winters later.
- HVAC zoning that can’t keep up. Dvele homes run tight and their mechanical systems are sized for the original square footage. Add a 400-square-foot primary suite and the existing system often can’t push enough air to the new space, especially in Fresno’s 105-degree August afternoons. We calculate the added load before framing starts and either upsize the system or add a ductless mini-split to the addition, so your new room doesn’t become the hot box nobody uses.
- Roof plane interruption causing leaks at the valley. Dvele rooflines are clean and low-slope in many models. A bump-out or second-story addition changes the drainage pattern, and a poorly flashed valley where new roof meets factory roof is the most common leak source we repair on Dvele additions done by other contractors. We use a standing-seam metal valley with ice-and-water shield underneath, which holds up through Fresno’s winter downpours.
- Foundation tie-in that transfers cracks. Dvele’s foundation system is engineered as a unit. A new addition with a separate footing that isn’t properly keyed and reinforced will move independently during our clay-soil expansion cycles. In neighborhoods like Tower District or Fig Garden, where soil shifts seasonally, we’ve seen this crack new drywall within months. We dowel the new foundation into the existing slab and use a full-depth expansion joint at the connection.
Our Dvele Home Addition Contractor Process
Here’s exactly what happens when you call us about a Dvele home addition in Fresno:
- 1
Site visit and measurements. We walk your property, measure the existing Dvele structure, and talk through what you actually need the space to do. Russ Delmar likes to say: “Tell me what you need the space to do, and we’ll figure out the rest from there.” This takes about 90 minutes and it’s free.
- 2
Written scope and price. Within a week, you get a line-item estimate that shows materials, labor, permits, and our markup. This is the number you pay. If something changes on our end, we eat it. If you change the scope, we reprice in writing before proceeding.
- 3
Engineering and permits. We pull permits through the City of Fresno and work with a structural engineer who understands prefab home systems. The Dvele tie-in details get stamped, which means the inspector sees exactly what we’re doing and why.
- 4
Construction. Our crew shows up at the time we told you, uniformed and background-checked. We protect the existing Dvele finishes with floor protection and dust barriers, and we keep the job site cleaned daily. The addition ties in with the transition details we described above.
- 5
Inspection and sign-off. When the work passes inspection, we walk you through every detail, hand you the written 365-Day Done Right Promise, and make sure you know how to reach us if anything feels off.
- 6
The follow-up. If anything fails within 365 days, we come back and fix it. Free. That’s the guarantee, in writing, on every Dvele project we do in Fresno.
What Dvele Home Addition Contractor Costs in Fresno

Here are real numbers for the Dvele additions we price most often in Fresno:
| Project Type | Typical Cost Range in Fresno | What Moves the Price |
|---|---|---|
| Bump-out (80 – 120 sq ft) | $28,000 – $55,000 | Foundation work, existing wall demolition, Dvele tie-in complexity |
| Single room addition (200 – 400 sq ft) | $55,000 – $130,000 | Bathroom or kitchen included, finish level, HVAC integration |
| Primary suite addition (400 – 600 sq ft) | $110,000 – $210,000 | Bathroom fixtures, closet build-out, window sizing |
| Second story addition (600 – 900 sq ft) | $180,000 – $350,000 | Roof reinforcement, stair placement, structural tie-in to Dvele module |
| Sunroom on existing slab | $35,000 – $85,000 | Glazing specs, foundation condition, electrical and climate control |
Dvele-specific factors that push costs higher than standard Fresno additions: the thermal and vapor matching we described, the flexible transition details, and the engineering time for the tie-in. You’ll never get a surprise change order from us. Call (559) 354-0579 and we’ll give you a written quote specific to your Dvele home.
Why Fresno Homeowners Call Lodgewick ADU Fresno for Dvele Work
Adding onto a Dvele home isn’t the same as adding onto a 1940s bungalow off Blackstone. The factory-built panel system rewards contractors who understand how those modules move, breathe, and settle, and it punishes the ones who treat it like any other framing job. We’ve spent enough time inside Dvele construction to know the difference.
Every job runs under The Kingswell Guarantee: a written price before work begins, a real arrival window, a clean job site, and a written guarantee on the finished project. If the work fails within 365 days, we come back and fix it. No arguing, no invoice. A live person answers our phone 24/7, so when you call with a question about your Dvele addition at 9 p.m., you get a person, not a voicemail loop.
We also work with Abodu and Cover homes in the Fresno area, so if your neighbor asks who handled your Dvele addition, we can help with their prefab build too. The Kingswell Way means the same thing on every job: say the price before the work, show up in the window given, leave the place cleaner than found, and put the guarantee in writing.
FAQs

We’re an independent Dvele service provider, not an authorized Dvele warranty agent, so we don’t process manufacturer warranty claims on Dvele’s behalf. What we do is fix the problem correctly, using materials and methods that won’t void your remaining Dvele coverage. For anything under active manufacturer warranty, we recommend contacting Dvele directly first, then call us at (559) 354-0579 if you want a second opinion or a faster path to getting the work done.
Most Dvele additions in Fresno take 12 to 20 weeks from first site visit to final inspection, depending on scope and how quickly permits clear through the City of Fresno. A simple bump-out on an existing slab can finish in under three months. A second-story addition usually runs four to six months. We’ll give you a written timeline with the estimate, and we show up when we say we will.
Yes, and this matters more than most homeowners realize. Dvele’s finish packages are specific, from the siding profiles to the millwork and flooring. We source matching materials directly from Dvele’s suppliers where possible, and when an exact OEM finish isn’t available, we tell you before we install an alternative. You’ll see samples and get a written sign-off on finishes before construction starts.
Done wrong, absolutely. A conventional addition tied to a Dvele home can create air leaks and condensation at the connection point, which undermines the whole point of owning a high-performance prefab. Done right, the addition maintains the home’s thermal envelope and may even improve it. We build the addition to match Dvele’s insulation values and air barrier continuity, and we test the tie-in before drywall goes up.
Yes, we pull every required permit through the City of Fresno, including structural, electrical, and mechanical permits for the addition. Our engineer stamps the Dvele tie-in details so the inspector understands exactly how the new structure integrates with the factory-built modules. You’ll get copies of all permits and inspection sign-offs with your project file. Call (559) 354-0579 for an exact quote on your Dvele addition, and we’ll walk you through the permit path specific to your property.
Written by Russ Delmar, Owner, Lodgewick ADU Fresno at Lodgewick ADU Fresno, serving Fresno and nearby areas.


