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CGI Home Additions & ADU: The Fresno Owner’s Guide
A full CGI home addition or ADU in Fresno runs $45,000 to $130,000, depending on square footage, site prep, and whether you’re adding a living space or a detached unit with its own kitchen and bath. Most owners don’t come to us because the whole project failed at once. They come to us because a specific piece of it went wrong: a wall that’s no longer square, a door that binds in summer, a rough-in that won’t pass inspection, or a foundation tie-in that’s starting to separate from the original slab. We fix the failed part, then level the rest of the scope so you’re not chasing the same problem in six months.
We’re Bradford Remodeling Co Fresno, an independent contractor, not affiliated with CGI. We work with CGI-framed additions and ADUs across Fresno, and we stock the common hardware, fasteners, and tie-down components these projects need on the truck.
Key Takeaways
- CGI home addition or ADU work in Fresno runs $45,000 to $130,000 installed, pulled from the line-item estimate we give you up front.
- The most common failure points are foundation tie-ins, shear wall connections, and rough-in work that was never square to begin with.
- Every job gets a written price before start, and the finished work is covered for a full year under our 365-Day Done Right Promise.
- Curtis Lane and his crew have worked projects from Tower District bungalows to build-outs along Shaw Avenue, and they know what Fresno soil and summer heat do to a framed addition.
Styles & brands we work with
Which CGI Models This Applies To
CGI manufactures panelized and pre-engineered building systems used in residential additions, accessory dwelling units, and some light-commercial build-outs. When you’re matching parts, what matters is the panel series and the structural spec your original permit was drawn against. The label is usually stamped on the top plate or the face of a corner panel. If the label is painted over or gone, we measure the panel thickness, stud spacing, and the gauge of the tie-down strap. That almost always narrows it to the right series.
The OEM-versus-aftermarket decision for CGI work comes down to one question: is the failed part carrying load, or just enclosing space? Shear panels, hold-downs, and anything the engineer called out on the structural sheet should be OEM or an engineer-approved equivalent. Trim, flashing, and non-structural blocking can go aftermarket without a second thought. We’ll tell you which is which before we order a single part. A compatibility gotcha we see in Fresno: CGI’s older panel systems used a specific hold-down bolt spacing that doesn’t match off-the-shelf Simpson hardware. Trying to save $40 on the wrong anchor is how a small repair becomes a re-inspection and a second permit fee.
Signs Your CGI Home Additions & ADU Is Failing
- Doors and windows bind seasonally. Fresno’s clay soil expands and contracts with moisture, and a poorly tied addition will move with it. If a door that closed fine in February won’t latch in August, the framing has lost its original alignment. The fix is usually at the foundation connection, not the door jamb.
- Drywall cracks at inside corners and above door headers. This is the classic symptom of a wall that’s racking because a shear connection was skipped or undersized. The crack is the visible evidence; the problem is the wall’s resistance to lateral load.
- A visible gap where the addition wall meets the original house. That joint is supposed to stay closed with proper tie-in hardware. When it opens up, it means the two structures are moving independently, and water and air are getting through. It won’t reseal itself.
- Springy floors. If the subfloor over a new addition’s crawlspace bounces more than it did a year ago, a support member or the original joist span is undersized. This one gets worse slowly, then all at once when the span gives.
- Water staining at wall-to-roof intersections. A failing flashing detail is the most common cause, but on CGI additions we also see panel joints that were never properly taped at the water-resistive barrier. Staining means the wall cavity has already been getting wet.
See the difference
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AfterReplacement Cost & What’s Included
Here’s the straight line-item picture for CGI-compatible addition and ADU work in Fresno. The range is wide because the scope is wide: a single-room bump-out sits at one end, and a detached ADU with its own rough plumbing and electrical at the other.
| Scope | Typical Fresno Range |
|---|---|
| Single-room addition (200-400 sq ft) | $45,000 – $85,000 |
| Larger addition (400-800 sq ft) | $70,000 – $130,000 |
| Detached ADU (full kitchen/bath) | $90,000 – $220,000 |
| Garage conversion | $30,000 – $80,000 |
What drives the number in Fresno is the same every time: foundation type (slab versus raised), site access, and what the engineer requires for shear and tie-down on a house built in this seismic zone. Each estimate lists parts and labor separately, every time, with no number that moves at the door. And because the work comes with the 365-Day Done Right Promise, if anything we built fails inside that year, we return and correct it at no charge. In writing.
DIY or Call Us?
You can read a corner label, take a few measurements, and check for the visible cracks and gaps we listed above. That tells you something’s wrong and gives us a head start on the diagnostic. What you shouldn’t do is cut into a sheathing panel, relocate a hold-down, or try to pull a wall back into square with a come-along. A CGI addition is an engineered system, and yanking one connection without resolving the load path is how you turn a $600 repair into a $20,000 structural do-over. If the wall’s out of square, the fix starts with understanding why it moved, not just forcing it back.
Call (559) 785-2712 and we’ll put a real person on the line to walk through what you’re seeing. Then we’ll schedule a site visit with a written estimate. The estimate says what we build, and we build what the estimate says.
FAQs
A properly tied and flashed CGI addition will hold for 30 years or more in the Fresno climate, provided the foundation connection and water-resistive barrier were done right. What shortens that timeline is Fresno summer sun degrading exposed flashing over time and clay soil movement stressing the tie-ins. Annual visual checks at the roof-to-wall joints and the house-to-addition seam will catch most problems before they start. If you spot something, call (559) 785-2712 and we’ll take a look before you spend money on guesses.
Most of what we see can be repaired. A separated tie-in can be re-anchored, bad flashing can be pulled and replaced, and a springy floor can be sistered or supported. Replacement of the whole addition becomes the answer only when the structural framing itself is compromised by rot, termite damage, or a foundation that’s moved beyond tolerance. We’ll tell you which one you have in the first visit, and the written estimate follows that diagnosis exactly. Estimates are free, so call (559) 785-2712 and get the straight answer on paper.
A flashing replacement or single tie-in repair usually takes one to two working days. A foundation connection problem or a shear wall rebuild can run a week, sometimes two if the engineer’s detail requires an inspection mid-way. Permits, when required, add to the timeline, and we pull them ourselves, so there’s no confusion about who’s responsible. Call (559) 785-2712 with your scope and we’ll give you a schedule range along with the price.
We stock the common hardware, fasteners, flashing, and tie-down components in our Fresno trucks so most repair starts don’t wait on a delivery. Specialty structural panels and engineer-specified hold-downs are ordered as needed, with lead time and freight spelled out on the estimate before you commit. When there’s an aftermarket equivalent that performs just as well for less, we’ll show you the spec sheet and let you make the call. We also work with parts for KraftMaid, Cambria, and Silestone when your addition includes cabinet or surface work.
Call (559) 785-2712 for a free estimate. We’ll answer the phone, schedule the visit, and hand you a written price before any work starts. That’s how The Garrison Standard works, and that’s how we’ve run every CGI addition and ADU job in Fresno.
Written by Curtis Lane, Owner, Bradford Remodeling Co Fresno at Bradford Remodeling Co Fresno, serving Fresno and nearby areas.
