







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Stevenson Ranch
Home additions in Stevenson Ranch run $180,000 to $450,000 for most projects, and the real hurdle isn’t the framing, it’s the HOA architectural-review gate that sits in front of it. We’re a Home Addition Contractor team that files the submittal packet, sequences construction around the committee’s stamp, and puts the written price in your hands before a single shovel turns. If you’re on Hemingway Avenue or up near the golf course and need straight answers, call (661) 219-7906.

Why Benson ADU Santa Clarita Is Stevenson Ranch’s Preferred Home Addition Contractor Company

Stevenson Ranch homeowners don’t need another contractor who promises a timeline and then blames the HOA when it slips. We’ve worked through enough architectural-review cycles in this community to know the committee’s drift before we file. Our Stevenson Ranch customers consistently tell us the written price and the 365-Day Done Right Promise are what tipped them our way. That guarantee sits on every project: if the work isn’t right within a full year, we make it right.
Troy Eastman leads our team, and he’s been through more Stevenson Ranch HOA submittals than most local contractors file in a decade. Every technician who walks onto your property is background-checked and uniformed, so when the doorbell rings you know exactly who’s there. The live person answering our phone at 24/7 means the question you have at 9 p.m. about a roofline revision gets a human, not a voicemail box.
Our service to Stevenson Ranch comes from our Los Angeles coordination office, with crews working locally throughout the community. We’ve sequenced projects across the larger lots near Calgrove Boulevard, the cul-de-sacs off Poe Parkway, and the neighborhoods behind the 5 freeway. Local knowledge like that means our arrival windows aren’t guesses.
Second Story Addition Contractor in Stevenson Ranch
A second story addition in Stevenson Ranch costs $250,000 to $450,000 and takes 6 to 10 months when you add the HOA review cycle to the build calendar. We act as your Second Story Addition Contractor from the first site visit through final inspection, but the committee meeting is where these projects live or die. Many Stevenson Ranch homes sit inside HOAs that reject any addition exceeding the original roofline or altering the street-facing elevation. That single constraint reshapes the entire design conversation before we ever draw a plan.
What the HOA actually reviews
The committee cares about roof pitch, eave details, window color, and whether your new massing reads as consistent with the Spanish or Mediterranean style guide. A submittal packet that shows a modern flat roof on a tile-roof home gets bounced. We build the packet to match what the committee has already approved elsewhere in Stevenson Ranch, which cuts resubmittal risk dramatically.
Sequencing around approval instead of fighting it
The wrong move is starting foundation work before the committee stamps final approval. That’s how a Stevenson Ranch project ends up half-framed in the summer heat while a window-color change winds through review. We plan the permit path and the HOA path together, so the slab pour starts the week the stamp lands, not three weeks before it.
Garage Addition Contractors in Stevenson Ranch
Garage additions in Stevenson Ranch run $120,000 to $220,000 for a detached structure with living space above, and the rear-alley lots common in this community change the pricing math. Our Garage Addition Contractors team has trenched dedicated electrical service and new sewer laterals through the alley side of properties in the Black Oak neighborhood without cutting through a front yard. That saves hardscape repair and shortens the inspection window.
Rear-alley access and your budget
If your Stevenson Ranch lot has secondary access from the rear alley, we use it. Running new 200-amp electrical service and a sewer lateral through the alley avoids trenching through the front setback, which means your landscaping stays intact and the inspector sees a cleaner job. The utility savings alone can reach five figures on a detached garage ADU.
Materials that clear Stevenson Ranch review
A clay-tile roof and a stucco color sampled from the main house are the standard asks we see from Stevenson Ranch committees. James Hardie fiber-cement trim painted to match existing fascia gives you the durability the Santa Ana winds demand without triggering a style rejection. We specify these materials in the submittal packet from day one.

Trusted Brands We Service in Stevenson Ranch
We build with Dvele, Mighty Buildings, and Boxabl when a Stevenson Ranch homeowner wants a prefab path that’s faster to weathertight than site-built framing. These are brands you can research independently, with published specs and third-party reviews. Dvele’s panelized envelope ships with the MEP rough-ins planned at the factory, which trims on-site framing time. Mighty Buildings offers a fiber-reinforced polymer panel system that handles Stevenson Ranch’s hot, dry summers without thermal bridging issues. Boxabl’s modular boxes work well on the larger lots where a rear-alley delivery is possible. Our local crews stock the common James Hardie trim profiles and stucco-match materials for Stevenson Ranch jobs, so a revision doesn’t mean a two-week wait for product.
Common Home Addition Contractor Problems We See in Stevenson Ranch Homes
- HOA submittal packets that miss the style guide. A roof pitch or eave detail that doesn’t match the Spanish or Mediterranean standard triggers a resubmittal and a 4-to-6 week delay. We’ve seen committees reject a whole packet over a window color that wasn’t specified in the original plan set.
- Framing started before the committee stamps approval. This is the expensive one. A Stevenson Ranch addition that’s already framed when the committee asks for a window change means stopping mid-build, paying crews to wait, and redoing trim work. We never start before final approval.
- Ignoring the rear alley for utility runs. Running new electrical and sewer through the front setback instead of the rear alley means extra trenching, hardscape repair, and a longer inspection window. Stevenson Ranch’s alley access is a gift, and it gets priced into our written estimate from the first conversation.
- Stucco-color mismatches on additions. A new wing that doesn’t match the existing stucco color gets flagged on final walkthrough. We sample the main house color and submit it with the packet, so there’s no committee surprise at the end.
Pricing for Home Addition Contractor in Stevenson Ranch, CA
Here are the real numbers for this market, not placeholder ranges from a national averages chart. A single-story wing extension in Stevenson Ranch runs $180,000 to $300,000. A second story addition runs $250,000 to $450,000. A detached garage ADU with living space above runs $120,000 to $220,000, and the rear-alley access on many lots offsets utility work. A bathroom addition on the first floor runs $60,000 to $110,000. What moves the price is the HOA requirement stack: clay-tile roofing, stucco-matched exteriors, and any massing revisions the committee requests. Our written price comes before any work starts, and it does not change at the door. Call (661) 219-7906 for a free estimate with line-item detail.
| Project Type | Stevenson Ranch Price Range |
|---|---|
| Second Story Addition | $250,000 – $450,000 |
| Single-Story Wing Extension | $180,000 – $300,000 |
| Detached Garage ADU | $120,000 – $220,000 |
| Bathroom Addition | $60,000 – $110,000 |
We Also Serve Cities Near Stevenson Ranch
Our crews work across Santa Clarita, Castaic, Porter Ranch, and Chatsworth, but the HOA and architectural-review context in each city is different. Stevenson Ranch’s committee standards are stricter than what you’ll find in Santa Clarita or Valencia, which is why our submittal packet for a Stevenson Ranch project goes through a different review than one for Castaic. If you’re outside the neighborhood but nearby, call us and we’ll tell you straight what to expect.
Serving Stevenson Ranch, CA - Our Local Coverage Area
We’re based in the Stevenson Ranch 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 About Home Addition Contractor in Stevenson Ranch
Plan on 8 to 12 weeks for the HOA review cycle on top of the city permitting calendar. That’s the reality in Stevenson Ranch, and it’s why we sequence the slab pour to start the week the committee stamps final approval rather than waiting for the stamp before we even mobilize. Call (661) 219-7906 and we’ll walk you through the exact timeline for your street.
In most Stevenson Ranch HOAs, the answer is no, and the committee will reject a submittal packet that shows the new second story rising above the original roofline or altering the street-facing elevation. The workaround most homeowners choose is a rear detached ADU or a single-story wing extension that stays within the existing massing envelope. We’ll design to that constraint from the first meeting instead of getting a surprise rejection.
Clay tile roofing, stucco color-matched to the main house, and James Hardie fiber-cement trim painted to match the existing fascia are the safest spec in Stevenson Ranch. The committees follow a Spanish and Mediterranean style guide, and materials that read as modern or flat-roofed get flagged. We’ve seen a full packet rejected over a window color, so we don’t guess on materials.
Yes, and it works in your favor. Rear-alley access lets us trench dedicated electrical service and a new sewer lateral without cutting through your front yard, which saves on hardscape repair and shortens the inspection window. We recently ran a 200-amp service through the alley on a Black Oak neighborhood job and the front yard was never touched. Call (661) 219-7906 for a written price that reflects your lot’s actual access.
We file it. The homeowner shouldn’t be building the packet, compiling the material samples, or chasing the committee for a meeting date. We prepare the full submittal with roof pitch, eave details, stucco samples, and window colors, then we track it through review and sequence the build around the approval. That’s part of what our written price covers.
Call Benson ADU Santa Clarita for Your Stevenson Ranch Home Addition

You’ll get a straight answer on what your HOA will approve, what it costs, and when we can start. No verbal estimate that drifts sideways, no change orders that appear out of nowhere. The written price, the 365-Day Done Right Promise, and the submittal packet are all on the table before work starts. Call (661) 219-7906 and ask for Troy Eastman’s team. We’ll send a uniformed, background-checked crew and a price that’s already in writing.
Written by Troy Eastman, Owner at Benson ADU Santa Clarita, serving Stevenson Ranch since our first project here.



