Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Sunnyvale
Hiring a general contractor in Sunnyvale means finding a team that understands Eichler-era slab foundations, heritage oaks, and county-level permitting on the larger lots. A typical home addition in Sunnyvale runs $45,000 – $130,000, and an ADU runs $90,000 – $220,000. We work across 94085, 94086, 94087, and 94088, so whether you’re in Birdland, Cherry Chase, or off Wolfe Road, we know the streets, the setbacks, and the inspectors. Call (833) 589-8103 to talk through your project.
Why Seaside Contractors Is Sunnyvale’s Preferred General Contractor Company
We have spent enough time on Sunnyvale job sites to know which lots trigger tree-preservation reviews and which ones fall under county jurisdiction rather than city. That matters when a client is planning a rebuild on a half-acre in the 94087 corridor or a second-story addition near downtown. Glen Sorrento runs our projects with a working knowledge of Sunnyvale’s tree ordinance, lot coverage rules, and the back-and-forth that happens between the city arborist and the building department. Homeowners get a straight answer about what will hold up the permit, before we quote.
Our Sunnyvale customers tend to be engineers and product managers who read the scope line by line. They appreciate that we bring 50+ manufacturer partnerships to the table, from GAF roofing to Schluter waterproofing, so they can pick a Cambria countertop and a James Hardie siding package without bouncing between three different subcontractors. One contractor. Every trade. That model works especially well on Sunnyvale rebuilds, where a single missed coordination point between framing and finish trades becomes a six-week delay.
Styles & brands we work with
General Contractor Services in Sunnyvale
General Contractor Services in Sunnyvale cover the full arc of a residential project: demolition, structural work, rough-in, finish carpentry, and final inspection. On the acreage lots around Sunnyvale, the scope often includes septic and well coordination, grading, drainage swales, and detached structures, all of which need to be sequenced before the first load of lumber arrives. A whole-home remodel on a mid-century ranch typically runs $14,000 – $45,000 for kitchen work and $9,000 – $28,000 for a bathroom, but the larger-line items are what drive the budget for open lots: home additions at $45,000 – $130,000 and ADUs at $90,000 – $220,000.
Rebuilds and Second-Story Additions
Many Sunnyvale ranch homes were built in the 1950s and 60s on generous lots. Rebuilding or adding a second story requires structural evaluation of the existing slab and framing, plus a hard look at what the county will approve on the property. We scope the foundation work, the roof transition, and the interior stair placement before we quote.
Detached ADUs and Outbuildings
A detached ADU on a Sunnyvale lot often triggers well and septic setback reviews if the property is outside the city sewer district. We coordinate with the county on minimum distances between the unit, the leach field, and the wellhead, then adjust the building envelope accordingly. Working with prefab manufacturers like Abodu and Dvele, we can often reduce site-built framing time by several weeks.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Construction Company in Sunnyvale
A Construction Company working in Sunnyvale has to handle both the city’s redevelopment standards and the county’s rural permitting on the same calendar. That split is the defining feature of this market. A garage conversion in the 94085 corridor may fall under city review, while a detached shop on a one-acre parcel near the Stevens Creek corridor goes through county channels. Garage conversions run $30,000 – $80,000, and the county side can add four to six weeks of review time that a city-only contractor would not anticipate.
Demolition and Site Prep
Before a shovel touches the ground on a Sunnyvale rebuild, we confirm the tree survey, the arborist report, and the replacement plan required by the city’s tree ordinance. Protected heritage oaks and redwoods routinely change the foundation location and the grading plan. We sequence demolition around the root zones and the protected drip lines.
Foundation and Rough-In on Open Lots
On open acreage, we schedule the foundation pour around the county’s inspection windows and coordinate the slab plumbing with the existing septic lateral. Long material hauls from the nearest supply yard in San Jose or Mountain View mean we batch deliveries and stage equipment carefully. Our crews know which access points on a rural Sunnyvale lot will take a concrete truck and which ones will not.
Trusted Brands We Service in Sunnyvale
We stock and service the brands our Sunnyvale customers ask for most. For bathroom rough-in and waterproofing, we specify Schluter systems behind the tile, because a mid-century slab-on-grade remodel has no room for moisture mistakes. Faucets and valves come from Delta, American Standard, and Toto, matched to the plumbing style of the house. Glen Sorrento has built our parts list around what actually holds up in Sunnyvale’s dry summers and wet Novembers: fixtures that do not corrode in hard water, sealants that flex with slab movement, and shower pans that do not leak when the ground shifts. We keep fast-turnaround access to these products without marking up the line items.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Sunnyvale Homes
- County permitting timelines on acreage. Homeowners tear down the old ranch, then discover the septic and well setbacks require a county review that adds months to the schedule. We pull the county file and walk the property before the first demolition permit is filed.
- Tree ordinance stop-work orders. The city’s replacement plan requirement catches rebuilds mid-excavation when no arborist report was submitted. On any sunnyvale project with a tree within 30 feet of the proposed foundation, the arborist report is a critical path item, not an afterthought.
- Long material hauls and tight access. Rural Sunnyvale lots off narrow private roads do not fit a standard delivery truck. We plan the crane picks, the concrete pump, and the framing drops around the driveway width and the septic field location.
- Grading and drainage failures on open lots. The flat, low-pitch terrain across Sunnyvale does not shed water quickly. Without proper swales and slope correction, the slab collects water all winter. We grade the pad and the surrounding area before the forms go up.
Pricing for General Contractor in Sunnyvale, CA
Sunnyvale pricing tracks the cost of land, the cost of county and city permits, and the higher spec that buyers expect in this market. The table below covers the three biggest line items we quote here. What moves the number is site access, the tree survey, the septic and well distances, and the finish level you choose. A Cambria countertop adds to the kitchen budget; a Quikrete patio paver package keeps the outdoor hardscape leaner. We give you a written line-item quote before work starts, and our pricing does not change once the contract is signed unless you change the scope.
| Project | Sunnyvale Price Range |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
Call (833) 589-8103 for a free estimate on your specific property. We will walk the lot, check the tree survey and the county file, and give you a number you can plan around.
We Also Serve Cities Near Sunnyvale
Our crews work throughout the South Bay and up the Peninsula. In addition to Sunnyvale, we serve Mountain View, Santa Clara, Loyola, and Cupertino. Every General Contractor project we take on gets the same scoping discipline, whether it is a tight-lot infill home or a half-acre rebuild.
Serving Sunnyvale, CA — Our Local Coverage Area
We’re based in the Sunnyvale 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 General Contractor in Sunnyvale
County permitting in the unincorporated pockets around Sunnyvale adds a septic and well review that city permits do not require. The county checks minimum distances between the building, the leach field, and the wellhead, and that review alone can add four to eight weeks. We pull the county file first, then write the scope around those constraints. Call (833) 589-8103 and we will check your parcel before you start planning.
Expect the county to enforce a minimum setback distance, typically 100 feet between the well and the new leach field or septic tank, though the exact number depends on your parcel size and soil percolation. The setback can shrink the buildable envelope enough to change where the ADU sits. We handle the percolation test, the Health Department sign-off, and the revised site plan. Call (833) 589-8103 for an exact read on your property.
Yes. We bring in a licensed arborist to write the report the city requires, then we submit the removal permit and the replacement plan through the city’s tree-preservation review. On a Birdland rebuild, we protected a heritage oak by shifting the foundation and sequencing the rough-in around the root zone, and the project passed without a single change order tied to tree protection. Call (833) 589-8103 to get the tree survey started.
We batch our deliveries and stage materials in a way that does not tear up your driveway or the neighbor’s fence line. For a half-acre lot with a narrow access road, we send a site walk crew out first to mark the concrete truck route and the crane pad. We quote the haul fees and equipment access line items up front. Call (833) 589-8103 and we will scope the access before we quote.
We file the grading plan with the approving jurisdiction, whether that is the city or the county, and we include the drainage swales, slope corrections, and any required retaining walls in the permit set. In Sunnyvale’s flat terrain, modest regrading makes a big difference in keeping water away from the slab. Our crews cut the swales, set the grade, and get the drainage sign-off before the framing starts. Call (833) 589-8103 for a free grading consult on your lot.
Written by Glen Sorrento, Owner at Seaside Contractors, serving Sunnyvale and the greater South Bay.