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 Home Remodeling Across Sunnyvale
Home remodeling in Sunnyvale generally costs between $9,000 for a small bathroom and $220,000 for a full ADU build, with most whole-home projects landing in the $45,000 to $130,000 range. The wildcard here isn’t labor rates, it’s the parcel. Sunnyvale’s older ranch lots in 94086 and 94087 often run deep, and when your remodel touches an outbuilding, detached ADU, or shop behind the main house, the project can shift from city permitting to Santa Clara County review for septic and well setbacks. We scope that before we quote, because nobody wants a draw schedule held up by a missed county requirement. Call (877) 752-3868 and we’ll walk your lot with you.

Why Ashford Contractors Is Sunnyvale’s Preferred Home Remodeling Company
We’re a full-scope general contractor, not a single-trade specialist. That means one project manager, one contract, and one point of accountability for a remodel that touches plumbing, framing, roofing, hardscape, and everything between. Sunnyvale homeowners doing mid-to-large renovations regularly tell us the coordination burden of juggling separate subs was what stalled their project in the first place. Our Home Remodeling team handles the interior and exterior scopes in-house, from KraftMaid cabinetry and Cambria countertops inside to Belgard pavers and GAF roofing outside.
Glen Mossier runs our operation, and he’s the one who walks Sunnyvale job sites before we scope anything. That matters on acreage parcels where grading, utility separation, and access routing determine whether a bid holds. We don’t quote over the phone for back-lot builds. We stand on the ground, check the slope, confirm which jurisdiction reviews the work, then write the number.
Sunnyvale’s building department is rigorous, and Title 24 energy requirements apply to nearly every project here. We pull permits, we schedule inspections, and we keep the paperwork moving so your remodel doesn’t stall at a plan check desk. Our customers don’t have to learn municipal code. That’s our job.
Styles & brands we work with







Full Home Remodel in Sunnyvale
A Full Home Remodel in Sunnyvale typically runs $45,000 to $130,000 depending on square footage, structural scope, and how much of the original 1950s-60s framing and mechanicals you’re keeping. On the post-war ranch tracts that dominate 94086 and 94087, a full remodel almost always includes seismic bolting or shear-wall work, a panel upgrade, new plumbing to replace galvanized, and a Title 24 energy compliance package. Those aren’t options, they’re code. We price them into the base bid from day one.
Structural Scope on Ranch-Era Homes
Sunnyvale’s core housing stock sits on slab-on-grade foundations with shallow roof pitches. When we gut a 1950s rancher, we’re usually adding anchor bolts, bracing cripple walls, and reframing load paths before finish work starts. This is the part you never see but the part inspectors care about most.
Finishes and Material Selection
Once the structure is sound, we move into cabinetry, countertops, flooring, and fixtures. We work with Kohler, Grohe, and Moen on the plumbing side, and KraftMaid or Wellborn for cabinets. You choose the material tier that fits your budget, and we spec it into the written scope with exact allowances.
Home Remodeling Contractor in Sunnyvale
A Home Remodeling Contractor in Sunnyvale should be fluent in the two extremes of this market: seismic retrofits and small remodels on original ranch homes, and Title 24-heavy additions or ADUs on lots that are being redeveloped. We operate across both. A typical kitchen remodel here runs $14,000 to $45,000, a bathroom $9,000 to $28,000, and a garage conversion $30,000 to $80,000. But Sunnyvale acreage parcels shift the math, because the moment your project includes a detached structure, county review enters the picture.
Parcel-Level Scoping
Before we quote a back-lot ADU, shop, or outbuilding, we confirm which jurisdiction governs the work. City permit or county review changes the timeline, the engineering, and the price. We don’t guess. We confirm, then we build the scope.
Single Point of Accountability
One contract covers the interior gut, the exterior work, and everything between. If your Sunnyvale remodel touches the main house and a detached garage, we’d rather manage both than hand you to a separate contractor for the outbuilding. That’s the whole point of full-scope general contracting.

Trusted Brands We Service in Sunnyvale
We source from a curated roster of 50+ manufacturers, and for fencing and perimeter work on Sunnyvale lots we work with Master Halco, Ameristar, and Bufftech. Whether it’s a vinyl fence along a 94085 property line or an aluminum fence ringing a back-lot ADU, we stock common components locally and can turn material around fast. Homeowners here shouldn’t have to drive to San Jose for a gate panel or a post cap. We keep the parts moving.
See the difference
Before
After
Before
After
Before
AfterCommon Home Remodeling Problems We See in Sunnyvale Homes
- County versus city permitting confusion. A detached ADU or shop behind a main house on a Sunnyvale acreage parcel often triggers Santa Clara County review for septic and well setbacks. Quoting it as a city permit delays the draw schedule and blows the timeline. We confirm jurisdiction before we write the number.
- Grading and drainage failures. Sunnyvale’s wet season runs late fall through spring, and a flat or poorly sloped back lot will send runoff pooling against new slabs or under a detached shop. We grade the whole parcel, not just the structure footprint.
- Original single-pane glazing and galvanized plumbing. The post-war homes in 94086 and 94087 almost always need full window replacement (typically $4,500 to $15,000) and repiping. Skipping these to save on bid price just pushes the cost into year two.
- Long material hauls to back-lot builds. A deep Sunnyvale lot makes equipment staging and material access a real line item. If it’s not in the written scope, it turns into a change order once rough-in is underway. We scope access routing ahead of time.
Pricing for Home Remodeling in Sunnyvale, CA
These are the ranges we quote for Sunnyvale work. They reflect local permit costs, Title 24 compliance, seismic retrofit requirements, and the material haul and access realities of this market.
| Scope | Typical Range |
|---|---|
| Full Home Remodel | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
On acreage parcels, grading and drainage work is priced per lot condition after we walk the site. Written line-item quotes mean the number you see is the number you build to. Call (877) 752-3868 for a free estimate on your specific Sunnyvale property.
We Also Serve Cities Near Sunnyvale
Our crews work throughout the South Bay, including Home Remodeling in Sunnyvale, Mountain View, Santa Clara, Loyola, and Cupertino. If your project sits on a Sunnyvale acreage lot or a Mountain View rancher, the scoping approach is the same: walk the parcel, confirm jurisdiction, write the honest number.
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 Home Remodeling in Sunnyvale
It depends on the parcel. Remodels that stay within the main house footprint typically go through the City of Sunnyvale. But when your project adds or substantially rebuilds a detached structure, an ADU, or a shop behind the main house, Santa Clara County often reviews the septic and well setbacks, and the grading plan runs through county eyes as well. We confirm which jurisdiction applies before quoting, because guessing wrong stalls the draw schedule. Call (877) 752-3868 and we’ll check your parcel.
It adds a real line item for equipment staging, material delivery routing, and sometimes temporary access protection. A deep lot off Fair Oaks in 94086 is a different access problem than a shallow 94085 parcel. We scope the access route before we write the number so it doesn’t become a change order mid-rough-in.
Yes, and on many older Sunnyvale tracts it’s now the standard move. The original single-story ranchers on oversized lots leave room. But a detached ADU or shop triggers septic and well setback reviews, and the inspectors scrutinize seismic and Title 24 calcs as closely as the framing. ADU construction here runs $90,000 to $220,000. We handle the full scope: structure, utilities, grading, and finish. Call (877) 752-3868 for a site walk.
We re-grade the entire parcel so runoff sheets away from new slabs and foundation lines. Sunnyvale’s wet season runs late fall through early spring, and a flat back lot will pool water against a new detached shop in the first heavy rain. We schedule dry-in ahead of the rain where we can, and we build drainage into the base scope, not as an afterthought.
A written scope with load-bearing changes, utility separation, access routing, and grading locked in before framing starts. Most disputes come from undocumented changes in the field. On a Sunnyvale ranch lot, we carry that level of detail through the whole job and hold the dry-in ahead of the rainy season so the punch list closes clean. Estimates are free, call (877) 752-3868.
Written by Glen Mossier, Owner at Ashford Contractors, serving Sunnyvale from Foster City.