







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Woodside
Finding a general contractor in Woodside means finding someone who understands what building on multi-acre, rural-zoned land actually involves. It’s not a city-lot job where you pull a permit and start framing. Our crews coordinate county reviews for well and septic setbacks, work around protected oak trees, and grade open lots so winter rain doesn’t wash out a fresh building pad. If you’re planning a kitchen remodel, a detached workshop, an ADU, or a full home build, call us at (831) 480-4497 for a written price before any work starts.
We answer the phone with a live person, every time. That matters when you’re trying to lock down a contractor for a project that will run for months. And we show up with shoe covers, drop cloths, and a plan you can read in writing before the first truck rolls onto your property.
Why Elmstead Remodeling San Francisco Is Woodside’s Preferred General Contractor Company

Woodside families hire us because we treat the house like a place where people and animals live, not a construction site that happens to have a kitchen in it. Before any work begins, you get a written price, line by line. No allowances that quietly balloon. No change orders that appear after the crew arrives. The crew is background-checked and uniformed, so you know exactly who is walking through your door each morning.
Graham Stein leads our team, and his name is on the work. The 365-Day Done Right Promise is our standing offer: if something isn’t done right after we finish, we come back and make it right. Not for 30 days. For a full year. That promise is stamped on every project we complete in Woodside, from a small bathroom remodel to a full home addition.
We bring drop cloths for the floors, shoe covers at the door, and quiet tools during nap and school hours where possible. If there’s a pet-safe product choice available, we make it. And before the crew leaves, we take a photo of the clean-up so you can see the house was left right, even if you weren’t home to watch.
Styles & brands we work with







Remodeling Contractor in Woodside
A remodeling contractor in Woodside handles projects that are different from what you’d find down the Peninsula. The housing stock here runs to large custom estate homes on multi-acre lots, many built from the 1950s onward, with a real presence of adobe and timber framing. That means remodels often involve opening walls and finding structural conditions that a tract home never has. We scope for that before we quote, not after.
Kitchen remodels in Woodside typically run $14,000 to $45,000 depending on cabinet grade, countertop material, and whether walls move. Bathroom remodels run $9,000 to $28,000. We use named-brand products you can research yourself: cabinets from KraftMaid and Wellborn, countertops from Cambria and Silestone, fixtures from Kohler and Moen.
Working Around Well and Septic Lines
On a Woodside lot, the location of your well and septic tank can dictate where a remodel can and cannot go. We’ve worked on homes where a planned addition had to shift eight feet to maintain the required septic setback. That’s not a delay we discover mid-project. It’s a survey we run before quoting.
Open-Lot Grading and Access
Many Woodside homes sit on sloped or irregular terrain. Delivering materials to a building site at the top of a long driveway is not the same as dropping them on a curb in Menlo Park. We plan equipment access and material staging as part of the estimate, so the written price reflects the actual job, not a generic one.
Licensed General Contractor in Woodside

A licensed general contractor in Woodside has to manage permits that go beyond the town itself. San Mateo County reviews new structures, detached shops, and ADUs for well and septic setbacks under rural estate zoning. A project can stall for months over a site plan if the contractor doesn’t map the existing utilities early. We do that mapping before we give you a price.
Room additions in Woodside typically run $45,000 to $130,000. Garage conversions run $30,000 to $80,000. ADU construction runs $90,000 to $220,000. These numbers reflect the real cost drivers on a rural estate lot: extended utility runs, engineered drainage, and county-level review time. We’d rather tell you the real number up front than give you a low placeholder and let the price climb.
Detached Structures and Outbuildings
Woodside’s rural-residential zoning encourages barns, workshops, and accessory structures. But every new structure, even a detached shop, triggers county review for septic and well clearance. We handle that coordination in-house, and we build the timeline into your written estimate so you’re not left wondering why a “simple” building is taking months to start.
Drainage on Open Lots
The heavy winter rains in Woodside can erode a freshly cut building pad in a single storm. We grade with compacted base and plan drainage before the slab goes in. On a recent 2.5-acre lot off Manuella Road, our crew framed an 800 sq ft detached workshop with a rough-in for a future bathroom and a 200-amp subpanel. We coordinated the septic tank setback line with the county and graded the pad with 8 inches of compacted base so the slab passed inspection before the first wall went up.
Trusted Brands We Service in Woodside
We install and service products from brands whose warranties travel with the finished project. That includes window and door systems from Therma-Tru and ViewLux, and we can source ECO Window Systems and Mr-Glass for specific window packages on Woodside remodels. When a homeowner asks us to match a specific product or look, we quote it by name and price in the written estimate, not as a vague “comparable grade” line. You can research these brands yourself before you sign anything.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Woodside Homes
- County permit gaps on outbuildings. A contractor who assumes Woodside city approval is enough for a detached shop or ADU gets stopped at the county for missing well or septic clearance. That adds weeks to the schedule. We file the county review early and map utility setbacks first.
- Winter drainage failures. Without a proper grading plan, winter rains wash out freshly cut building pads on hillside lots. Erosion control stop-work orders follow. We grade and compact before the rains arrive.
- Quoting without title or oak-tree research. A “simple” woodside addition can hit an unmapped protected oak zone or a recorded easement. That forces costly design changes after the draw schedule is set. We pull the title research and check tree protection zones before quoting.
- Adobe and timber frame surprises. Older Woodside homes built with adobe or timber framing open up differently than stick-built tract homes. We plan for hidden conditions and price the remodel with them in mind, not as a discovery later.
Pricing for General Contractor in Woodside, CA
Woodside pricing reflects the reality of building on large, rural-zoned lots with county oversight, protected trees, and well and septic systems. A detached ADU runs $90,000 to $220,000. A home addition runs $45,000 to $130,000. A garage conversion runs $30,000 to $80,000. The spread is driven by lot access, utility set-backs, drainage requirements, and the condition of the existing structure. We give you a written price before any work starts, and that price is the price. Call (831) 480-4497 for a free estimate on your specific project. Estimates are free, and they come with the real numbers.
| Project Type | Price Range in Woodside |
|---|---|
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
We Also Serve Cities Near Woodside
Our crews serve Woodside and the surrounding communities, including General Contractor in Woodside, San Francisco, Redwood City, Walnut Creek, and Menlo Park. If you’re in one of these areas and planning a remodel, addition, or ADU, call us for the same written-price promise and the same 365-Day Done Right guarantee. Our General Contractor team works throughout the region with the same Cedarwell Care Promise standards.
Serving Woodside, CA - Our Local Coverage Area
We’re based in the Woodside 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 Woodside
In Woodside, yes, in most cases. San Mateo County reviews even small detached structures for well and septic setbacks under rural estate zoning. A structure under 120 sq ft may qualify for some exemptions, but the septic and well clearances still apply if it has a bathroom rough-in or water connection. Your best move is to call us at (831) 480-4497 before you pour anything. We will check the county requirements for your specific lot.
We start by mapping your well, septic tank, and leach field before we quote. In Woodside, the county requires minimum setbacks between a septic system and any new foundation, addition, or detached structure. We mark those lines, confirm they’re current with the county, and design around them. That way the written price reflects what’s actually buildable on your lot.
It can, yes. Grading that changes the slope over or near a leach field can compact the soil, redirect surface water, or damage drain lines. In Woodside, we have worked on lots where the septic field dictated where the barn pad could sit. We grade with drainage that runs away from the system, and we verify clearances with the county before any dirt moves. Call us for a site visit and we’ll tell you what’s possible.
An allowance is a placeholder dollar amount for materials that haven’t been chosen yet, like tile or fixtures. Many contractors use low allowances to keep the quote looking cheap. We don’t. We give you a written price with the actual materials named, by brand, with the real cost. If you’re comparing quotes and see a big allowance line, ask what it actually covers. Better yet, call us at (831) 480-4497 and get a price with the products written down.
Usually no, not if the ADU has plumbing. An ADU with a bathroom must meet the same septic setback requirements as the main house. In Woodside, that often means a new leach field extension or a separate tank, which changes the budget and the timeline. We will scope it before you commit. Get the real numbers first.
Written by Graham Stein, Owner at Elmstead Remodeling San Francisco, serving Woodside and the surrounding Bay Area.











