Home Remodeling Contractor in Santa Rosa Valley

Santa Rosa Valley is unincorporated Ventura County, so the County Resource Management Agency, Building and Safety Division issues building permits. RnD Builders also prepares the plans and submittals and manages corrections and inspections.

They can. An addition, ADU or new bathroom can also change the load on an onsite wastewater treatment system, and the County’s Environmental Health Division reviews the design. We also coordinate the septic design with your building plans.

We plan around them. The County offers a Water Well Permit, and we confirm how your project affects the water supply before design. We also coordinate with the right County reviewers.

Yes. Our Santa Rosa Valley home addition is linked on this page, a 350 square foot addition with cedar ceilings and siding, hardwood floors and a walk-in closet. We can also arrange references during your estimate.

Often, because many lots are larger than average. Feasibility depends on setbacks, septic capacity and County review, so we confirm those first and then handle design, permits and construction as one project.

We serve Santa Rosa Valley and the nearby communities of Hidden Valley, Camarillo, Thousand Oaks, Newbury Park and Moorpark. Ventura County is our main focus. Ask us if you are not sure we cover your address.

Santa Rosa Valley homeowners usually ask about three numbers first: kitchens at $35,000 to $150,000, bathrooms at $25,000 to $85,000 and interior remodels at $75,000 to $250,000. Beyond those, garage conversions run $140,000 to $200,000, detached ADUs $220,000 to $350,000, additions start at $450 per square foot and custom homes at $650. Site conditions can also change a project. Your estimate itemizes every cost element, and larger or more complex projects can also run higher.

Timelines follow the work. A kitchen is guaranteed within 28 days, a bathroom takes about 3 weeks and a basic garage conversion 3 to 6 weeks, while a detached ADU takes up to 3 months from the first day of construction and a whole-home remodel 4 to 6 months. We set realistic timelines at the start.

Kitchens generally run $35,000 to $150,000, depending on size, layout changes, cabinetry and finishes, and a kitchen is guaranteed within 28 days. Larger kitchens and premium materials can also run higher, and we confirm the exact price in a written estimate after we see your space.

Yes. Room additions, kitchen remodeling and whole-home renovations are all part of our work in Santa Rosa Valley, and additions start at $450 per square foot. We design the changes in 3D first so you can adjust them before construction.

New detached ADUs generally run $220,000 to $350,000, and garage conversions $140,000 to $200,000, depending on size, site conditions and finishes. Rents and returns vary, so we scope the design and costs with you and do not promise a specific payback. Your written estimate confirms the exact price.

Yes. Whether you have a vacant lot or want to demolish and rebuild, we guide you through site evaluation, architectural design, structural engineering, permits and construction. Custom homes start at $650 per square foot and generally take 11 to 20 months.

We price from what we can see and verify on the first visit, and we list it line by line. On older homes we check framing, plumbing and electrical before pricing. Any change is agreed in writing before work on it begins, so the project stays in line with the budget agreed in your contract.

One team handles design, permits and construction, so plans are drawn with the build in mind. RnD Builders gives Santa Rosa Valley homeowners 3D renderings, itemized written proposals and a single point of contact. Our office is in Woodland Hills. Whoever you hire, confirm the license, the written contract and the permits. You can check us on the CSLB website: RnD Builders is a licensed California general contractor, License #1081122. State law requires a license for projects that need a permit or total $1,000 or more, so ask every contractor for a number.