Custom Homes in Ventura County & Los Angeles

Custom homes with RnD Builders start at $650 per square foot and up, depending on size, site conditions, design complexity, materials and finish level. Land, design and permits, site preparation and foundation, construction, interior finishes and landscaping all add up, so we price every home individually. We also provide a detailed, itemized written estimate once your plans are defined.

On average, a custom home project can also take between 11 and 20 months, depending on the scope and the specifics of the design. During the initial planning stage we provide a timeline broken into stages, and we guarantee that we work within that time frame.

Yes. Nearly all jurisdictions require building permits for a new custom home to confirm compliance with building codes, safety standards and energy regulations. A new home typically needs separate permits for grading, foundation, electrical, plumbing and the overall structure. RnD Builders also handles the entire permit process and drafts plans designed for smooth approvals.

The process starts with design and planning with 3D modeling, then material selection, a construction timeline with permits and approvals, the build itself and finally the handover, when the home is ready, the documents are signed and the keys are in your hands. A dedicated project manager keeps you informed at every stage.

It depends on the condition of the home, your lot and your goals. A remodel or addition can be the better value when the structure is sound, while a ground-up build gives you full control over layout, systems and energy performance. We also walk the property with you and give you honest options for both.

Overall, interior finishes and fittings tend to cost the most when everything is added up. Framing, the foundation (especially in California, where seismic standards are strict), roofing, kitchens and bathrooms, and the mechanical systems for heating, cooling, electrical and plumbing are also major costs. With smart planning we help you allocate your budget where it matters.

The foundation, roofing, insulation, windows and doors, plumbing and electrical, and waterproofing and drainage. Cutting corners in these areas can cost far more in repairs later. The builder you choose also matters, so work with a licensed, experienced contractor.

You remain involved in the process and can adjust design elements as we move along. Your project manager explains how any change affects the scope, timeline and cost, and we agree on changes in writing before we add them to your contract.

Yes. In addition, many custom homes include a pool and spa, an outdoor living area, a guest lounge or a separate ADU. We design these as part of the overall plan so the structure, utilities and landscape work together. Our Woodland Hills custom home includes a pool with spa, a guest lounge with a kitchen and a game room.

Yes. Our in-house design team works with you from the first idea, using 3D modeling so you can see the home in detail before construction, and our build team executes the plan. Having design and build under one roof helps avoid delays and miscommunication between separate firms.

Yes. New homes in California must meet the state energy code, which includes efficient building envelope and systems requirements and, for most new low-rise homes, rooftop solar. We build these requirements into your plans from the start so approvals go smoothly.

Yes. California requires a contractor license for any project that needs a building permit or totals $1,000 or more in labor and materials, and a new home needs permits. RnD Builders is a licensed general contractor, and you can verify any license on the CSLB website before you hire.

Your written estimate lists the scope and every selection, and we review site conditions that can change the job, such as soil, grading and utility distance. If something changes, you approve it in writing before we add it to the contract. Our promise is a project completed in line with the budget agreed in your contract.

Ventura County is our main focus, such as Thousand Oaks, Newbury Park, Camarillo, Santa Rosa Valley, Oxnard, Ventura, Simi Valley and Moorpark. We also build custom homes across Los Angeles County, including Westlake Village, Calabasas, Agoura Hills, Malibu, Woodland Hills, West Hills, Chatsworth, Northridge, Porter Ranch, Santa Clarita, Valencia, Pacific Palisades, Pasadena, Altadena and the South Bay. Ask us if you are not sure we cover your address.