The Westside Model: Our Design-Build Process
One team. One process. From the first line on paper to the last detail on site.
Most custom homes are built in fragments. An architect designs something. A builder prices it. An engineer reviews it. Contractors execute it. Nobody owns the outcome, and the gaps between those separate teams are where delays, cost overruns, and the quiet erosion of design intent happen.
The Westside Model is a true design-build process for custom homes — an entirely different system from the fragmented approach most homeowners encounter. Architecture, engineering, construction, and supply chain are not separate disciplines coordinated after the fact. They are one integrated operation…
The result: a custom home designed and built by the same team, resolved before construction begins, and delivered with the precision and accountability that this level of investment deserves.
What Is the Design-Build Process for a Custom Home?
Design-build is a delivery model where one team holds a single contract for both designing and building your home. Instead of hiring an architect, then handing their drawings to a separate builder, you work with one integrated team accountable for the entire outcome — design, engineering, construction, and supply chain.
It is how complex buildings have been delivered at the highest levels of commercial construction for decades. Commercial projects could not tolerate the coordination failures that residential building still accepts as normal, so the systems evolved: problems get solved before construction begins, teams are integrated, decisions are modeled, not guessed. Residential never made that shift. The Westside Model brings that proven commercial-grade design-build process to the custom home.
What Makes the Westside Model Different
The model is built on four integrated capabilities. Each one addresses a specific failure point in traditional residential construction. Together, they replace the chaos most homeowners expect.
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Every critical decision is resolved before construction begins. Because our architecture and construction teams are the same team working from the same model, what gets designed gets built, exactly as intended. No handoffs. No translation errors. No moment where a design detail that mattered is lost between one firm and another.
Key decisions are locked upfront, not made in the field under time pressure. That means the design you approve is the home you move into.
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Every Westside Build site runs on a live digital twin, a fully coordinated 3D model that every trade on site works from and complies with. We identify variances between what is being built and what was designed in real time, and we resolve them before they compound into delays, rework, or cost overruns.
This is commercial-grade quality control applied to a custom home. Most residential builders catch problems at the end. We catch them before they happen.
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Most builders are at the mercy of their supply chain. We own ours. Through DG Lumber, we source directly from the mill. Across the region, we operate fabrication facilities and warehouses with secured material storage for active projects.
That ownership structure protects every client’s budget and timeline better than any independent builder can. When materials are scarce, we are not waiting in the same queue as everyone else.
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Westside Build is not a company that manages projects remotely. Our founders are embedded in the communities they build, accessible to every client, and committed to ensuring nothing comes as a surprise. Transparent cost documentation from day one. Consistent updates throughout. You always know where things stand.
One of our founders lost his home in the Palisades fires. This work is personal. That is reflected in how we show up for every client, on every project.
The Five Design-Build Phases
Here are the five steps of the Westside design-build process for building a custom home, each connected, each managed by the same team, with no handoffs between them. From first conversation to final walkthrough, this is how a custom home gets built when one team owns the outcome.
Phase 1 of 5
Discovery & Vision
Every project begins with listening. Not to what a homeowner thinks they are supposed to want, but to how they actually live, how their family moves through a space, what they want their home to do for them, what success looks and feels like long after move-in.
This phase is not a checklist. It is a genuine effort to understand the project deeply enough to design and build it faithfully. The questions we ask in discovery shape every decision that follows.
- Goals, lifestyle, and long-term use fully understood
- Site conditions and constraints evaluated
- Design direction and architectural context established
- Preliminary timeline and budget framing aligned
Phase 2 of 5
Architecture & Design
Design at Westside Build is not a separate service handed off to another firm. It is the creative foundation of the integrated model, developed in direct conversation with engineering and construction from the first sketch, so the home that emerges is both architecturally resolved and exactly buildable.
Through NOWN and our partner architects, we develop designs tailored to the owner, site, and neighborhood, not adaptations of a template. Every spatial decision, material choice, and structural approach is made with the construction team in the room.
- Concept architecture developed alongside construction feasibility
- Interiors, materials, and finishes developed as a coherent whole
- Engineering coordination begins in design, not after
- Design intent protected through to delivery by the same team
Phase 3 of 5
Preconstruction & Engineering
This is where the Westside Model does its most important work. Before a permit is filed or a shovel touches the ground, your home is built once — digitally — in a fully coordinated live model that resolves every system, every conflict, and every decision that would otherwise surface mid-construction at maximum cost and minimum control.
Preconstruction is not preparation for building. It is the phase where the quality of the build is determined. Everything that follows is the execution of a plan that is already complete.
- Full digital twin built before groundbreak, every wall, beam, pipe, and system coordinated
- Structural and mechanical engineering aligned in the model
- All key decisions locked upfront, not made in the field
- Permit documentation prepared with full coordination across disciplines
- Materials identified, long-lead items procured, supply chain secured
- Construction schedule validated against real constraints
Learn about digital coordination
Phase 4 of 5
Construction
Construction on a Westside Build project is the execution of a fully resolved plan. The site does not operate from separate drawings reviewed by separate parties. Every trade works from the same live digital model, continuously monitored against real-time site conditions.
Variances — where what is being built differs from what the model specifies — are identified and corrected as they occur, not discovered in a final walkthrough. The result is a home built precisely as designed, on the timeline planned, to the budget approved.
- Live digital twin as the control point for every trade on site
- Real-time scanning overlaid against the model throughout construction
- Variances identified and resolved before they compound
- Consistent progress updates — you always know where things stand
- Supply chain ownership protecting timeline and cost certainty
Phase 5 of 5
Completion & Handover
The final phase is not a formality. It is a thorough, structured process that ensures you move into a home that is complete in every sense, where every system has been tested, every finish has been reviewed, and every question you have about how the home works has been answered.
We provide complete documentation of all systems, materials, and specifications. And we remain accessible after handover, because a relationship built over the course of a complex project does not end at the front door.
- Comprehensive final walkthrough covering all systems and finishes
- Full documentation package — warranties, specifications, material records
- All systems tested and confirmed before handover
- Ongoing support and accessibility after move-in
How Long Does It Take to Build a Custom Home?
The honest answer: it depends on scope, site, and permitting jurisdiction. A new custom home build timeline typically runs 18 to 30 months from first conversation to move-in — roughly 4–8 months in design and preconstruction, then 12–20 months of construction, with significant variance based on size, complexity, and site conditions.
What the Westside Model changes is not the calendar so much as the certainty within it. Because the home is fully resolved digitally before groundbreak, the construction timeline we commit to is the construction timeline we hit. Most overruns in custom home building come from decisions made too late; ours are made before the first shovel.
The Model Under Pressure
The real test of any building system is how it performs when the stakes are highest. The Palisades rebuild is that test.
In the months following the 2025 fires, Westside Build became one of the most active builders on the Westside, driven by reputation, not marketing. We are currently managing one of the largest coordinated rebuild portfolios in the Palisades, bringing the Westside Model’s clarity and coordination to one of the most complex residential recovery efforts Los Angeles has ever faced.
Hundreds of families. Simultaneous projects. Insurance coordination, permitting complexity, hillside engineering, and supply chain pressure all at once. This is what the model looks like at scale. And it is performing.
How to Begin Building a Custom Home with Westside Build
Starting a custom home is usually the hardest part of the process. There is no commitment required to begin the conversation. We will walk you through how the design-build process applies to your site, your goals, and your timeline — and you will leave the first conversation with a clearer picture of what building your home actually involves.
Let's start. Rebuild LA.
Together, we are rebuilding our homes and revitalizing our communities. Provide your email, and we'll contact you for a personal start.