THOUGHTFUL DESIGN. TIMELESS SPACES.
Interior Design
Services
Move from design uncertainty to ultimate functionality. Every residence is unique, which is why our approach is entirely tailored to your specific goals. Whether you want to upgrade the kitchen, refresh a single bedroom, or remodel the entire house with layout changes and additions, we adapt to your needs and prepare top interior solutions. We deliver a ready-to-use plan complete with proposed designs and vivid visualizations, ensuring you know exactly what the final space will look like.
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OUR SERVICES
Residential Interior Design
For renovations, upgrades, and real estate investors.
We adapt to your needs and deliver ready-to-use plans complete with proposed designs and vivid visualizations, ensuring you know exactly what the final space will look like.
You receive:
- A clear plan of the proposed design, including exact as-builts and proposed floor plans, is ready to submit for permits.
- The practical design of built-in systems, precise lighting placements, and material selections are fully coordinated.
- Detailed furnishing plans are mapped out to ensure an organic, natural flow throughout your newly remodeled space.
- A full set of visualizations showcases the final product, giving you the flexibility to explore multiple styles, whether eclectic, luxury, or functional minimalism, before making a final decision.
- You receive a complete set of drawings, 3D visuals, and specifications, allowing contractors to follow them perfectly without reinterpretation.
Commercial Interior Design
For retail, corporate offices, hospitality projects, industrial facilities, and property management companies.
Commercial interior design goes beyond aesthetics. It creates environments that improve customer experience, strengthen brand identity, and support efficient business operations.
You receive:
- A complete commercial interior design package, including as-built documentation, proposed layouts, and space planning, prepared for permitting and construction coordination.
- Strategically designed interiors that balance customer experience, employee functionality, brand identity, and operational efficiency.
- Detailed layouts optimized for workflow, circulation, accessibility compliance, and the practical needs of your business operations.
- Photorealistic 3D visualizations that allow you to evaluate the atmosphere, branding, and customer experience of the space before construction begins.
- Design solutions tailored to commercial environments such as offices, retail stores, restaurants, hospitality spaces, healthcare facilities, and mixed-use developments.
Architectural Interior Design
For projects where interior and architecture need to be resolved together.
When the existing architecture no longer supports the evolving needs of the space, the design must integrate structural changes and remodeling solutions.
You receive:
- Expertly coordinated spatial layouts, circulation, and architectural elements designed to prevent conflicts with structural and engineering systems from the earliest stages.
- Stylish and functional design solutions developed within the real conditions of the building, integrating remodeling requirements, technical constraints, and long-term usability.
- A unique architectural and interior design approach where materials, lighting, proportions, and spatial flow work together as one cohesive environment.
- Thoughtful reconfiguration of existing spaces that transforms outdated layouts into modern interiors aligned with current functional and aesthetic needs.
- Clear alignment between architecture, interiors, and technical documentation reducing revisions, delays, and unnecessary interpretation during construction.
- Comprehensive drawings, specifications, and detailing prepared with professional expertise to support accurate execution by contractors and consultants.
- A refined design process focused on creating unique, visually compelling spaces that combine style, functionality, and architectural integrity.
Construction Supervision
For projects where approved design decisions need to be carried through exactly as specified.
- We stay involved through regular site reviews, coordination with contractors, and ongoing clarification throughout the construction process.
- We ensure the quality of execution by continuously comparing construction progress with the approved plans, allowing deviations and mistakes to be identified early before they become costly problems.
- Each milestone is carefully documented and reviewed to keep the project aligned with the original design intent, timeline, and budget.
- You can confidently watch your dream home take shape with greater cost control, professional oversight, and fewer unexpected issues during construction.
- When needed, we provide redlines, corrections, and coordination support to ensure contractors properly execute the design and address incorrectly built areas before the project is completed.
OUR DESIGN PROCESS
Scope & Definition
- The client’s vision is translated into clear requirements for layout, use, budget range, and priorities.
- The space and existing drawings are reviewed to identify conflicts, missing information, and factors that could lead to changes, delays, or budget overruns later.
- The client receives a structured brief with defined scope, fixed inputs, and a fully defined set of parameters before work begins.
- If drawings or models are not available, our team visits the site to document existing conditions and create an accurate 3D model.
Concept Development
- At this stage, we create visualizations to show how the space will look and feel. This helps the client understand the direction early and make decisions before moving into detailed development.
- The concept sets the foundation for all subsequent stages. It ensures that every element works together, enhances the overall result, and reflects a consistent level of attention to detail.
Detailed Design & Documentation
- The approved concept is developed into a complete project. Layout, materials, connections, and dimensions are defined, ensuring all elements fit and align in real conditions.
- Materials, connections, and design logic are clearly defined, transforming the concept into a cohesive, contemporary space. Detailed drawings, schedules, and shopping lists cover everything, from core elements like flooring and doors to lighting, furniture, and decor.
3D Visualization
- 3D visuals show the project as it will be executed, connecting all elements into one clear image. You see proportions, materials, and key elements in context.
- Visuals serve as a reference for everyone involved in execution. They reduce misinterpretation and keep the design intent clear through execution.
Construction Documentation
- You receive a clear, itemized list of all materials, fixtures, furniture, and equipment, including prices and purchase links.
- This gives full visibility into costs and allows you to source items directly, without hidden markups.
- If needed, we can reach out to contractors to request construction proposals based on the developed documentation.
Construction Supervision
- During construction, small changes and on-site decisions can lead to a result that no longer matches the approved design. Construction supervision ensures alignment with the approved concept and intended outcome.
- When questions or constraints arise, everything is addressed within a defined system, preventing random changes and preserving overall logic.
Finishing Touches
- At the final stage, we refine the space on-site. Furniture, decor, and accessories are carefully placed and adjusted to complete the composition and ensure full alignment with the approved design concept.
- If modifications occur during construction, we also prepare a final set of updated as-built plans reflecting all implemented changes, ensuring accurate documentation of the completed project.
WHAT YOU GET
Vision of how the space looks, functions, and feels as a complete system.
Fixed scope, including layout, materials, details, and quantities, so the budget stays predictable.
A build-ready project with drawings, 3D visuals, and specifications that serve as a clear reference for execution.
Coordinated solutions that prevent conflicts between layout, materials, and technical requirements.
A structured list of all items with exact selections and quantities.
OUR PROJECTS
WHO THIS IS RIGHT FOR
Homeowners & Private Clients
- Building a house and facing too many decisions.
- Renovating an existing interior and not willing to invest again in a result that feels average or inconsistent.
- Going through a life change and needing a space that reflects your lifestyle.
- Looking for clarity instead of comparing endless options and making random choices.
- Preparing a property for sale or rent with a focus on value, not just appearance.
Corporate & Office Clients, Real Estate Developers, Property Management Companies
- A scope that is not fully defined while work is already in progress.
- A need for stronger coordination between design, documentation, and execution.
- An architecture team that requires a reliable partner to handle the interior scope without slowing delivery.
- Projects where consistency matters across retail, hospitality, office, or multi-location spaces.
- Facility management and coordination, tenant improvement documentations, and visualisations.
HOW IS THE PRICE FORMED?
Our interior design services start at $2000. Final pricing depends on several factors.
Designed with
Clarity. Delivered
with Confidence.
We combine clear processes, reliable communication, and in-house expertise to deliver exceptional interior design without surprises.
Clarity
The entire interior is defined before execution starts. The full result is clearly defined in advance, with no open questions or assumptions.
Control
A fully defined scope is established early, not during construction. This keeps the scope clear, prevents costly changes, and protects your budget.
Communication
Consistent, timely responses throughout the project. No delays in responses or decision-making.
Team & Standards
Our interior designers work as a trained in-house team under a single standard. Revit-based workflows with compatibility across CAD, SketchUp, and IFC ensure consistency and accuracy.
Our Clients
Local Aerial Interior Design Services
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![Beverly Hills]()
Beverly Hills
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![Glendale]()
Glendale
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Laguna Beach
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![Long Beach]()
Long Beach
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![Los Angeles]()
Los Angeles
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![Malibu]()
Malibu
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![Orange]()
Orange
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![Pasadena]()
Pasadena
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San Diego
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![Santa Barbara]()
Santa Barbara
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![Santa Clarita]()
Santa Clarita
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![Ventura]()
Ventura
FAQs
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We work on a wide range of projects, from residential interiors to commercial spaces. Each project is approached based on its specific requirements and scope.
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Most of the drafting, modeling, visualization, and project development is completed remotely, allowing for an efficient and flexible design process. Site visits are typically scheduled at the beginning of the project to document existing conditions and again upon completion to review the final result and refine finishing details.
If Construction Supervision is included in the scope, additional site visits are scheduled throughout the project after major construction milestones to review progress, verify alignment with the approved plans, and address any necessary adjustments during execution.
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Before starting any work, we need accurate documentation of the existing space. If plans are not available, we arrange an on-site visit to scan and document the property, creating a reliable base set of drawings and 3D model for the project.
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We offer one-on-one video calls with screen sharing, where you can follow changes in real time and make adjustments as they happen. You work directly with a virtual design specialist with extensive experience in 3D modeling. Other project participants can join these sessions at your request.
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Yes. We can work with architects, architecture studios, developers, and project teams. Our role is to define the interior scope and align it with the architectural and technical framework. We integrate into existing workflows and coordinate decisions so the project moves forward without conflicts or delays.
Tell us about your interior design project.
Get a clear response on scope and next steps.
Contact us
info@alterpex.com
(415) 696-4180
MAIN OFFICE
27200 Tourney Rd, Suite 410
Santa Clarita, CA 91355
LOS ANGELES METROPOLITAN
1180 South Beverly Drive
Los Angeles, CA 90035
SAN FRANCISCO BAY AREA
50 California St, Suite 1500
San Francisco, CA 94111
Contact us to streamline your process with our Interior Design Services
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