Build an ADU Around Your Property and Priorities
An accessory dwelling unit adds a separate living space to your property. Whether you’re considering a detached backyard home or an attached unit, the project should begin with how the space will be used and how it will relate to your main residence. XactBuilt helps you develop those priorities into a proposed design and construction scope.
For family living, we can discuss privacy, convenient entry, storage, and a layout suited to everyday routines. For a unit intended for rental use, separate access and a functional kitchen, bathroom, and living area may guide the design. We also consider the outdoor spaces you want to preserve and the connections the new dwelling will need.
Our design-build approach coordinates design, plans, permitting, and construction. That brings the proposed layout, building details, and project scope into the same planning process. Existing drawings can provide a starting point, but you can also contact us while you’re still exploring your options.
Led by Sergio Murillo and based in Whittier, XactBuilt Construction Inc. serves nearby Los Angeles County communities, Pasadena, and selected Orange County markets. If you’re comparing a new ADU with converting your garage or adding space to your main home, tell us what you want to achieve. Share your property location and request a project estimate to discuss the next steps.








XactBuilt provides ADU construction, garage conversions, room additions, kitchen and bathroom remodeling, whole-home renovations, custom home construction, and metal building construction. We manage projects from initial design and plans through permitting and construction.
Yes. Our design-build service includes coordinating the design, project plans, permitting process, and construction. You have one company managing the process from your first ideas through project completion.
No. You can contact us with an idea, inspiration photos, or a general description of what you want to build or remodel. We’ll discuss your goals, property, and next steps, including the design and plans needed for your project.
A garage conversion may be an option for creating a separate living space with a kitchen and bathroom. Feasibility depends on the existing structure, utility connections, property conditions, and applicable requirements. XactBuilt can help you explore the design, permitting, and construction involved.
An accessory dwelling unit, or ADU, provides independent living facilities, including cooking and bathroom facilities. A room addition expands your existing home, such as adding a bedroom or enlarging a living area. The right choice depends on how you want to use the space and what your property can accommodate.
Pricing depends on the project’s size, existing conditions, design, materials, utility needs, and construction scope. A garage conversion, new detached ADU, and kitchen remodel each involve different work. Share your project details with XactBuilt so we can discuss your goals and prepare an estimate based on your scope.
The timeline depends on design decisions, plan preparation, permit review, material availability, and the amount of construction involved. XactBuilt will discuss the anticipated stages and schedule for your project, including the planning and permitting work needed before construction begins.
Yes. XactBuilt is based in Whittier and serves homeowners in Pasadena, Orange County, and surrounding communities. Include your property’s city when requesting an estimate so we can confirm service availability and discuss your project.
- Whittier
- La Habra
- La Mirada
- Hacienda Heights
- Pico Rivera
- Rowland Heights
- Brea
- Fullerton
- Yorba Linda
- Placentia
- Anaheim
- Pasadena
- Arcadia
- Orange
- Tustin
- Irvine
- Huntington Beach
- Newport Beach
- ADU Construction
- Garage Conversions
- Room Additions
- Kitchen Remodeling
- Bathroom Remodeling
- Whole-Home Remodeling
- Custom Home Construction
- Metal Building Construction
Copyright © 2026. XactBuilt Construction Inc. All rights reserved. Powered by Modernology Media. Privacy Policy