Expand Your Home Without Compromising Quality.
Additions and ADUs
Thoughtfully Designed to Feel Like it Was Always Meant to Be There.
Whether your family needs more living space, a private guest suite, or a detached ADU, expanding your home should feel like a natural extension of the original design. A well-planned addition creates the extra room you need without sacrificing the character, flow, or functionality of the home you already love.
Built To Last Construction, Inc. designs and builds home additions and ADUs that blend seamlessly with your existing home while supporting the way your family lives today and in the future.
We approach every addition with the same level of planning and craftsmanship as a new home. From structural design and material selection to the finishing details, our goal is to create a space that looks, feels, and performs as though it has always been part of the home.
What is included
- Site assessment and feasibility review
- Permit coordination and planning
- Foundation, framing, and structural work
- Plumbing, electrical, and HVAC systems
- Insulation, drywall, and interior finishes
- Roofing, waterproofing, and exterior finishes
We’ve completed home additions and ADU projects throughout Culver City, Westchester, Venice, and surrounding Westside communities, helping homeowners create more functional living space without sacrificing the character of their homes.
How We Work
A Thoughtful Process From Planning To Completion.
01
Evaluate Your Home
Every project begins with understanding your home, your goals, and what’s possible. We evaluate the property, discuss your vision, and determine the best approach for your addition or ADU.
02
Design and Planning
Working with your architect or design team, we coordinate plans, permits, and project details before construction begins. Careful planning helps minimize delays and keeps the project moving efficiently.
03
Construction & Craftsmanship
Once construction begins, we focus on quality craftsmanship, clear communication, and attention to detail. From the foundation to the finishing touches, every phase is completed with long-term performance in mind.
04
Final Review and Handoff
Before we consider the project complete, we perform a detailed walkthrough, address any remaining punch list items, and make sure your new space blends seamlessly with the original home and is ready to enjoy.
Our Recent Projects
The Built To Last Difference
More Than Extra Square Footage. Built Around Your Life.
The best additions and ADUs don’t look like additions at all. They feel like a natural extension of your home, matching its architecture, flow, and character while adding the space your family needs. That’s the standard we bring to every project.
At BTL Construction, we approach additions and ADUs with the same long-term thinking, quality craftsmanship, and attention to detail that we bring to new home construction. Every decision is made with the goal of creating a space that performs well, blends seamlessly, and adds lasting value to your home.
Designed to Blend In
Every addition and ADU is thoughtfully designed to complement your home’s existing architecture, materials, and overall character. The goal is a finished space that feels original, not added later.
We pay close attention to rooflines, window placement, exterior finishes, and interior transitions so the completed project feels cohesive and adds lasting value to your home.
Built Around Your Lifestyle
Whether you’re creating more room for a growing family, accommodating guests, or adding flexible living space, we tailor each project to support the way you live today while planning for the future.
Thoughtful layouts, natural traffic flow, and practical storage are considered from the beginning so your new space works as well in everyday life as it does on paper.
Quality Without Shortcuts
From structural work to the finishing details, we believe every phase deserves the same level of care and craftsmanship. Doing the job right the first time helps protect your investment for years to come.
We focus on proven building methods, quality materials, and careful execution instead of temporary fixes, giving you an addition that performs as well as it looks.
Guidance You Can Trust
We’ll help you navigate important decisions throughout the project, explaining your options, answering your questions, and providing honest recommendations that put your long-term goals first.
Our role is to help you understand the tradeoffs behind each decision so you can move forward confidently, knowing your investment is being planned with the future in mind.
What to Expect
An ADU Or Addition Is A Journey. Here's What To Expect From Start To Finish.
Building an addition or ADU is a major investment, and every successful project starts with a clear understanding of your home and your goals. We begin by evaluating your property, discussing how you plan to use the new space, and identifying any zoning, setback, or site considerations that could influence the design. Taking the time to answer these questions early helps create a smoother building process from start to finish.
Once the project moves into planning, we work closely with your architect or design team to coordinate drawings, permits, and construction details before work begins. Our experience across Westside communities means we’re familiar with the permitting process and local requirements that can affect additions and ADUs.
Construction is managed with the same long-term mindset that defines every BTL project. You’ll receive regular communication throughout the build, and every phase is carefully coordinated to maintain quality from foundation to final finishes. Many additions also include kitchen renovations or bathroom renovations, allowing us to complete the new living space as one cohesive project rather than treating each improvement separately.
Before we consider the project complete, we perform a thorough walkthrough, address any remaining details, and ensure the new space integrates naturally with the rest of your home. Our goal isn’t simply to add square footage. It’s to create a finished space that feels original, functions beautifully, and continues serving your family for years to come.
Questions Homeowners Commonly Ask
Planning Starts With Good Answers.
We’ve answered a few of the questions we hear most often before homeowners begin an addition or ADU project.
Do You Build ADUs Throughout The Westside?
Yes. We build additions and ADUs throughout Manhattan Beach, El Segundo, Playa del Rey, Malibu, and Palos Verdes, along with surrounding Westside communities. Every city has its own zoning, permitting, and planning requirements.
We’re familiar with navigating local processes. If you’re unsure whether your property falls within our service area or whether your project has unique requirements, we’re happy to review your plans and discuss the best path forward before construction begins.
Can You Help Me Decide Between An Addition Or An ADU?
Yes. During the initial planning phase, we will discuss your property, budget, and any long-term goals to help determine whether an addition or a detached ADU is the better fit for your needs, available space, and the way you plan to use it.
Rather than recommending the same solution for every homeowner, we’ll explain the benefits and tradeoffs of each option so you can make an informed decision that supports the way you want to live.
Can You Build My Addition In Phases?
Some projects can be completed in phases depending on the scope, budget, and layout of your home. We’ll discuss your priorities upfront and recommend an approach that makes sense without compromising the quality.
When phased construction is appropriate, we’ll help establish a logical sequence so each stage is completed correctly and future work integrates seamlessly with what has already been built.
Will My Addition Look Like Part Of My Home?
That is always our goal. We carefully plan each addition or ADU to complement your home’s existing architecture, materials, and overall character so the finished space feels cohesive rather than like an afterthought.
From rooflines and exterior finishes to interior transitions and trim details, we focus on creating an addition that feels like it has always been part of your home while adding lasting value for years to come.