Calabasas
Custom ADU and garage conversion in Westlake Village by Construction by Maya. Expand your living space with a beautiful, fully permitted unit, ideal for extended family, rental income or flexible living.
An ADU adds space, value and flexibility to your property. In fact, it is one of the smartest investments a homeowner can make today. That is why we treat every ADU in Westlake Village as a complete design and build project. Founder Hila Hemo leads our boutique team with a listening-first approach.
We build across Westlake Village, from North Ranch to Westlake Island. First, we review your lot and goals. Then, our licensed team handles design, permits and construction. Finally, we hand over a beautiful, fully permitted unit. Above all, pricing stays clear at every step.
We tailor every ADU in Westlake Village to your property and your plans. Moreover, we bring every trade under one roof. So your project runs with one team and one clear plan, from a garage conversion to a brand-new detached unit.
New standalone backyard units with full kitchens and baths. Perfect for rental income or extended family.
Turn an unused garage into a bright, comfortable living space. Often the fastest, most affordable ADU path.
Additions connected to your home with a private entrance. Great for multigenerational living.
Compact units created within your existing home. Smart, efficient and budget-friendly.
Every unit gets a functional kitchen and beautiful bathroom. Built with the same care as our main-home remodels.
Plans, engineering and city permits handled for you. We know California ADU law and local requirements.
California has spent the last several years making ADUs easier to build, and most Westlake Village homeowners are surprised by how much their lot permits. Here is the general picture. Your parcel and your HOA still decide the specifics.
This is general guidance, not legal advice, and ADU regulations change regularly. We confirm the current City of Westlake Village, county and HOA requirements for your specific parcel during your free feasibility review.
Most builders will not discuss numbers until they have walked your property. We think that wastes your time. Below are the ranges we typically see for Westlake Village and Conejo Valley lots, with realistic timelines from design through final inspection.
| ADU Type | Typical Investment | Timeline With Permits | What Drives The Range |
|---|---|---|---|
| Junior ADU | $60,000 - $120,000 | 3 to 5 months | Built within the existing home, so cost follows kitchen and entry scope |
| Garage Conversion | $90,000 - $180,000 | 3 to 6 months | Slab condition, plumbing runs, panel upgrade and insulation requirements |
| Attached ADU | $150,000 - $280,000 | 5 to 9 months | Square footage, roof tie-in, structural work and separate utility service |
| Detached ADU, 400 to 800 sq ft | $200,000 - $320,000 | 6 to 10 months | Foundation, utility trenching distance, site access and finish level |
| Detached ADU, 800 to 1,200 sq ft | $300,000 - $450,000+ | 8 to 12 months | Size, grading on sloped lots, custom design and appliance package |
| Design & Permitting Only | $12,000 - $25,000 | 2 to 5 months | Architectural plans, Title 24, structural calculations and city fees |
These ranges reflect typical Westlake Village and Conejo Valley lots. They are a planning guide, not a quote, and they exclude city impact fees, which vary. After we review your parcel, you receive a written, itemized price with no hidden allowances.
Our ADU process in Westlake Village stays simple, transparent and collaborative. First, we listen. Then, we plan every detail with you. Because of this, you feel confident from the first call to the final reveal.
First, we meet at your Westlake Village property. We review your lot, goals and budget together.
Next, we design the unit and secure permits. You get realistic timelines and clear pricing in writing.
Then our crew builds with precision. Meanwhile, you receive weekly progress updates with photos.
Finally, we complete a careful walkthrough and final inspections. Your unit is ready to live in or rent out.
The worst outcome in an ADU project is spending real money on design, then discovering the unit will not fit, the panel cannot carry it or the HOA will not approve the exterior. We check all of that first, before you commit to anything.
Our feasibility review looks at what your parcel can physically and legally support. Consequently, you get a clear yes, no or here-is-the-alternative answer early, while changing course still costs nothing.
Send us your address and what you are hoping to build. We will tell you what is realistic for your parcel, your HOA and your budget before you spend a dollar on design.
Book A Free Feasibility ReviewWe bring ADU expertise to every Westlake Village neighborhood and the Conejo Valley. Also, we know the local HOA rules, lot requirements and city permits well. As a result, your project keeps moving without delays.
Photos say more than any promise. Here is a look at recent ADU, garage conversion and addition work from our team across the Conejo Valley and greater Los Angeles.
An ADU in Westlake Village opens up endless possibilities. For example, you can house aging parents, welcome adult kids back home or earn steady rental income. From concept to keys, we turn your backyard into your best investment.
There is no shortage of ADU companies in the Conejo Valley. Here is what makes working with a small, owner-run builder different.
We check whether your lot works before you pay for design. Consequently, you never spend months on plans for a unit that was never going to clear setbacks or panel capacity.
Hila and Moses are on your project through a build that can run most of a year. Because we stay small, the person who quotes your ADU is the person who answers your call in month six.
Clients mention this in their reviews unprompted. On a long build you should never have to wonder what happened this week, so we send photos and a status note.
Plans, Title 24, structural calculations and city submittal are handled in-house. Therefore you are not coordinating between an architect, an engineer and a builder who all blame each other.
Our estimates itemize labor, materials and allowances line by line. As a result, you know what a change order costs before you approve it, and surprises stay off your invoice.
License #1034501, general liability and workers compensation on every job. In addition, we provide current certificates before work starts, without you having to ask twice.
Our reputation rests on trust and care. Above all, we deliver on our promises. So read what homeowners across Westlake Village, Calabasas and the Conejo Valley say about their ADU and remodeling projects with our team.
An ADU is the largest project most homeowners ever take on. The ones that go smoothly are the ones where these six things were settled before design started. We work through all of them with you at no cost.
The answer changes the layout, the entrance, the parking and the finish level. A unit for your mother and a unit for a tenant are not the same building, even at the same square footage.
If you have a garage you genuinely do not use, converting it is usually the faster and cheaper route. If you need the storage, a detached unit may be the better long-term answer.
A second full kitchen, HVAC and a laundry hookup add real load. Older Conejo Valley homes frequently need a service upgrade, so we would rather price that now than mid-build.
Trenching to sewer, water and gas is one of the biggest hidden costs on a detached ADU. Distance and what sits between here and there matter more than most homeowners expect.
Cash, a HELOC and a renovation loan each have different timing implications. Knowing which one you are using shapes when we can realistically start.
Tell us the budget you actually have, not the one you think we want to hear. Then we design to it honestly, instead of value-engineering under pressure halfway through.
Let's build something beautiful together! Ready to start your ADU project? Then contact us today. We offer a FREE consultation anywhere in Westlake Village.
4500 Park Granada, Suite 202
Calabasas, CA 91302
Phone: (818) 626-0909
Email: constructionbymaya@gmail.com
Opening Hours: Monday - Friday, 09:00 AM - 06:00 PM
We are a boutique construction company, so we keep our project load small. Because of this, every Westlake Village homeowner works directly with our team from day one.
Also explore our construction services in Westlake Village, including room additions and whole-house remodeling.
Not sure an ADU is the right answer for your property? A room addition or a whole-house remodel sometimes solves the same problem for less. Explore what else we handle nearby.