Pool house ADUs designed for the way you actually use the pool.
Most pool house ADUs are custom — the relationship between the ADU door, the pool deck, and the main house is too specific to ship as a stock plan. We publish one Signature Home that adapts naturally (the Sunset, with a bi-fold patio door) and a custom design-build tier for everything else.
Real custom pool house ADUs across Los Angeles
Every pool house ADU is a custom design problem — how the structure relates to the pool deck, the main house, the sun, and the way the owner actually wants to live. Here are projects we have designed and permitted across LA County.
Modern Ranch-Style ADU + Pool Lounge
800 sqft, 2BR/2BA detached pool house ADU with two connected zones: a guest suite with 14-foot cathedral ceilings and a full-size kitchen, and a separate pool lounge with a 10-foot tri-fold glass patio door, pool bathroom, and outdoor shower. Interiors by Rebecca Lyon (Lyon Design Lab).
Read the full case study · See the Woodland Hills project →
Pasadena Pool House ADU
Two-story custom pool house ADU for a work-from-home couple who needed a dedicated office plus poolside entertaining space without compromising the luxury pool. Accordion patio doors open the first floor to the pool deck.
Read the case study →
Northridge Guest House & Pool House
416 sqft detached studio designed for dual use: poolside guest suite when family visits, pool house and rec room the rest of the year. Vaulted ceilings, full-size kitchen, detached for privacy.
Read the case study →
The Sunset Adapted as a Pool House
The productized option. 480 sqft 1BR/1BA, $239K all-inclusive. The bi-fold patio door on the pool-facing elevation creates the indoor-outdoor flow a pool house brief calls for — without the custom-design timeline.
See The Sunset →Want to see the rest of our built work? Browse the full LA portfolio →
On this page
What is a pool house ADU?
A pool house ADU is a fully permitted Accessory Dwelling Unit positioned to function as a poolside structure. It contains everything required of any other ADU under California law: a full kitchen with a cooking facility and sink, a full bathroom, a sleeping space, a private entrance, and independent utilities. The difference from a standard ADU is positional — the unit is sited to relate to a pool deck instead of an open backyard — and the design priorities follow from that position.
A pool house ADU is not a cabana. A cabana is an accessory structure: changing space, covered seating, sometimes a bathroom and storage, but no kitchen. Cabanas do not require an ADU permit, do not add habitable square footage to the property, and cannot be rented as a residence. A pool house ADU is the only structure that can sit poolside and generate rental income, add to property value, and qualify for state-law incentives that exempt sub-750 sqft units from impact fees.
The trade-off: a pool house ADU has to clear ADU code (kitchen requirements, egress, fire-rated construction within certain distances of the property line, separate utilities) plus the pool-safety code that governs any habitable structure adjacent to a swimming pool. A cabana clears a lighter standard. Most homeowners who build pool houses build cabanas. The few who build pool house ADUs do so because the rental income, the flexibility, and the property-value bump justify the additional permitting work.
The Sunset — the Signature Home that adapts to a pool house brief
We do not publish a "pool house" Signature Home. A pool house ADU is too specific to the property to ship as a stock plan. But of our nine Signature Homes, The Sunset adapts most naturally to a pool house brief.
The Sunset is 480 square feet, one bedroom, one bath, fixed-price at $239,000 all-inclusive. The architectural feature that matters for pool house use is the bi-fold patio door on the pool-facing elevation — a multi-panel glass door that folds open across the entire wall. Closed, it is a wall of glass with the energy performance of a high-efficiency window assembly. Open, the living and dining area extends onto the patio without a doorway interrupting the flow. That is the single move that defines whether a structure feels like a pool house or like a small home that happens to sit near a pool.
What you give up by going with The Sunset instead of a custom design: the floor plan is fixed (you cannot move the kitchen to the pool-facing wall, for example), and the pool-deck connection is handled by site work outside the ADU envelope. What you gain: fixed pricing, a permit-ready plan, a 6–7 month build, and the same finish standard as every other Signature Home we deliver.
The Sunset — Signature Home that adapts to pool house use
480 sqft 1BR/1BA, $239,000 all-inclusive. The bi-fold patio door on the pool-facing elevation creates the indoor/outdoor flow a pool house brief calls for. The productized option for homeowners who want pool-house lifestyle without the custom-design timeline.
Custom pool house ADUs we’ve designed
Most pool house ADU prospects need a custom design. The pool itself constrains where the ADU sits, where the openings go, and how the structure handles the sun. Two pool houses on two different properties almost never use the same plan.
Custom Design-Build is the right tier when you want any of the following:
- A kitchen that opens directly to the pool deck (a feature The Sunset's fixed plan does not allow without moving the kitchen wall)
- An outdoor shower routed off the ADU's plumbing
- An enclosed glass corridor or covered walkway connecting the ADU to the main house
- Glazing that frames a specific view (the pool, a mountain line, an existing tree on the property)
- A footprint and roof profile that resolve against an unusual lot shape, a slope, or an existing structure you are working around
- Materials, finishes, or fixtures outside the Signature Home configurator
Custom pool house ADUs typically run $300,000 to $500,000+ depending on size, finish level, and site complexity. The fixed price is determined during pre-construction once the design is locked — same fixed-price guarantee as our Signature Homes, at the bespoke tier.
We cap Custom Design-Build at 3–5 projects per year so each one gets the full attention of our design team. If a pool house brief calls for true customization, the first step is a Backyard Review — we use that call to decide together whether your project is right for The Sunset or for custom.
Design considerations specific to pool houses
A few decisions matter more in a pool house ADU than they do in a typical detached ADU:
Sun orientation and glazing
The wall facing the pool wants glazing. The wall facing afternoon sun does not — or, if it does, it wants overhangs and shading. Pool orientation varies by lot, so the right move is property-specific: where the bi-fold opening lands, where the overhang goes, and where the AC has to work hardest are all downstream of where your pool sits relative to the sun. Get this wrong and the unit runs the AC at noon all summer.
Pool-deck transition
The strongest pool houses have a transition zone between the ADU and the pool itself — a covered patio, a tile landing, or a shaded lounge area — that is neither fully indoor nor fully water. This is where dripping bathing suits land, where towels hang, and where the ADU door can stay open without tracking water inside. Skip this and the ADU's flooring suffers.
Bathroom layout and water flow
The bathroom in a pool house ADU does double duty: primary bathroom for any tenant or guest, and pool-changing room for daily swimmers. Layout matters — a bathroom you can reach without walking through the bedroom keeps the unit functional for both uses. An outdoor shower routed off the same plumbing stack is a popular upgrade.
Storage
Pool gear is bulky and seasonal. Pool houses without dedicated storage end up with pool floats and umbrella stands cluttering the living area. Built-in storage on the patio or in a closet adjacent to the entry solves this before it becomes a problem.
Acoustic and visual separation from the main house
When the ADU rents, the renter shares the pool deck with the owner. Glazing and door placement that respect both parties' sightlines is the difference between an asset and a friction point. Custom design handles this; The Sunset's fixed plan is oriented for the standard configuration and may need site work to soften the sightline.
What a pool house ADU costs in 2026
A custom pool house ADU from a generic contractor typically starts in the $200K–$300K range on the proposal. Final invoices run 20–40% higher by the time the project hands over keys — change orders, scope creep, and “unforeseen conditions” surcharges that almost always materialize on bespoke construction. Our pricing is more expensive than that first quote, and less expensive than the final invoice. The number on our contract is the number you pay.
Pool house ADUs cost more than equivalent non-poolside ADUs of the same size. The pool itself drives the premium: additional permitting, additional code work, and additional site work to tie the structure into an existing pool deck.
The Sunset Signature Home adapted to pool house use
$239,000 all-inclusive for the ADU itself. Site work specific to the pool (deck modifications, additional pool fencing, drainage tie-ins, and relocating pool equipment when the ADU footprint requires it) is bid separately during pre-construction. Typical site-work premium for a poolside placement: $15,000 to $30,000, depending on the condition of the existing pool deck, equipment placement, and how integrated the finished build needs to feel.
Custom pool house ADU
$300,000 to $500,000+ all-inclusive. The range reflects three variables: footprint (most custom pool houses run 600 to 1,000 sqft), finish level (fully integrated indoor/outdoor design and exterior-grade interior materials push the upper end), and site complexity (hillside lots, existing tree preservation, and structural ties to the main house all add cost).
What pushes the budget up
- Outdoor kitchen integration — if the ADU kitchen extends to the pool deck via a window-bar opening, add $15K–$30K for the pass-through and the deck-side counter
- Outdoor shower — $5K–$15K depending on enclosure and finishes
- Pool-deck rebuild — if the existing deck has to be partially or fully replaced to accommodate the new structure, this is bid by a pool contractor outside the ADU scope
- Pool fencing — California pool-safety code requires a permanent barrier between the pool and any habitable structure; updates to existing fencing run $3K–$15K
Permits, setbacks, and the pool itself
A pool house ADU clears two parallel permit tracks: the ADU permit and the pool-safety code that governs any habitable structure adjacent to a swimming pool.
ADU setbacks (state law, preempts city)
California Gov. Code § 66314(d)(7) sets a 4-ft minimum side and rear setback for any detached ADU under 800 sqft. The state law preempts more restrictive city setbacks for ADUs under that footprint. The Sunset's 480 sqft envelope clears the state-law minimum on virtually every California single-family lot.
Pool-safety code
Pool fencing requirements are governed by California Health & Safety Code § 115922 and the local building code. A permitted pool must have a barrier (fence, wall, or building wall) at least 60 inches tall, separating the pool from any structure or property access. Doors that open from a habitable structure into the pool area must have self-closing, self-latching hardware with the latch positioned at least 54 inches off the deck.
Distance from pool to ADU
Most cities do not set a specific minimum distance between an ADU and a swimming pool, but the building code does require adequate clearance for fire access and for inspection of the pool equipment. In practice, a 3- to 5-ft minimum between the pool deck and any ADU wall is what most jurisdictions enforce through their plan-check process.
Glazing near the pool
Windows and glass doors within 60 inches of a pool deck must be tempered safety glass. California Residential Code § R308.4.5 governs this. Standard for any pool-facing fenestration — confirm your contractor specs it.
Utility connections
A pool house ADU needs its own electrical sub-panel, a separate water service or sub-meter (varies by city), and a sewer or septic connection. Tying the ADU's drainage into an existing pool-equipment line is not permitted — ADU drainage runs to the city sewer or main septic system, not the pool's pump-and-filter loop.
Pool house ADU vs. cabana — the legal distinction matters
The line between a pool house ADU and a cabana decides whether your structure adds rentable square footage, qualifies for the state-law impact-fee exemption, and increases your assessed property value. It is the most consequential decision in a pool house project.
What makes it an ADU
California Health & Safety Code § 17958.1 defines the minimum requirements for an Accessory Dwelling Unit: a kitchen with a cooking facility, sink, food-preparation counter, and storage cabinets; a separate bathroom; an independent entrance; and independent utility connections. If your pool structure has all four, it is an ADU. Permitted as such, rented as such, taxed and valued as such.
What makes it a cabana
A cabana is an accessory structure that does not contain a kitchen. It may have a bathroom, a changing area, covered seating, storage, and an indoor lounge. It is permitted as a residential accessory structure (not a dwelling unit), cannot be rented as a residence, and does not count toward the property's habitable square footage. Cabanas are cheaper to permit and build but produce zero rental income and do not move the property's assessed value the way an ADU does.
Why the distinction matters financially
- Rental income: A pool house ADU rents for $2,200–$2,800+ per month. A cabana cannot be rented at all.
- Property value: Permitted ADUs typically add $200K–$400K to LA-area home value. Cabanas add a fraction of that.
- Impact fees: ADUs under 750 sqft are exempt from impact fees under Gov. Code § 66318. Cabanas may still owe fees depending on the city.
- Resale: An ADU shows on the appraisal as a second dwelling. A cabana shows as an outbuilding.
If the question is "do I want a permitted second residence that pays for itself" the answer is the ADU. If the question is "do I want a poolside lounge with a bathroom and a roof" the answer is the cabana.
Renting a pool house ADU
A permitted pool house ADU rents as a long-term residence under California's ADU law. The Sunset's market rent range applies here: $2,200 to $2,800+ per month in most LA neighborhoods. Pool-adjacent placement on higher-value properties typically pulls toward the upper end of the range, and on view lots can clear it. Custom pool house ADUs at 600–1,000 sqft rent at the 1BR-Plus or small 2BR rate — $2,800 to $3,800+ per month depending on layout.
A few rental-specific considerations:
- Pool access: Decide upfront whether the renter has pool privileges. Most landlords either grant full access (factored into the rent premium) or restrict to specific hours. The lease should be explicit; ambiguity creates conflict.
- Shared yard: The pool deck is, by definition, shared space. Some renters love this; others avoid it. Disclose during the listing.
- Short-term rental: California law (Gov. Code § 66314(e)) allows ADU rentals of 30+ days. Most LA-area cities prohibit short-term rentals on ADUs of any size. Treat the pool house ADU as a long-term asset.
- Pool liability: A poolside ADU rental increases liability exposure. Update your homeowner's policy and consider an umbrella policy before listing.
Pool house ADU questions, answered
The questions homeowners ask before they build poolside, and how the ADU code interacts with the pool-safety code.
What’s the difference between a pool house and a pool house ADU?
A pool house — sometimes called a cabana — is an accessory structure: a changing room, a covered seating area, a bathroom and storage. It does not contain a kitchen and is not a permitted residence.
A pool house ADU is a fully permitted Accessory Dwelling Unit that happens to sit poolside: full kitchen, full bathroom, sleeping space, separate entrance, and the ability to be rented as a long-term residence. Only the ADU adds rentable square footage and resale value.
Can I build a pool house ADU next to my swimming pool?
Yes, subject to standard ADU setbacks (4-ft minimum, state-law preempted) plus your city’s pool-safety rules. Most cities require a 3–5 ft minimum between the pool deck and any habitable structure, plus updated fencing and self-closing doors. We handle these constraints during pre-construction design.
How much does a pool house ADU cost in Los Angeles?
The Sunset Signature Home adapted to pool house use: $239,000 all-inclusive for the ADU, plus $15K–$30K of site-specific work to integrate with the existing pool deck (including relocating pool equipment when needed).
A custom pool house ADU runs $300,000 to $500,000+ depending on size, finish level, and site complexity.
Does a pool house ADU follow the same setback rules as any other ADU?
Yes. State law sets a 4-ft minimum side and rear setback for any detached ADU under 800 sqft (Gov. Code § 66314(d)(7)). The pool itself does not change the ADU envelope rules; pool-specific code (fencing, glazing, self-closing doors) layers on top.
Can I rent out my pool house ADU?
Yes. California law (Gov. Code § 66314(e)) protects your right to rent any permitted ADU for 30 days or longer regardless of HOA or local restrictions. Short-term rentals under 30 days are restricted in most LA-area cities; treat the pool house ADU as a long-term rental asset for planning purposes.
How long does it take to build a pool house ADU?
The Sunset adapted to pool house use: 6–7 months from contract to certificate of occupancy.
A custom pool house ADU typically runs 8–12 months due to additional design iteration, structural engineering for any glazed openings, and coordination with the existing pool deck.
Do I need a separate permit for the pool work itself?
If the project includes pool-deck rebuilds, new pool fencing, or changes to pool equipment, those scopes carry their own permits handled by a licensed pool contractor. The ADU permit covers the ADU; pool work is bid and permitted separately. We coordinate the two timelines so they do not conflict during construction.
See a pool house ADU
on your actual pool deck.
We’ll screen-share to your property, place the Sunset on the pool deck, show how the setbacks and pool-safety code interact, and give you a fixed number — before you commit to anything. If a custom pool house is the right fit, we’ll set that up as a separate design engagement after the Backyard Review. 15 minutes.
15 minutes · No obligation