Building an ADU in Artesia. Rules, costs, timeline.
What Artesia Municipal Code Article 45 actually allows — a two-track ADU code the City has kept current through January 2026 — and what an all-in build costs on one of Artesia's compact lots in 2026.
Reviewed by CALI ADU’s ADU specialists · August 2026
What you can build — at a glance
Reviewed by CALI ADU’s ADU specialists · August 2026
Max ADU size
850 sqft (studio/1 BR) · 1,000 sqft (2+ BR); attached also ≤50% of the primary’s floor area; conversions of existing space have no cap (AMC 9-2.4506; Gov. Code § 66321(b)(2); § 66323(a)(1))
Detached height
16 ft · 18 ft within ½ mile of a major transit stop or high-quality transit corridor, +2 ft to match the primary’s roof pitch (max 20 ft) · 18 ft on multistory-multifamily lots (AMC 9-2.4505(b); Gov. Code § 66321(b)(4))
Attached height
The lesser of 25 ft or the zone’s height limit, up to two stories (AMC 9-2.4505(b)(4); Gov. Code § 66321(b)(4)(D))
Side & rear setbacks
4 ft · none for in-place or in-kind rebuilds · 25-ft front setback, which may never force the unit below 800 sqft (AMC 9-2.4506; Gov. Code § 66314(d)(7); § 66321(b)(3))
Units per SFR lot
A conversion ADU + a JADU + a new detached ADU ≤800 sqft can combine — and Artesia codifies the stack locally as its Class 1 track (AMC art. 45; Gov. Code § 66323(a)(1)–(2); HCD Handbook, Mar. 2026, p. 17)
Parking required
1 space per ADU or per bedroom, whichever is less; tandem and setback-area parking OK; waived near transit, in a historic district, for conversions, and more — and no replacement parking when a garage is converted (AMC 9-2.4506; Gov. Code §§ 66322, 66314(d)(11))
Permit timeline
60 days · ministerial review, no hearing — with a 15-business-day completeness check codified locally (AMC 9-2.4504; Gov. Code § 66317)
Design & privacy standards
Class 2 ADUs must match the primary’s materials, colors, and dominant roof slope; down-lighting only; no direct window or door sight line into an adjoining home; near a California Register property, the ADU may not be visible from the street (AMC 9-2.4506)
DetachedNew single-story unit — Class 1 by-right at ≤800 sqft / 16 ft, or Class 2 up to 850 / 1,000 sqft (AMC 9-2.4505, 9-2.4506; Gov. Code § 66323(a)(2))
AttachedUp to 50% of the primary’s floor area — but no percentage rule may force the unit below 800 sqft; up to 25 ft and two stories (AMC 9-2.4505(b)(4), 9-2.4506; Gov. Code § 66321(b)(3)–(4))
Garage conversionWithin the existing structure, +150 sqft for entry and exit; concurrent demolition permit; no replacement parking (AMC art. 45, 9-2.4504; Gov. Code § 66314(d)(11))
Interior conversionCarved from existing permitted space of the home; no square-foot cap (Gov. Code § 66323(a)(1))
Junior ADUUp to 500 sqft inside the single-family home, on single-family-zoned lots (AMC 9-2.4505; Gov. Code § 66313(d))
Per Artesia Municipal Code, Title 9, Ch. 2, Article 45 (§§ 9-2.4501–9-2.4509, current through Ord. 25-978, Jan. 2026) and Gov. Code §§ 66310–66342. Cross-checked against the HCD ADU Handbook (March 2026). Full citations in the sections below.
Two documents govern an ADU in Artesia. California state ADU law
— Government Code §§ 66310–66342 — sets the
statewide floor for size, height, setbacks, parking, owner-occupancy,
junior ADUs, and the 60-day ministerial clock. On top of that sits the
City’s own ADU article: Artesia Municipal Code, Title 9,
Chapter 2, Article 45 (§§ 9-2.4501–9-2.4509).
Here is what makes Artesia unusual, in a good way: the local
code is current. The City has amended Article 45 nine times
since 2020, most recently in January 2026. Each round of state reform
got folded in as it landed — the SB 1211 multifamily rules, the
AB 2533 legalization pathway, the SB 543 completeness clock, and the
AB 1154 junior-ADU rule. Many neighboring cities still run pre-2020
text that state law has to override. Artesia’s article, by
contrast, reads like the current Government Code with local detail
added. That means fewer surprises: the rule on the books is, almost
everywhere, the rule that governs.
State law. California Government Code
§§ 66310–66342 sets the statewide floor every city
must meet or beat, and preempts any local rule that is narrower
(Gov. Code § 66316).
Local ordinance. Artesia Municipal Code Article 45
(Accessory Dwelling Units), adopted 2020 and amended through
Ordinance 25-978 (January 12, 2026). It organizes ADUs into two
tracks — Class 1 and Class 2 — explained below.
HCD commentary. The HCD ADU Handbook (March 2026
update) is the Department’s official enforcement position. We
cross-check every rule on this page against it.
Last verified against primary sources — including the codified
text of Artesia Municipal Code Article 45 — on August 10, 2026.
State ADU law changes every January 1. If you are reading this later,
confirm the current rules before you commit to a design — or
call us and we will confirm them for you.
What you can build on your lot
Everything in this section is grounded in Artesia Municipal Code
Article 45 and the California Government Code it implements, with
state-law citations called out where they carry the rule. Assume
Article 45 under each heading unless we tell you otherwise.
Number of ADUs per lot
Single-family lot. The code’s Class 1 track
allows a conversion ADU created from existing space of the home or
an accessory structure (with up to 150 sqft added for entry and
exit), plus a junior ADU, plus a new detached ADU
of up to 800 sqft — up to two ADUs and a JADU on one lot
(Gov. Code § 66323(a)(1)–(2); HCD ADU Handbook,
March 2026, p. 17). A larger Class 2 ADU is the alternative path
when you want more than 800 sqft.
Multifamily lot — existing building.
Conversion ADUs in non-livable space — at least one, up to
25% of the existing units — plus up to eight
detached ADUs, capped at the number of existing units (Gov. Code
§ 66323(a)(3)–(4)). With a proposed multifamily
building, up to two detached ADUs.
One exception. A parcel created by an SB 9 urban
lot split gets no ADU or JADU at all (§ 9-2.4509; Gov. Code
§ 66499.41(g)) — see the state-law section below.
Size limits
A Class 2 ADU may reach 850 sqft for a studio or
one-bedroom and 1,000 sqft for two or more bedrooms
— the state floors in Gov. Code § 66321(b)(2), adopted as
the local caps. An attached ADU on a lot with an existing primary
home is also held to 50% of the primary’s floor area, but no
percentage, front-setback, or lot-coverage rule may force a unit
below 800 sqft — the code says so expressly,
tracking Gov. Code § 66321(b)(3). A conversion of existing space
has no square-foot cap (Gov. Code § 66323(a)(1)), and a junior
ADU tops out at 500 sqft inside the home (Gov. Code
§ 66313(d)).
The Melrose
— 800 sqft, 2 BR / 2 BA on one level. Sized to the exact
envelope Artesia’s code protects outright — no
coverage rule can shrink it.
Setbacks
Side and rear setbacks are 4 feet — the
state-law ceiling on what a city may require (Gov. Code
§ 66314(d)(7)). No setback applies to a conversion or an
in-kind, in-place rebuild of an existing structure. The front setback
is 25 feet, but it may never be applied so as to force the unit below
800 sqft. On Artesia’s compact lots the practical move is to
place the unit across the rear of the parcel and let the 4-foot
envelope do the work.
Maximum height — single story by design
A detached ADU is 16 feet, measured from existing
legal grade (or the lowest floor) to the roof peak — matching
the state floor in
Gov. Code § 66321(b)(4)(A). Within one-half mile of a major
transit stop or high-quality transit corridor that rises to
18 feet, with up to 2 more feet to match the
primary’s roof pitch (20 feet maximum); a lot with a multistory
multifamily building also gets 18 feet (Gov. Code
§ 66321(b)(4)(B)–(C)). A Class 2 detached ADU is limited
to one story. An attached ADU may reach the lesser
of 25 feet or the zone’s height limit, up to two stories
(Gov. Code § 66321(b)(4)(D)). For product fit, that makes
Artesia a single-story detached market: our
two-story Signature Homes — the Fairfax, Venice, and Culver
— are detached designs that need roughly 25 feet of standalone
envelope, and we do not sell them as attached units, so the right
move on an Artesia lot is one of our six single-story models.
Parking
The requirement is one space per ADU or one per bedroom,
whichever is less — and the space may sit in setback
areas or as tandem parking on an existing driveway. It is waived
entirely when the lot is within one-half mile of public transit, in
an architecturally or historically significant district, when the ADU
is part of the primary home or an existing accessory structure, when
on-street permit parking is not offered to the ADU occupant, when a
car-share vehicle is within one block, or when the ADU application
comes in with a new primary dwelling — the Gov. Code
§ 66322 framework, codified locally. When a garage, carport, or
covered space is demolished or converted for an ADU, no
replacement parking may be required (Gov. Code
§ 66314(d)(11)). A junior ADU never requires parking (Gov. Code
§ 66334(a)).
Lot coverage
Lot coverage for a Class 2 ADU is capped at 50%, but the cap yields
to the 800-sqft protection: no coverage, open-space, or floor-area
rule may force an ADU below 800 sqft (Gov. Code
§ 66321(b)(3)). On a typical Artesia parcel that means an
800-sqft, 16-foot unit at 4-foot setbacks is approvable as a matter
of right — the question is placement, not permission.
The Wilshire
— 400 sqft studio. On Artesia’s tightest lots, the
smallest footprint in the lineup keeps the yard — and clears
the coverage math with room to spare.
Owner-occupancy
Artesia imposes no owner-occupancy requirement for an
ADU, consistent with Gov. Code § 66315, which bars such
a mandate statewide. For a junior ADU, the code already carries the
current state rule: owner-occupancy is required only when the
JADU shares sanitation facilities — a bathroom —
with the primary dwelling, with an exception for government,
land-trust, and housing-organization owners. That is the AB 1154
standard, effective January 1, 2026 (Gov. Code § 66333(b)), and
Artesia is one of the few cities whose ordinance already states it. A
JADU still records a deed restriction covering the size limit and the
bar on separate sale.
Impact fees and utilities
No development impact fee applies to a junior ADU or an ADU under
750 sqft; above that, fees are charged
proportionally to the primary dwelling’s size (§ 9-2.4507;
Gov. Code § 66311.5(c)). An ADU under 500 sqft is also exempt
from school fees. A conversion ADU or JADU does not need a separate
utility connection (except with a brand-new home); a new-construction
ADU does, with the connection charge priced to the burden the unit
actually adds. Fire sprinklers are required only if the primary home
has them — an ADU never triggers a sprinkler retrofit of the
main house (Gov. Code § 66314(d)(12)).
Permitting timeline
Every ADU takes a ministerial ADU permit plus a building permit
(§ 9-2.4504) — no public hearing, no discretionary review,
no neighbor sign-off (Gov. Code § 66317). The code puts the
current state clocks in local print: a written completeness
determination within 15 business days, cure rights
and an appeal path, and a decision on a complete application within
60 days — miss the clock and the application
is deemed approved. A denial must come with a written list of
defects.
Artesia’s two-track code: Class 1 and Class 2
Article 45 sorts every ADU into one of two tracks, and knowing which
track your project rides tells you which standards apply. This
structure is grounded in Artesia Municipal Code Article 45 and
Gov. Code §§ 66314–66323.
Class 1 — the statewide by-right units.
These are the units Gov. Code § 66323 guarantees everywhere:
the conversion ADU (within the home or an accessory structure), the
junior ADU, the new detached ADU of up to 800 sqft at 4-foot
setbacks, and the multifamily conversion and detached allowances.
Class 1 units are approved on the state standards — the
City’s Class 2 design rules do not attach.
Class 2 — the ordinance units. Everything
else — typically a detached unit larger than 800 sqft, up to
the 850 / 1,000 sqft caps — rides the Class 2 track under
§§ 9-2.4505 and 9-2.4506, which adds Artesia’s
design standards in exchange for the extra size.
The Class 2 design standards are objective — they cannot become
a discretionary review — but they are real, and they shape the
drawings:
Match the main house. Exterior materials and
colors must match the primary dwelling, and the roof must match its
dominant slope.
Privacy by design. Exterior lighting is
down-lights only, and no window or door may have a direct line of
sight into an adjoining home — screen it or move it.
Livability minimums. A minimum 10-foot interior
width and 7-foot wall height, with an independent exterior
entrance.
Near a historic property. An ADU within 600 feet
of a California Register property may not be visible from the
public right-of-way.
This is where a pre-engineered plan earns its keep. Our Signature
Homes ship with elevation and material options, so matching the
primary’s stucco, siding, or roof slope is a drawing revision
— not a redesign — and window placement is checked
against the neighbors’ sight lines before the set goes in.
How state law and Article 45 line up
On most pages in this series, this section is a list of local rules
state law overrides. Artesia is different: because the City has kept
Article 45 current, the local text and the Government Code agree
almost everywhere. What matters here is knowing which guarantees are
state-law floors — they hold no matter what a future local
amendment says (Gov. Code § 66316) — and where the code
exercises the discretion state law leaves to cities.
The floors that always hold — an 800-sqft,
16-foot ADU at 4-foot setbacks must be approved regardless of
coverage or floor-area limits (Gov. Code § 66321(b)(3)); the
Class 1 stack of conversion ADU + JADU + detached ADU is guaranteed
(Gov. Code § 66323); no ADU owner-occupancy (Gov. Code
§ 66315); no replacement parking for a converted garage
(Gov. Code § 66314(d)(11)); and the 60-day deemed-approved
clock (Gov. Code § 66317).
Recent amendments, already in local print —
the AB 1154 shared-sanitation JADU rule (Gov. Code
§ 66333(b)), the SB 543 15-business-day completeness review
(Gov. Code § 66317(a)(2)(A)), the SB 1211 multifamily detached
allowance of up to eight units (Gov. Code § 66323), and the
AB 2533 legalization pathway for pre-2020 units (Gov. Code
§ 66332; § 9-2.4508).
Where local discretion shows — state law
permits, and Artesia has chosen: a 30-day minimum rental term
(Gov. Code § 66323(e)), no AB 1033 opt-in for separate sale
(Gov. Code §§ 66341–66342), the Class 2 one-story
detached limit and design standards, and the SB 9 lot-split
exclusion — no ADU or JADU on a parcel created through a
Gov. Code § 66499.41 urban lot split (§ 9-2.4509;
§ 66499.41(g)).
Permitting your ADU, step by step
Artesia ADUs run as a ministerial ADU permit plus a building permit
under Artesia Municipal Code § 9-2.4504 and Gov. Code
§ 66317. With a pre-engineered Signature plan, the permit step
runs in weeks, not months. Once your plans are permitted, the build
itself — performed by an independent licensed general
contractor under separate contract with you — typically runs
six to nine months for a project this size.
Signature plan preparation — about two weeks.
We adapt the pre-engineered single-story plan to your lot:
placement, the 4-foot setbacks, the 16-foot envelope, the
transit-distance parking check, the Class 2 material-match and
sight-line standards where they apply, and utility routing.
Completeness check — 15 business days. The
City must determine in writing whether the application is complete,
with cure rights and an appeal path if it claims otherwise
(§ 9-2.4504; Gov. Code § 66317(a)(2)(A)).
Ministerial review — the 60-day clock. The
City must approve or deny a complete application within 60 days,
with no hearing; miss the clock and the application is deemed
approved, and a denial requires a written defect list. Because a
Signature plan is a conformance review rather than a from-scratch
evaluation, plan check typically clears in weeks. A custom design
is slower — bespoke design time plus a longer plan check,
because the reviewer is seeing the drawings for the first time.
Building plan check and fees. Artesia’s
building and safety function runs on the Los Angeles County
contract-city fee schedule (effective July 1, 2025), so
building-permit and plan-check fees are valuation-based; planning
fees follow the City’s posted fee schedule. If a garage comes
down for the ADU, the demolition permit issues concurrently
(§ 9-2.4504). Impact fees are exempt under 750 sqft
(§ 9-2.4507; Gov. Code § 66311.5(c)).
Construction — four to six months. By model
size: under 600 sqft, four months; 600–800 sqft, five months;
over 800 sqft, six months. Construction is the homeowner’s to
arrange: build it yourself, bring your own licensed contractor, or
build with one of our vetted construction partners. The schedule is
set in writing in your contract with the independent licensed
general contractor who performs the build.
Signature Homes that fit Artesia lots
A detached ADU in Artesia is a single-story project — so here are three single-story Signature Homes that span the range: the compact studio built for the city's tightest lots, the most popular two-bedroom at the protected 800-sqft envelope, and the full three-bedroom flagship at the 1,000-sqft Class 2 cap. Transparent pricing. Architect-designed. Drawn to Article 45's match-the-house design standards.
Single-story detached homes and garage conversions across southeast LA County and greater Los Angeles — the project types Artesia's one-story detached envelope and compact lots make the natural fit.
Our Signature Home plans are fixed-price — architectural design
and full permit processing included — the same whether the lot
is in Artesia, Cerritos, or the Westside. Construction is separate:
the figures below are estimates to build, not a CALI price. For an
Artesia lot, the single-story models are the ones the one-story
detached envelope makes buildable — from the 400-sqft studio to
the three-bedroom single-level flagship.
The Sunset
— 480 sqft, 1 BR / 1 BA. Plans $7,490 fixed;
est. $200K–$215K to build. Under 750 sqft, it rides the
impact-fee exemption — a fee line that simply disappears.
Fixed-price plans. The plan fee is locked — design and full
permit processing included — whatever your lot throws at it.
The build figures above are estimates from an independent licensed
general contractor, not a CALI price: once your plans are permitted,
you build it yourself, bring your own licensed contractor, or build
with one of our vetted construction partners. We can hold the plan
price because our Signature Homes were engineered to clear the
Government Code on paper.
What is not in that number: Artesia’s planning-review fees and
the valuation-based building-permit and plan-check fees on the
County-administered schedule, plus utility-connection charges where a
new-construction ADU needs its own connection. Impact fees are exempt
for an ADU under 750 sqft and proportional above (Gov. Code
§ 66311.5). Under 500 sqft, school fees drop off too
(§ 9-2.4507). Your
Backyard Review includes a line-item
estimate of those pass-through costs for your specific lot.
Plan an Artesia ADU around 30-day-or-longer tenancy. Article 45 sets
a minimum rental term of 30 days (§ 9-2.4505) — the floor
state law lets a city adopt (Gov. Code § 66323(e)) — so
nightly and weekly short-term rental is out. The compliant model is a
long-term lease or a furnished mid-term rental: corporate,
traveling-medical, or relocation tenants on 30-day-plus terms.
For a sense of the market, the federal Fair Market Rent benchmark for
the Los Angeles–Long Beach–Glendale area — which
includes Artesia — runs about $2,328 for a
one-bedroom, $2,903 for a two-bedroom, and $3,681 for a
three-bedroom (HUD Fair Market Rents, FY 2026, effective
May 21, 2026). A new, detached, never-lived-in ADU typically rents at
or above those figures, because FMR is a market-wide midpoint that
includes older stock. Artesia’s rental demand has a distinctive
engine. The Pioneer Boulevard commercial district draws workers,
visitors, and family ties from across the region. And the
city’s multigenerational households make an ADU as likely to
house a parent or an adult child as a tenant. The Melrose (800 sqft,
two bedrooms) and the Lincoln (1,000 sqft, three bedrooms) open up
the upper end of that range.
Why this small city is a strong ADU market
Artesia is one of the smallest cities in LA County — about 1.6
square miles and roughly 16,000 residents — and nearly all of
its residential land is established single-family streets wrapped
around the Pioneer Boulevard district. Small city, compact lots:
which is exactly where a pre-engineered single-story plan shines. An
800-sqft unit at 4-foot setbacks is protected by law on even a modest
parcel, and the smaller Signature Homes — the 400-sqft Wilshire
and 480-sqft Sunset — are drawn for precisely this lot profile.
The regulatory picture is as friendly as it gets in the region. The
City has kept Article 45 current through January 2026. The full
state units stack, the one-space-or-less parking rule with broad
waivers, the 15-business-day completeness clock, and the pre-2020
legalization pathway are all in local print — so the process
is predictable end to end. Add the multigenerational household
patterns that define the city and a steady rental market anchored by
the commercial district, and an ADU here works equally well as
family housing or as income property.
Your ADU questions, answered
The questions Artesia homeowners actually ask before they start
— with citations to Artesia Municipal Code Article 45 and
Gov. Code §§ 66310–66342.
How many ADUs can I build on an Artesia single-family lot?
Up to two ADUs plus a junior ADU. Artesia’s ordinance
codifies the state stack directly as its Class 1 track: one ADU
converted from existing space of the home or an accessory
structure (with up to 150 sqft added for entry and exit), plus
one junior ADU of up to 500 sqft inside the home, plus one new
detached ADU of up to 800 sqft at 4-foot setbacks (Artesia
Municipal Code art. 45; Gov. Code
§ 66323(a)(1)–(2); HCD ADU Handbook, March 2026,
p. 17). On a lot with an existing multifamily building, the code
allows conversion ADUs in non-livable space — at least
one, up to 25% of the existing units — plus up to eight
detached ADUs, capped at the number of existing units (Gov. Code
§ 66323(a)(3)–(4)).
How big can an ADU be in Artesia?
Under Artesia Municipal Code § 9-2.4506, a Class 2 ADU may
reach 850 sqft for a studio or one-bedroom and 1,000 sqft for two
or more bedrooms — matching the state floors in Gov. Code
§ 66321(b)(2). An attached ADU on a lot with an existing
primary home is also limited to 50% of the primary’s floor
area, but no percentage, front-setback, or coverage rule may
force the unit below 800 sqft (Gov. Code § 66321(b)(3)). A
conversion of existing space has no square-foot cap (Gov. Code
§ 66323(a)(1)), and a junior ADU is capped at 500 sqft
inside the home (Gov. Code § 66313(d)).
How tall can an ADU be — and can it be two stories?
Per Artesia Municipal Code § 9-2.4505(b), a detached ADU is
16 feet, measured from existing legal grade (or the lowest
floor) to the roof peak (Gov. Code § 66321(b)(4)(A)). That rises to 18 feet within
one-half mile of a major transit stop or high-quality transit
corridor — with up to 2 more feet to match the
primary’s roof pitch, to a 20-foot maximum — and to
18 feet on a lot with a multistory multifamily building. A
Class 2 detached ADU is limited to one story
(§ 9-2.4506), so a standalone two-story backyard unit is
not on the menu; an attached ADU may reach the lesser of 25 feet
or the zone’s height limit, up to two stories (Gov. Code
§ 66321(b)(4)(D)).
Do I need parking for an ADU in Artesia?
At most one space. Artesia Municipal Code § 9-2.4506
requires one space per ADU or one per bedroom, whichever is less,
and allows it in setback areas or as tandem parking. It is waived
entirely near public transit, in a historic district, for an ADU
within the primary or an accessory structure, where on-street
permit parking is not offered to the occupant, within a block of
car-share, or when the application accompanies a new primary
dwelling (Gov. Code § 66322). No replacement parking may be
required when a garage is demolished or converted for the ADU
(Gov. Code § 66314(d)(11)), and a junior ADU never requires
parking (Gov. Code § 66334(a)).
Do I have to live on the property?
Not for an ADU. Artesia Municipal Code § 9-2.4505 imposes no
owner-occupancy requirement for ADUs, consistent with Gov. Code
§ 66315. For a junior ADU, the code already carries the
current state rule: owner-occupancy applies only when the JADU
shares a bathroom with the primary dwelling, with an exception
for government, land-trust, and housing-organization owners
— the AB 1154 standard effective January 1, 2026 (Gov. Code
§ 66333(b)). A JADU with its own dedicated bathroom carries
no owner-occupancy mandate.
Can I legalize an unpermitted ADU in Artesia?
Usually, yes — if it was built before 2020. Artesia
Municipal Code § 9-2.4508 codifies the AB 2533 pathway: an
ADU or junior ADU constructed before January 1, 2020 may be
legalized, and the City may deny the application only on written
findings that the unit is substandard under Health & Safety
Code § 17920.3 (Gov. Code § 66332). That is a
health-and-safety test, not a zoning test — the unit does
not have to meet today’s setback or size standards to come
into the system.
Can an Artesia ADU be sold separately or rented short-term?
No to both. Artesia Municipal Code § 9-2.4505 bars renting
an ADU for less than 30 days and bars conveying the ADU
separately from the primary residence except as provided in
Gov. Code § 66341 — and Artesia has not adopted the
local AB 1033 opt-in ordinance that section requires (Gov. Code
§§ 66341–66342). Among LA-area cities, Santa
Monica (SMMC § 9.31.026) and Culver City (CCMC
§ 17.400.096) have opted in; Artesia has not. The compliant
rental model is a long-term lease or a furnished 30-day-plus
mid-term rental.
Can I add an ADU to a lot created by an SB 9 lot split?
No. Artesia Municipal Code § 9-2.4509 provides that no ADU
or junior ADU is permitted on a parcel created through an urban
lot split under Gov. Code § 66499.41 — consistent with
§ 66499.41(g), which lets a city deny ADUs on lot-split
parcels. This affects only parcels created by an SB 9 split; a
standard, existing single-family lot keeps the full Class 1
stack: a conversion ADU, a JADU, and a new detached ADU of up to
800 sqft (Gov. Code § 66323).
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