Can Your HOA Block Your ADU in California? The Carlsbad Ruling

Can your HOA block your ADU in California? For years, California homeowners assumed the answer was no — that state law protected their right to build accessory dwelling units despite what their HOA's governing documents said. A San Diego Superior Court ruling in April 2026 complicated that assumption in a significant way: the court held that California's main ADU protection statute does not apply to condominium owners or homeowners in multi-use zoned developments.

If you own a single-family home in a planned development (a standard subdivision HOA), Civil Code §4751 still protects you from blanket HOA ADU bans. But if you own a condo — or your community sits on multi-use zoned land — this ruling means your HOA may legally be able to block your ADU under its CC&Rs, regardless of what state ADU law says.

This guide explains exactly what the court ruled, who is still protected, who is not, and what steps to take whether you are a single-family homeowner or a condo owner facing HOA pushback on an ADU. For broader California HOA law context, see our California HOA laws and rights guide and our California HOA fine limits 2026 overview.

In April 2026, San Diego Superior Court Judge Victor Torres issued a ruling in a case involving Adam Hardesty, a homeowner at the Mystic Point condominium development in Carlsbad, California, and the Mystic Point Homeowners Association.

Hardesty wanted to convert his garage into a small rental unit — an accessory dwelling unit — to generate additional income. The HOA's CC&Rs prohibited it. Hardesty argued that California's 2019 ADU protection law — codified at Civil Code §4751 via Assembly Bill 670 — rendered that CC&R prohibition void and unenforceable. His position: state law overrides any HOA restriction that "effectively prohibits or unreasonably restricts" ADU construction.

The court sided with the HOA on two separate grounds:

1. Condo vs. planned development: Civil Code §4751 applies to planned developments — a specific legal category under Davis-Stirling. A condominium is a different legal structure. Judge Torres found that if the Legislature had intended to include condominiums, it "could have easily" written the statute to say so. Because it did not, condos fall outside §4751's protection.
2. Zoning classification: Section 4751 requires that the property be "zoned for single-family residential use." Mystic Point's zoning permits townhomes and small condo developments alongside single-family residences — making it multi-use zoning, not exclusively single-family. Applying §4751 to multi-use zoned property would be, in the court's words, "contrary to the legislative intent."

Hardesty and his wife had already spent over $100,000 combined in construction and legal fees by the time of the ruling. He expressed a desire to appeal the decision but acknowledged financial constraints. Judge Torres himself appeared to invite appellate review, stating from the bench: "I'm sure I'll hear more education from the Court of Appeal at some point."

The Carlsbad ruling did not eliminate California's ADU protections — it drew a line around them. Understanding which side of that line you stand on determines your entire strategy.

Still Protected: Single-Family Homeowners in Planned Developments

If you own a detached single-family home in a subdivision governed by an HOA — the classic "planned development" under California law — Civil Code §4751 still applies to you. Your HOA cannot maintain a blanket CC&R ban on ADU construction. Any restriction that "effectively prohibits or unreasonably restricts" your right to build an ADU is void and unenforceable under state law, regardless of what your governing documents say.

This protection also extends to Junior ADUs (JADUs) — small units created within the existing structure of a single-family home. Civil Code §714.3 provides additional protections in the same vein, covering both ADUs and JADUs on eligible lots.

What your HOA can still enforce even if you are protected:

• Reasonable design conditions (the ADU must match the home's architectural style)
• Height and setback requirements consistent with local zoning
• Aesthetic restrictions (paint colors, roofing materials, landscaping around the unit)
• Rules requiring advance HOA approval for exterior modifications

What your HOA cannot do: refuse to grant approval entirely, impose conditions so burdensome they effectively make ADU construction impossible, or charge fees beyond what California law authorizes. See our architectural violation defense guide for strategies when an HOA denies an exterior modification request.

Not Protected After This Ruling: Condo Owners and Multi-Use Zoned Communities

If you own a condominium unit — meaning you own airspace within a building, not a lot of land — the Carlsbad court held that Civil Code §4751 does not protect you. Your HOA's CC&R prohibition may be fully enforceable.

Separately, even if your home is a detached structure, if your community is not zoned exclusively for single-family residential use, §4751's zoning requirement may not be met — leaving you in a similar position to the Carlsbad condo owner.

California's main HOA ADU protection statute — Civil Code §4751 — was enacted via Assembly Bill 670 in 2019 (effective January 1, 2020). Understanding its exact text helps clarify who it covers.

Section 4751 provides that a provision of a governing document of a common interest development that effectively prohibits or unreasonably restricts the construction or use of an ADU or JADU on a lot zoned for single-family residential use within a planned development is void and unenforceable.

The two limiting phrases are critical:

• "Planned development": Under California's Davis-Stirling Common Interest Development Act, a "planned development" is a specific type of common interest development where owners hold title to their individual lot plus an undivided interest in common areas. A condominium, by contrast, involves ownership of airspace within a building — a legally distinct structure. The statute's use of "planned development" rather than the broader term "common interest development" is the hook on which the Carlsbad court hung its ruling against the condo owner.
• "Zoned for single-family residential use": The ADU protection applies where the lot is in a zone designated exclusively for single-family homes. Mixed-use zoning — which permits multiple housing types including condos and townhomes alongside single-family homes — may not satisfy this requirement, as the Carlsbad court found with Mystic Point's zoning classification.

Companion statutes also provide support for single-family homeowners:

• Civil Code §714.3: Renders deed restrictions banning or unreasonably limiting ADUs and JADUs void, broadly applicable beyond the planned development/condo distinction in §4751.
• Government Code §65852.2: Establishes the state ADU framework that supersedes local zoning restrictions — but this statute governs local government restrictions, not HOA CC&Rs directly.

For a full picture of California HOA law changes including the AB 130 fine cap, see our California HOA law changes 2026 guide.

The Carlsbad ruling is a setback for California condo owners who hoped state ADU law would override their HOA restrictions. But it is not a complete dead end. Several avenues remain worth exploring.

1. Distinguish a Blanket Ban from Reasonable Restrictions

Even outside §4751's protection, an outright blanket prohibition on ADUs may face different challenges than a set of reasonable design conditions. Review your CC&Rs carefully: does the provision prohibit ADUs entirely, or does it impose conditions (size limits, design requirements, approval processes)? Reasonable conditions are more likely to be enforced; blanket prohibitions may be challenged on other grounds depending on the specific CC&R language and context.

2. Check Whether You Actually Own Land

Some California communities are described informally as "condos" but are legally structured as planned developments — meaning individual owners hold title to their lot. If your deed conveys ownership of land (not just airspace), your community may actually be a planned development governed by §4751. A title review or consultation with a real estate attorney can clarify this.

3. Review CC&Rs for a Variance or Amendment Process

Most HOA governing documents include a process for requesting a variance (a one-time exception to the rules) or for amending the CC&Rs. If ADU construction matters to you long-term, organizing with neighbors who share your interest to pursue a CC&R amendment may be more productive than litigation.

4. Look for Procedural Defects in Any Enforcement Action

Even if the underlying ADU restriction is enforceable, your HOA must still follow proper procedures when enforcing it — written notice, a cure period, and a right to a hearing before any fine is imposed. See our HOA due process violations guide and our HOA hearing rights guide for the specific procedures your HOA must follow under Civil Code §5855.

5. Watch for a Legislative Fix or Appellate Ruling

The Carlsbad decision may prompt California lawmakers to clarify §4751 to explicitly include condominiums, or an appellate court could reach a different conclusion if the case is appealed. Note: Whether legislation or an appeal will occur, and what outcome either would produce, is speculative at this time. Monitor California legislative updates if you are a condo owner with ADU plans.

Whether you are planning an ADU or already facing HOA opposition, follow these steps to determine where you stand under California law.

1. Identify your community type: Are you in a planned development (you own a lot) or a condominium (you own airspace)? Check your deed. If it conveys land, you may be in a planned development. If it describes a unit number and undivided interest in common areas without land ownership, you are likely in a condo.
2. Verify your zoning: Look up your parcel on your city or county's zoning map. Is it zoned exclusively for single-family residential use? Or does the zoning permit multiple housing types? Single-family zoning + planned development = §4751 likely protects you. Multi-use zoning or condo = this ruling applies against you.
3. Locate the exact CC&R provision: Find the specific section of your Declaration or Rules and Regulations that the HOA is relying on. Read the full definition — does it explicitly prohibit ADUs by name, or does it prohibit "exterior modifications" or "additional structures" generally? Ambiguity in the CC&R language can be argued in your favor.
4. If you are a single-family planned-development owner: Send a written response citing Civil Code §4751 and asserting that any provision of your governing documents that effectively prohibits your ADU is void and unenforceable under state law. Request written confirmation that the HOA will not enforce the restriction or impose fines. Keep all correspondence for your records.
5. If you are a condo owner: Document every HOA communication about the ADU in writing. Check whether the HOA followed proper enforcement procedures (written notice, cure period, hearing rights under Civil Code §5855). Even if the substantive restriction is enforceable, procedural failures can invalidate any fine. Review our homeowner rights guide for your full list of California procedural protections.
6. Consult a California real estate attorney before spending money on construction: Given the Carlsbad ruling, condo owners in particular should obtain a legal opinion before investing in ADU construction that the HOA may successfully block in court.