Local zoning · Avalon
Avalon — Historic Preservation
Historic Preservation under the Avalon local zoning and planning code, with the controlling citations.
Last reviewed: July 3, 2026
Overview
Avalon’s zoning code does not establish a full standalone local historic‑preservation chapter or a local landmark designation procedure in the materials retrieved. Instead, historic status is referenced as a limiting or qualifying factor within several ordinance areas: accessory dwelling units (ADUs), SB 9 / two‑unit projects (urban lot splits / two‑unit ministerial approvals), sign and design compatibility rules, and site/permit review requirements. Read this page as a code‑focused, ordinance‑only synthesis — for design guidance or landmark nomination processes, Verify with the jurisdiction. See the city's zoning overview and related topics: Avalon Zoning, Avalon Development Standards, Avalon Design Review, Avalon Parking, Avalon Overlay Districts, Avalon ADUs, and the state building code (Title 24) for building‑code interplay.
What the Avalon ordinance actually says (top takeaways)
- The city treats whether a property is a historic property or is within a historic district as a disqualifier for certain by‑right/ministerial approvals (notably SB 9 two‑unit/urban lot split approvals) — the lot must not be designated historic or be on the State Historic Resources Inventory. See § 9-5.701 (e)(4).
- The local ADU rules include an explicit parking exemption when an ADU is located within an architecturally and historically significant historic district, i.e., the ADU parking requirement can be waived for properties in such districts. See § 9-5.606(g)(2)(b).
- Routine exterior changes in any zoning district that alter building exteriors require permits and site/Commission review; historic sensitivity is therefore evaluated as part of the normal permitting and design/site‑plan review process. See § 9-8.207 (permits required for exterior structural changes) and site plan procedures.
- Sign regulation language emphasizes compatibility with "architectural style" and elements that are "historically appropriate" — the sign chapter is explicitly oriented toward preserving the city's visual character in design review/permit decisions. See § 9-7.701.
Note: the Avalon ordinance text in the provided materials uses the terms and zone labels below (for district‑level guidance).
District‑by‑district breakdown (how historic considerations show up)
LD (Low Density Residential and Low Intensity Recreational)
- Purpose: Manage development on the island’s slopes and preserve scenic and cultural resources. See § 9-5.201.
- Typical permitted uses: detached dwellings, low‑intensity recreation, preservation of areas with "historical and cultural value." See § 9-5.202(b).
- Historic code relevance:
- SB 9 / two‑unit projects requiring ministerial approval are limited to lots in the LD zone, but the ordinance explicitly disqualifies lots that are historic or inside a historic district (the lot "must not be a historic property or within a historic district" for the two‑unit approval). See § 9-5.701(e)(2) and § 9-5.701(e)(4).
- Practical implication: If your LD parcel appears on the State Historic Resources Inventory or carries a local/county landmark designation, SB 9 two‑unit ministerial rights are unavailable. Verify with the City.
HD (Multiple Residential — High Density) and the HD "designated area"
- Purpose: Provide higher density residential development; a mapped portion of the HD zone (Appendix A area bounded by Clemente, Third, Tremont, Sumner, Beacon) has special development standards for small historic‑era lots. See § 9-5.406.
- Typical permitted uses: multifamily residential per § 9-5.405/406.
- Key dimensional standards (designated HD area): smaller lot rules, tight sideyard setbacks (three feet typical; 12‑inch minimum on one side in certain cases), special height and bulk rules for small lots — see § 9-5.406(d) and related subsections for exact setback and fire department conditions. § 9-5.406.
- Historic code relevance:
- The HD designated area rules are aimed at small, older lot patterns (many of which are historically developed). If your lot falls inside the mapped HD subarea, expect stricter site plan scrutiny and the special setbacks/height/bulk rules to apply. See § 9-5.406.
Commercial / Special Commercial / Resort Recreation zones (signage & design)
- Purpose: Commercial activity with controls to maintain visual character.
- Historic code relevance:
- The sign regulations require compatibility with architectural style and historically appropriate appearance; internally lit signs are limited by zone and proximity to residential property. See § 9-7.701 — § 9-7.703.
- Any exterior sign, and many changes to building faces, require a planning permit per § 9-7.702 and § 9-8.207.
Zones referenced elsewhere (ADU regime applies across residential zones)
- The ADU chapter (§ 9-5.601–9-5.609, in particular § 9-5.606) applies citywide to qualifying ADUs. The ordinance includes an express exception to ADU parking in the event the ADU is located "within an architecturally and historically significant historic district." See § 9-5.606(g)(2)(b).
Quick standards & decision table
| Topic / trigger | What the code requires or allows | Code reference |
|---|---|---|
| SB 9 / Two‑unit ministerial approval — historic exclusion | Lot must not be a historic property or in a historic district or on the State Historic Resources Inventory (disqualifies ministerial SB 9 on historic parcels). | § 9-5.701(e)(4) |
| ADU — parking exception for historic district | Off‑street parking requirement for an ADU is waived if the ADU is located within an "architecturally and historically significant historic district." | § 9-5.606(g)(2)(b) |
| ADU — size / FAR / setbacks (important limits) | ADU max sizes, FAR 45%, lot coverage and setbacks rules are in § 9-5.606; see three‑foot side/rear setbacks and other dimensional rules. | § 9-5.606 |
| Permits for exterior alterations | Any exterior structural change or alteration in any district requires Planning Commission/Building Department permits (site plan/review) — historic character reviewed through those permits. | § 9-8.207 |
| Signs / visual compatibility | Signs must be compatible with architectural style and "historically appropriate" appearance. Planning permits required. | § 9-7.701, § 9-7.702 |
| HD designated area (small historic lot standards) | Special setbacks and tiny‑lot rules apply; zero‑foot sideyard allowed only by recorded agreement or when both adjoining owners agree. | § 9-5.406(d) |
Checklist (what an applicant proposing exterior work, an ADU, or an SB9 split must satisfy)
- Confirm whether the property is listed on the State Historic Resources Inventory or designated by ordinance as a City/county landmark. If yes, ministerial SB 9 approvals are not permitted. (Verify with the City) — § 9-5.701(e)(4).
- For ADU projects, document whether the lot sits in an "architecturally and historically significant historic district" to determine parking requirements — § 9-5.606(g)(2)(b).
- Prepare full site plans and elevations for any exterior alteration; obtain required Planning Commission or building permits per § 9-8.207.
- If the property lies in the HD designated area, confirm minimum setbacks, height limits, and any recorded agreements affecting zero‑setback conditions — § 9-5.406.
- For signage or changes that affect the street face, ensure sign design materials are consistent with historically appropriate character per § 9-7.701 and obtain permits § 9-7.702.
- If seeking a discretionary alternative for a nonconforming ADU, be prepared to apply for a Conditional Use Permit as allowed under § 9-5.609.
Risks & Ambiguities
| Issue | Why it matters | What to verify |
|---|---|---|
| Local landmark designation process | The code excerpts contain references to "designated by ordinance as a City or county landmark" but there is no procedural chapter for nominations, hearings, or a local register in the retrieved files. | Verify with the City whether a separate historic‑preservation ordinance or administrative procedure exists (not found in retrieved materials). Not found in retrieved materials. |
| Which mapped districts qualify as "architecturally and historically significant historic district" | ADU parking waiver depends on this phrase, but the code does not include a list or map of qualified historic districts in the retrieved text. | Ask Planning for the City's official map/list and any criteria used to declare a district "architecturally and historically significant." Not found in retrieved materials. |
| SB 9 applicability to parcels with historic features | SB 9 ministerial path is precluded for historic parcels, but some historic buildings might still qualify for other permit paths. | If a parcel is historic, confirm appeal/discretionary options and whether a conditional use or design review path exists. Verify with the jurisdiction. |
| Interaction with state historic/CHBC relief | The local code references permitting and building standards but does not state how the city administers the California Historical Building Code (CHBC) for qualified historic buildings. | If work involves a qualified historic building, check Building Department policy on using the CHBC (state rules apply). See CHBC (state) guidance. |
| What "historic" means for code exclusions | The code uses "historic property" and references the State Historic Resources Inventory, but local designation criteria are not given. | Confirm whether "historic" means state‑listed only, locally designated, or both. Verify with the Planning Department. |
Plain‑English summary
Avalon’s zoning ordinance does not operate a full local preservation code in the retrieved materials; instead it treats historic status as a limiting condition in specific programs: if a lot is state‑listed or designated as a landmark it cannot use the ministerial SB 9 two‑unit (urban lot split) path (§ 9-5.701(e)(4)), and properties inside an "architecturally and historically significant historic district" may qualify for ADU parking exemptions (§ 9-5.606(g)(2)(b)). General exterior changes still require planning/building permits and design/site‑plan review, where historic compatibility will be considered (§ 9-8.207, § 9-7.701).
Source References
- Avalon Municipal Code, Article 7 — SB 9 Two‑Unit Projects: ministerial requirements including the historic exclusion — § 9-5.701(e)(4).
- Avalon Municipal Code, ADU provisions and parking exception for historic districts — § 9-5.606(g)(2)(b).
- Avalon Municipal Code, Permits required for exterior work / site plan review — § 9-8.207.
- Avalon Municipal Code, Signs — findings/intent about historically appropriate sign compatibility — § 9-7.701, § 9-7.702.
- Avalon Municipal Code, HD zone designated small‑lot standards — § 9-5.406.
- Avalon Municipal Code, ADU nonconforming rules & discretionary approval references — § 9-5.608–9-5.609.
- 2025 California Historical Building Code (for state CHBC guidance where local historic building repairs/rehab are involved).
(Also consult the local pages used in this guide when preparing an application: Avalon Zoning, Avalon Development Standards, Avalon Design Review, Avalon Parking, Avalon Overlay Districts, Avalon ADUs, and the California Building Standards Code (Title 24).)
Sources
Retrieved passages
- Avalon Zoning Code (§ 66411.7) Medium relevance
- CBC § 66411.7 (§ 66411.7) Medium relevance
- Avalon Zoning Code (Chapter 9-5.) Medium relevance
- Avalon Zoning Code (§ 9-15.105.) Medium relevance
- CFC § 606 (Title 4) Medium relevance
- Avalon Zoning Code (§ 9-13.102.) Medium relevance
- Avalon Zoning Code (chapter are) Medium relevance
- Avalon Zoning Code (§ 9-15.106.) Medium relevance
- CBC § 18955 (Section 18955) Medium relevance
- Avalon Zoning Code (§ 9-5.603.) Medium relevance
Cited sections
- Avalon Municipal Code, Article 7 — SB 9 Two‑Unit Projects: ministerial requirements including the historic exclusion — **§ 9-5.701(e)(4)**. (Article 7)
- Avalon Municipal Code, ADU provisions and parking exception for historic districts — **§ 9-5.606(g)(2)(b)**. (§ 9-5.606)
- Avalon Municipal Code, Permits required for exterior work / site plan review — **§ 9-8.207**. (§ 9-8.207)
- Avalon Municipal Code, Signs — findings/intent about historically appropriate sign compatibility — **§ 9-7.701**, **§ 9-7.702**. (§ 9-7.701)
- Avalon Municipal Code, HD zone designated small‑lot standards — **§ 9-5.406**. (§ 9-5.406)
- Avalon Municipal Code, ADU nonconforming rules & discretionary approval references — **§ 9-5.608–9-5.609**. (§ 9-5.608)
- 2025 California Historical Building Code (for state CHBC guidance where local historic building repairs/rehab are involved).
- Avalon_ZoningCode.md
- 2025 California Historical Building Code.md
Frequently asked questions
Can I do an SB 9 two‑unit split on a house that’s on the State Historic Resources Inventory in Avalon?
No. The Avalon SB 9 / two‑unit ministerial provisions disqualify lots that are historic or within a historic district listed on the State Historic Resources Inventory or designated by ordinance as a landmark — the lot "must not be a historic property or within a historic district" for the SB 9 path to apply. See § 9-5.701(e)(4).
If my property is in a historic district, do I still have to provide ADU parking in Avalon?
Possibly not. Avalon’s ADU rules include an explicit parking exception: no ADU parking is required when the ADU is located within an "architecturally and historically significant historic district." See § 9-5.606(g)(2)(b). Confirm whether your district is on the City's official list or map.
Does Avalon have a local process to designate landmarks or historic districts?
Not in the retrieved materials. The zoning excerpts reference "designated by ordinance as a City or county landmark," but a local nomination/landmark procedure or a local register was not found in the provided code excerpts. Not found in retrieved materials — Verify with the Planning Department.
Will I need design review or a site plan if I alter the exterior of a building in a historic area?
Yes — the code requires permits for exterior structural changes and allows site plan/Commission review for such changes; historic character is reviewed within those permit processes. See § 9-8.207 (permits required) and related site plan review rules.
What if my property is in the HD small‑lot designated area — are there different setback rules?
Yes. The HD designated area (the mapped area described in § 9-5.406) has special development standards for lots under 2,200 sq ft, including minimum setbacks (commonly three feet, with special 12‑inch provisions in some cases) and specific height/bulk rules. See § 9-5.406.
Do sign rules in Avalon take historic character into account?
Yes. The sign chapter states that signs should be compatible with architectural style and "historically appropriate" appearance; sign permits are required and the Planning Department will deny signs that are not compatible. See § 9-7.701 and § 9-7.702.
If my building is a "qualified historic building" can I use the California Historical Building Code for repairs?
Potentially; the CHBC (state) provides alternative, performance‑based rules for qualified historic buildings. The local code does not state an explicit CHBC administration policy in the retrieved materials — consult the Building Department and the CHBC guidance. See CHBC materials for state standards.
If an ADU is nonconforming to the ADU objective standards because of historic constraints, is there a path to approval?
Yes. The ordinance allows a discretionary approval route: a nonconforming ADU that cannot meet the objective standards may be considered by the City through a conditional use/other discretionary permit process per § 9-5.609.
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