Eichler Homes in Marin County: Terra Linda, Lucas Valley & Marinwood
Marin County’s Eichler homes are concentrated in three neighborhoods on the north side of San Rafael: Upper Lucas Valley and Marinwood, both in unincorporated county territory, and Terra Linda, inside the City of San Rafael. The Eichler Network describes Upper Lucas Valley as a 538-home neighborhood built in the mid-1960s and Marinwood as an earlier tract from the late 1950s; Terra Linda mixes Eichlers with Alliance homes from the 1950s. Each neighborhood answers to a different set of design rules, so the same remodel can be simple on one street and off the table on another.
This page is the Marin-specific companion to our Bay Area Eichler overview. It compares the three Marin tracts side by side, explains which approvals a project needs in each, and lists what to check before you buy or sell. Neighborhood services, school district and commute details live on our Lucas Valley-Marinwood guide and Terra Linda guide.
Marin’s Eichler neighborhoods at a glance
All three share San Rafael mailing addresses and the 94903 ZIP code area, which is why jurisdiction gets confused. Confirm it for every parcel before you price an addition or a tax line.
| Neighborhood | Jurisdiction | Era | Design controls |
|---|---|---|---|
| Upper Lucas Valley | Unincorporated Marin County | Mid-1960s; 538 homes | County community standards (Marin County Code 22.30.040, R1:BLV zoning) plus Lucas Valley Homeowners Association review under the CC&Rs |
| Marinwood (“Lower Lucas Valley”) | Unincorporated Marin County | Late 1950s | County zoning and design review; confirm whether the parcel falls in the Lucas Valley standards area |
| Terra Linda | City of San Rafael | 1950s onward; Eichlers beside Alliance homes | San Rafael’s Eichler and Alliance Homes Overlay (-E/A) on mapped lots |
Marin also has smaller Eichler groups. The Eichler Network names tracts in Sleepy Hollow and on Strawberry Point, and it points to non-Eichler modern tracts in Novato, such as Lynwood Park by Anshen and Allen and Orchard Park and Ferris Gardens by Cliff May and Chris Choate.
Upper Lucas Valley: two layers of approval
Upper Lucas Valley sits along Lucas Valley Road, with Miller Creek on its southern edge and open hills to the north. Its utility lines are underground, and the Eichler Network notes it is one of the few Eichler neighborhoods with its own stables.
The county layer is Marin County Code section 22.30.040. Its stated purpose is to preserve the Eichler-design architecture, and it requires design review for new construction and modifications unless the work is on the exempt list. The height cap for an Eichler-design house is 15 feet 6 inches, or the approved height of the existing home if greater; anything taller needs a variance. The section also sets a 0.30 floor area ratio, a 25-foot front setback and 6-foot side setbacks.
The private layer is the Lucas Valley Homeowners Association. According to the Eichler Network’s 2016 report, a volunteer architectural review committee works under the tract’s CC&Rs, keeps a required paint palette, and reviews roofs, driveways and garage doors. New owners receive the CC&Rs with their closing documents. County approval does not replace HOA approval, so plan for both.
Marinwood: the earlier tract
Marinwood lies east of Upper Lucas Valley, closer to Highway 101, and its Eichlers are older, from the late 1950s. It is also unincorporated, so Marin County’s Community Development Agency handles zoning, design review and building permits.
Don’t assume the Upper Lucas Valley standards carry over. Section 22.30.040 applies to the Lucas Valley area mapped in the Countywide Plan and to the R1:BLV zoning district, so check the parcel’s zoning on the county’s records before relying on its height limits or exemptions. Ask the seller whether any association or recorded restrictions apply to the specific lot.
Terra Linda: the city overlay
Terra Linda is a neighborhood of the City of San Rafael, so city planning rules, city permits and the city’s transfer tax apply. The Eichler Network traces the first contemporary houses there to the Terra Linda Corporation’s Alliance homes of the early 1950s, with Eichlers following alongside them; a 1959 aerial photo shows hundreds of each.
San Rafael’s zoning code includes an Eichler and Alliance Homes Overlay District (-E/A), Chapter 14.14, adopted in 2004. Its stated purpose is to keep the predominantly single-story design character of neighborhoods made up of Eichler and Alliance homes. On overlay sites the chapter replaces the base residential height and floor rules:
- Height: 17 feet maximum, measured from grade to the roof peak.
- Floors: one habitable floor, and lofts, mezzanines and similar areas count as habitable floors.
- Roof changes: design review for work that raises a roof more than 6 inches or changes its pitch, including raised or sloping roofs, covered atriums above the existing roof height, clerestories and exposed exterior ducting. Adding solar collectors is excluded.
Whether a particular lot carries the -E/A designation is shown on the city’s zoning map, so confirm it with San Rafael’s Community Development Department.
Because Alliance homes and Eichlers stand on the same streets, a listing that says “Eichler” may describe an Alliance house. Both are mid-century modern and both fall under the overlay, but buyers who want a specific builder should check the tract history.
Planning a remodel: which approvals each project needs
The table below compares common projects. It reflects the county code exemptions and the text of San Rafael’s overlay chapter as of October 2026; HOA rules in Upper Lucas Valley come on top.
| Project | Upper Lucas Valley (county) | Terra Linda (city overlay lots) |
|---|---|---|
| Replace windows, doors, siding or roofing | Exempt from county design review; building permit and HOA review may still apply | Building permit; design review if a roof change raises the height more than 6 inches or changes the pitch |
| Enclose the atrium | Exempt if it stays within the existing roofline height | Design review if a covered atrium would rise above the existing roof height; check floor area rules with the city |
| Solar panels | Flush panels up to 2 feet above the roof are exempt; taller needs design review | Solar collectors are excepted from the roof-pitch trigger |
| Second story or loft | Effectively ruled out by the 15-foot-6-inch cap without a variance | Not allowed: one habitable floor, 17-foot limit |
| Detached studio or shed | The code caps detached accessory structures on Eichler lots at 100 square feet and 8 feet tall; ask the county about anything larger | Base zoning and accessory structure rules apply |
| Exterior paint and garage door | Exempt from county review; HOA palette and garage door rules apply | No overlay review stated |
Owners who need more room usually build outward rather than up, within the setback and floor area limits. Our page on Marin renovation and design review explains how county and town design review hearings work.
What to inspect in a Marin Eichler
The construction is the same across the three tracts, so the inspection list is too. The setting adds a few Marin-specific items.
- Radiant floor heat. The pipes run inside the concrete slab. Ask whether the system is original, repaired, rerouted or replaced, and for any pressure-test results; hire a radiant heating specialist rather than relying on a general inspection.
- Low-slope roof. Roofs sit directly over exposed decking, so leaks show quickly. In Upper Lucas Valley, ask whether the current roof color and material were approved by the HOA.
- Glass walls. Single-pane glazing affects comfort and energy use; replacement usually needs a permit and energy compliance paperwork.
- Older materials. Houses of this age can contain asbestos and lead-based paint. Federal lead disclosure applies to homes built before 1978; see our lead-based paint disclosure guide.
- The hillside edge. Lots backing onto open space in Lucas Valley and Terra Linda deserve a close look at fire hazard mapping and defensible space. Read our guide to North Bay fire hazard severity zones and our notes on home hardening for wildfire.
- Creeks and drainage. Miller Creek and the Terra Linda creek channel run through these valleys. Check creekside lots on FEMA’s flood maps and look for water against the slab.
Diamond may refer you to partners we work with; you’re free to choose any provider.
Buying a Marin Eichler: questions to settle in escrow
- Confirm the jurisdiction and zoning: county R1:BLV, other county zoning, or a San Rafael lot with the -E/A overlay.
- In Upper Lucas Valley, read the CC&Rs and ask the HOA for its design guidelines, approval records for the house and any open violations.
- Compare what you see with the permit history, especially atrium enclosures, garage conversions and added rooms.
- Schedule the radiant heat, roof and sewer lateral inspections early, because specialists book out.
- If you plan a remodel, sketch it against the height, floor area and setback rules before removing your contingencies.
Selling an Eichler in Marin
Buyers shopping for an Eichler usually ask about originality, systems and design approvals. The strongest listings answer those questions in the disclosure package before the first showing.
- Gather the records. Radiant heat repairs and tests, roof permits, window replacements, and any HOA approvals or county design review decisions.
- Know the point-of-sale items. Requirements differ between the city and the county; our Marin County selling requirements page lists San Rafael’s resale report, sewer lateral rules and the AB 38 fire inspection.
- Budget the transfer tax. A Terra Linda sale pays San Rafael’s city tax in addition to the county tax, while Lucas Valley and Marinwood sales pay only the county tax. The seller customarily pays in Diamond’s North Bay markets, but it is negotiable and local custom varies; see California transfer tax.
- Describe the house accurately. Say whether it is an Eichler or an Alliance home, which original features remain, and what has been updated.
Questions people ask
Can you add a second story to an Eichler in Lucas Valley?
Not in practice. Marin County Code 22.30.040 caps Eichler-design homes at 15 feet 6 inches, or the existing approved height, and anything taller needs a variance. The Eichler Network has reported that the county rules bar second-story additions.
Is Terra Linda in the City of San Rafael?
Yes. Terra Linda is a San Rafael neighborhood, so city zoning, permits and the city transfer tax apply. Marinwood and Lucas Valley share the San Rafael mailing address but are unincorporated.
Does the Lucas Valley Homeowners Association review remodels?
Yes. Its architectural review committee works under the tract’s CC&Rs and, according to the Eichler Network, reviews paint colors, roofs, driveways and garage doors. That review is separate from county design review.
Do I need design review to replace Eichler windows in Upper Lucas Valley?
Not from the county: section 22.30.040 exempts replacing or repairing windows, doors, siding and roofing. You still need any required building permit, and HOA review may apply.
How do I tell an Eichler from an Alliance home in Terra Linda?
Ask for the tract history and original plans, and compare the house with documented Eichler models. Both builders worked in the neighborhood, and San Rafael’s overlay groups their homes together.
Are there Eichlers in Marin outside San Rafael?
A few. The Eichler Network names smaller Eichler tracts in Sleepy Hollow and on Strawberry Point; Novato has mid-century modern tracts by other designers.
Where can I find Eichlers in other parts of the Bay Area?
The Bay Area Eichler overview linked at the top of this page covers the Peninsula, East Bay and San Francisco tracts, and our Santa Clara County Eichler guide covers the South Bay.
If you are weighing an Eichler purchase or getting one ready to sell, we can help you sort out the rules for the specific lot. See our Marin County guide for the wider market, or contact us to talk through a property.
We wrote this page as general information on Marin’s Eichler design rules, and it is not legal advice. The County of Marin or the City of San Rafael can confirm what applies to a specific lot, and a California real estate attorney can answer questions about the Lucas Valley CC&Rs.
Sources & notes
- Eichler Network: The Eichlers of Lucas Valley (Dave Weinstein)
- Eichler Network blog: How architecture review works in Marin, Nov. 30, 2016
- Eichler Network: “Marincognito,” on mid-century tracts in Marin
- Marin County Code section 22.30.040, Lucas Valley community standards (GoCodebook mirror)
- San Rafael Municipal Code Chapter 14.14, Eichler and Alliance Homes Overlay District (GoCodebook mirror of the code text, as of Oct. 4, 2026)
Last reviewed October 2026 by Matthew Martinez.
