Sunnyvale's Eichler design guidelines date to July 2009, and they still matter in 2026. In July 2026 the City Council adopted new objective design standards for lower density homes and repealed its citywide home Design Techniques, but the council report says the new standards will not apply to homes within Eichler neighborhoods.
This guide explains where the Sunnyvale Eichler Design Guidelines came from, which homes they cover, how city staff apply them, what the sections quoted in staff reports say, and how they sit beside the 2026 standards and the city's single-story districts. Everything here comes from Sunnyvale staff reports, council records and the city's design guidelines page.
Where the guidelines came from
A 2016 Planning Commission report gives the history: "The Guidelines stemmed from a multi-year study for potential Heritage Resource Districts that started in 2007. That study did not result in classifying the Eichler District as a Heritage Resource District, but did result in the preparation of the Eichler Design Guidelines."
The same report says a one-story limit was discussed during the study, and "It was determined that individual neighborhoods could petition for single-story overlay zone on a case-by-case basis and that it was inappropriate to limit height in the Guidelines. As a result of the study, the City Council adopted the Eichler Design Guidelines in July 2009."
A 2017 report puts it this way: the city "decided not to place historic designation on the Eichler neighborhoods and instead adopt Eichler Design Guidelines for all homes within the identified Eichler Neighborhoods." A June 2020 report describes the document as containing "various design suggestions and policies to maintain the unique architectural style of Eichler and Eichler-like homes and their neighborhoods." Our Fairbrae history covers the 2020 consolidation of the city's design documents.
Which homes the guidelines cover
The guidelines apply to homes in the neighborhoods the city designated as Eichler neighborhoods, not to every Eichler in Sunnyvale. Staff reports show where the lines fall:
A designated Eichler neighborhood. Reports on single-story rezonings in Fairbrae, Primewood and the Fairpark Addition describe homes there as subject to the guidelines; the 2016 Fairbrae report says "most of the properties are subject." The Fairpark report says "The 19 Eichler homes in the Fairpark Addition tract will continue to be subject to the Eichler Design Guidelines."
An Eichler tract the city didn't designate. A 2017 report says Sunnymount Garden (Tract 452) "was one of the two housing tracts developed by Joseph Eichler in year 1948 and 1949," and that "The City did not designate Sunnymount Garden District as an Eichler neighborhood subject to the design guidelines."
A house outside a designated neighborhood. A 2022 Planning Commission report says a house "not within a City-designated Eichler neighborhood ... is not subject to the City's Eichler Design Guidelines."
A non-Eichler house inside an Eichler area. A 2016 Fairbrae rezoning report says future additions to the non-Eichler homes there "would not be subject to the Eichler Design Guidelines."
None of the reports we read lists every designated neighborhood, so ask Sunnyvale's planning division whether your lot is in one before you design. Our Rancho Sans Souci and other Sunnyvale tract histories cover individual neighborhoods.
How staff apply them: guidance, with weight
Sunnyvale's rezoning reports use the same paragraph again and again: "The Guidelines are used in support of the zoning code and provide guidance when absolute standards are inappropriate. The Guidelines focus on design issues, compatibility, and privacy concerns and still allow creativity and individuality in architectural expression. Residential design review decisions in Eichler neighborhoods must be compatible with the Guidelines."
So the guidelines are not a zoning code, but where a project goes through design review in a designated Eichler neighborhood, staff say the decision must be compatible with them. They also don't ban second stories. The 2017 Fairpark report says "Although the Eichler Design Guidelines do not prohibit 2-story additions, the Guidelines can be used to ensure that all such additions are respectful of the unique privacy needs of Eichler homes," and a 2016 report says "the design guidelines include specific guidelines to consider in the review of a two-story home in an Eichler district."
When review happens depends on size. An April 2026 Planning Commission report describes three levels: staff-level review without public noticing, staff-level review with public noticing, and Planning Commission review with a hearing and noticing. Projects below the staff-level threshold "would only be subject to a building permit review." The 2026 changes revised those thresholds; we couldn't read the new figures in the report text, so ask the city where your project falls.
What the guidelines say: sections quoted in staff reports
The guidelines document is posted on the city's design guidelines and standards page, but we couldn't open the PDF for this post. These are guideline sections as Sunnyvale staff quoted them in public reports, with the document's own wording:
3.1.1 "Utilize traditional Eichler building forms consistent with Eichler homes in the surrounding neighborhood."
3.1.2 "Utilize traditional Eichler materials and details." Under it, 3.1.2.C: "Do not use stone facing with a rough or irregular texture, and clapboard siding with overlapping edges that create a saw-tooth profile."
3.3.3 "Avoid windows looking into adjacent homes' windows and private outdoor space." Staff explain the intent is to protect adjacent yards and Eichler homes, "which contain expanses of windows." Staff add that second-floor balconies on side and rear elevations are also discouraged in the guidelines.
3.5.4 "Integrate fencing with the house style." Item C says fence design "should be simple and modern in appearance," that original architectural fences in some models "should be maintained or replaced, as necessary," and that "In most cases, simple wood fencing, without lattice, is the appropriate design." Our fence law guide covers fence rules more broadly.
3.7.1 "Incorporate a Modernist Style sympathetic to the forms and style of the Eichler homes nearby."
3.7.2 "Use building volumes that are compatible with the surrounding Eichler neighborhood."
Note the verbs. Most of these are "utilize", "avoid", "should" and "use", the language of guidance. Item 3.1.2.C says "Do not," so read the full section before you assume a point is only advice.
One caution: Sunnyvale reports also cite a rule that a new second floor in a mostly one-story neighborhood should not exceed 35 percent of the first floor area. That came from the citywide Design Techniques, not the Eichler guidelines, and the council repealed the Design Techniques in July 2026.
What changed in 2026, and what didn't
On July 21, 2026, the City Council adopted, with modifications, a resolution establishing Lower Density Residential Objective Design Standards for single-family dwellings, two-unit dwellings and Dual Urban Opportunity (DUO) housing, repealed the citywide Design Techniques, and introduced an ordinance that amends Municipal Code Chapter 19.32 (building heights, lot coverages and floor area ratios) and repeals and replaces Chapter 19.80 (Design Review). The council adopted that ordinance, No. 3258-26, on its consent calendar on July 28, 2026.
For Eichler owners, the key lines are in the council report and the June 29, 2026 draft of the standards attached to it. Because the council adopted the standards with modifications, confirm the final text with the city.
"The proposed Lower Density Residential Objective Design Standards will not apply to homes within Eichler or Taaffe-Frances neighborhoods."
The draft standards' note: "These standards do not apply to dwellings subject to the Eichler Design Guidelines or Taaffe-Frances Heritage Neighborhood Design Guidelines. Lower density residential development projects in those neighborhoods shall be consistent with their respective guidelines."
"The Introduction section of the Eichler Design Guidelines would need to be updated to reflect revised Design Review thresholds." Staff found those updates to be minor changes the Director of Community Development can make under Municipal Code section 19.80.020.
So, on the council record, nothing replaced the Eichler guidelines in 2026, and as of November 2026 the city's design guidelines page still posts the Eichler Design Guidelines next to the new Lower Density Residential Objective Design Standards. What changed around them is the review thresholds and the citywide documents next door. A 2022 report had already noted that the Design Techniques "are directed toward Ranch-style houses with sloped roofs and do not apply to Eichler and other modern-style homes with flat roofs." We couldn't confirm the ordinance's effective date or whether the Introduction has been updated yet, so ask the planning division for the current copy as of November 2026.
Single-story combining districts
Height is handled by zoning, not by the guidelines. Several Sunnyvale Eichler neighborhoods have asked for single-story combining districts. A December 2017 Planning Commission report lists the limits a district adds: "a limit of one habitable floor (story)," lofts, mezzanines and habitable attics prohibited, a maximum height of 17 feet (instead of 30 feet), and a maximum floor area ratio of 45 percent. It adds that the district "will remain in effect unless district owners initiate a similar application process to request that it be removed." Those figures are from 2017, and the 2026 ordinance amended Chapter 19.32, which sets heights and floor area ratios, so check them against the current code. Our guide to single-story overlay districts covers how they're applied for in each city.
This is general information as of November 2026, not legal advice. Confirm with Sunnyvale's planning division, a licensed architect or contractor, or an attorney before you design.
Frequently asked questions
Are Sunnyvale's Eichler Design Guidelines still in effect?
Yes, based on the July 2026 council record. The council report says the new Lower Density Residential Objective Design Standards will not apply to homes within Eichler neighborhoods, and the June 29, 2026 draft standards say projects there "shall be consistent with their respective guidelines." The council adopted the standards with modifications, so confirm the final text with the city.
Can I add a second story to a Sunnyvale Eichler?
Staff reports say the guidelines don't prohibit two-story additions but are used to review their design and privacy. A single-story combining district, where one applies, limits homes to one habitable floor. Ask the planning division which rules apply to your lot.
Does every Eichler in Sunnyvale fall under the guidelines?
No. They apply to homes in the city's designated Eichler neighborhoods. A 2017 report says Sunnymount Garden, an early Eichler tract, wasn't designated, and non-Eichler homes inside a designated area have been treated as outside the guidelines.
Related reading
Primewood Eichler History: Sunnyvale's Late Steep-Gable Tract
Fairwood Eichler History: Sunnyvale's 1961–62 Tract and Its Rules
Sunnyvale Eichler Neighborhoods: A Guide to Six Mid-Century Tracts
More guides on this topic: Owning & Renovating a Mid-Century Modern Home
Planning a remodel or addition on a Sunnyvale Eichler you own or want to buy? Call or text the Boyenga Team at Compass at (408) 373-1660 or (650) 383-8606, or contact the Boyenga Team to talk it through.
