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Redwood City, CA Tree Protection: Parkway Planting (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Trigger
New building, commercial remodel, or sidewalk work
Tree size
24-inch box
Spacing
Every 30 feet on average
Tree well size
4 square feet, with grate/frame
Permit
Required under Sec. 18.243
Covered streets
Listed segments incl. all of El Camino Real

Summary

Redwood City requires new buildings, substantial commercial remodels, and sidewalk replacement or repair jobs to plant street trees along the property's street frontage. City Code Sec. 18.241 sets four-square-foot tree wells, grates, and 24-inch box trees spaced every 30 feet, with irrigation required unless the City exempts it in writing.

Upon the construction of a new building or the performance of substantial commercial remodeling, or when sidewalks are replaced or repaired, on the street frontage, as required by this Article, four (4) square foot street tree wells shall be dug, grates and frames shall be installed, and twenty-four-inch box trees planted every thirty (30) feet on average for the entire length of street frontage, except at driveways. The tree grate and tree well shall conform to the City's Engineering Standards. Irrigation shall be provided to each tree well unless exempted by the City in writing. The type of tree shall be specified by the City and the property owner will be responsible for watering the tree.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Zoning Code: Supplement 29 | City Code: Supplement 61 Update 1).

Full Breakdown

Under City Code Sec. 241, the trigger for street tree planting is any of three events on a lot's street frontage: construction of a new building, substantial commercial remodeling, or replacement/repair of the adjacent sidewalk. Where any of those happen, the property owner must dig four-square-foot street tree wells, install grates and frames, and plant 24-inch box trees spaced every 30 feet on average along the entire street frontage, skipping only the driveway cuts. The tree grate and well must conform to the City's Engineering Standards, and irrigation must be run to each well unless the City grants a written exemption.

The City picks the tree species for each location, but the property owner is on the hook for watering it going forward. The requirement is not citywide by default: Sec. 241 lists the specific street segments where it applies, including the full length of El Camino Real within Redwood City and the entire length of Woodside Road except along the expressway, plus block-by-block segments of streets such as Broadway, Main Street, Middlefield Road, Veterans Boulevard, Whipple Avenue, and Winslow Street. Any work in the public right-of-way to install these tree wells requires a permit under Sec.

243, issued by the Department of Community Development Services/Engineering and Construction after plans are submitted and approved. This street tree article sits inside Chapter 18's frontage-improvement package alongside curb/gutter/sidewalk repair (Sec. 238) and street paving (Sec. 239), so a remodel that triggers one of those obligations typically triggers street tree planting at the same time if the parcel sits on a listed street.

Violations & Fines

Sec. 18.241 carries no standalone fine, so a failure to install the required wells, grates, or trees falls to the Code's general penalty, Sec. 1.7. An unspecified violation can be charged as a misdemeanor punishable by up to a $1,000 fine and six months in jail, or, where treated as an infraction, escalating fines of $100 for a first offense, $200 for a second within a year, and $500 for each further offense, with each day of noncompliance counted as a separate violation. Doing the tree well or grate work without the Sec. 18.243 right-of-way permit is a separate compliance failure.

Frequently Asked Questions

Do I have to plant a street tree just for a sidewalk repair?
Yes, if your property is on one of the listed street segments. Sec. 18.241 triggers the tree-well and planting requirement whenever sidewalks along the frontage are replaced or repaired, not only for new construction, so a routine sidewalk fix can carry the same obligation.
What size and spacing does Redwood City require for street trees?
The code calls for 24-inch box trees planted every 30 feet on average along the entire street frontage, skipping driveway cuts, each set in a four-square-foot well with a grate and frame built to the City's Engineering Standards.
Who chooses the tree species and who waters it?
The City specifies the tree type for the location, but Sec. 18.241 puts watering responsibility on the property owner once it's planted. Irrigation to the well itself is required unless the City exempts the site in writing.
Is a permit needed to install the required street trees?
Yes. Sec. 18.243 requires a permit from the Department of Community Development Services/Engineering and Construction for any work in the public right-of-way under this Article, with plans submitted and approved before the permit issues.
Does this rule apply to every street in Redwood City?
No. Sec. 18.241 lists specific segments, such as block ranges on Broadway, Main Street, and Whipple Avenue, plus the full lengths of El Camino Real and most of Woodside Road. Properties outside those listed frontages are not covered by this section.

Sources & Official References

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