Do I Need a Coastal Development Permit to Remodel My Encinitas Home?

by Zach Arrington

Updated October 2026

Usually not for an ordinary remodel, but it depends on where the house sits and how much of it you take apart. Most of Encinitas is in the Coastal Zone, where a coastal development permit is required for development unless it is exempt. Improvements to an existing single family home are generally exempt if the home keeps at least 50 percent of its existing exterior walls. That exemption disappears if the home is in the City's Coastal Bluff Overlay Zone, within 50 feet of a bluff edge, on a beach or in a sensitive habitat area, or close to the beach and growing by 10 percent or more.

I'm Zach Arrington, Broker Associate with Real. I work the coastal corridor from Carmel Valley to Cardiff by the Sea, where I helped buyers purchase a single family home in 2025, and remodel plans come up often in the coastal purchases I'm part of. Whether a project needs a coastal permit changes the budget, the timeline and sometimes the price a buyer should pay, so this is worth getting right before you write an offer or hire an architect.

Is my Encinitas home in the Coastal Zone?

Probably. The City says "the majority of the City lies within the boundaries of the Coastal Zone," and its Local Coastal Program was certified by the California Coastal Commission on May 11, 1995, after which the City assumed coastal development permit authority on May 15, 1995. That means the City of Encinitas, not the Coastal Commission, issues most coastal permits here. Under Municipal Code section 30.80.010, "A coastal development permit is required for all development within the Coastal Zone of the City," unless the project is exempt.

The Coastal Commission still keeps permit jurisdiction over tidelands and public trust lands, and City decisions in certain areas can be appealed to the Commission. Those appeal areas include land between the sea and the first public road, within 300 feet of a beach or the top of a bluff's seaward face, and within 100 feet of a wetland, estuary or stream, per section 30.80.030.

The 50 percent rule, explained from the City's own policy

The City's written policy is the clearest test for a typical remodel. Planning Division handout PLN 110 says that if an existing single family residence maintains at least 50 percent of its existing exterior walls during an addition or remodel, "then a Coastal Development Permit is not required." The same policy, citing state regulations, treats replacing 50 percent or more of a house as a replacement structure rather than repair and maintenance.

Three details in that policy trip people up:

The calculation "shall be based upon the wall plane area at each story or mezzanine level," so each floor is measured separately.
"The 50 percent rule is not cumulative." Once a certificate of occupancy is issued, the calculation starts over for the next project.
The policy also notes that "Replacement means the walls do not move in any manner." If you are relocating walls rather than rebuilding them in place, ask planning staff how they will be counted.

A worked example

Here is how I walk a buyer through it, using a simple one story house that is 50 feet by 40 feet with 9 foot walls. The perimeter is 180 feet, so the exterior wall plane is 1,620 square feet. I ignored windows and doors to keep the math simple; ask the City how openings are treated on your plans.

Plan	Wall plane removed	Existing wall plane kept	Share kept	Meets the 50 percent policy?
Remove the 40 foot rear wall and 25 feet of each side wall	810 sq ft	810 sq ft	50.0 percent	Yes, just barely
Same plan plus one more 15 foot wall section	945 sq ft	675 sq ft	41.7 percent	No, a coastal permit is needed

One extra 15 foot opening moves the project from exempt to permitted. That is why I ask for a wall plane diagram early, before the design is locked, and why a buyer planning a big open floor plan should budget for a permit from the start.

When a remodel needs a permit even if you keep the walls

Location can override the 50 percent rule. These are the situations to check first.

Coastal Bluff Overlay Zone. The City's exemption in section 30.80.050 applies only when the development is not governed by the Coastal Bluff Overlay regulations, so homes in the bluff overlay are not covered by it, and PLN 110 says a permit may be required there. The bluff overlay also bars new structures within 40 feet of the top edge of the bluff, with limited exceptions, and allows interior remodeling "that does not involve changes to the existing foundation."
On a beach, in a wetland or sensitive habitat, or within 50 feet of a bluff edge. State regulation 14 CCR section 13250(b)(1) lists these locations as ones where improvements to a single family home require a permit.
Near the beach and getting bigger. Under section 13250(b)(4), on property between the sea and the first public road, or within 300 feet of the inland extent of a beach, "an increase of 10 percent or more of internal floor area" or an increase in height of more than 10 percent requires a permit.
Grading near the coast. Significant alteration of land forms on a beach, wetland or dune, within 50 feet of a bluff edge, or in sensitive habitat requires a permit under section 13250(b)(2).
An earlier permit said so. If the home's original coastal permit stated that future improvements would need a permit, they do, per section 13250(b)(6).
Anything needing another discretionary approval. The City exemption also requires that the project conform to the Municipal Code and not need a use permit, variance or similar approval.

What about an ADU?

If you are adding an accessory dwelling unit that is not completely inside the existing house, adds habitable area, or converts space that was not habitable, plan on a coastal permit. The City's ADU page says, "If the site is located within the Coastal Zone, a Coastal Development Permit is required," and "The building permit cannot be issued until the CDP has been issued." Municipal Code section 30.48.040 allows either a coastal development permit or an administrative coastal development permit for these units.

What it costs and how long it lasts

The City's planning fee schedule dated June 2026 lists a coastal development permit at $2,587 and a bluff top coastal development permit at $8,445. Those fees took effect July 1, 2026, and they do not include architect, engineering, building permit or other agency costs. Once granted, the City may declare a permit expired, after notice to the owner, if substantial construction is not completed within two years, unless a longer period was approved; extension requests must be filed at least 15 days before expiration, and all extensions together cannot exceed two years, per sections 30.80.162 and 30.80.164.

Where this applies, and where it does not

This post covers single family homes inside Encinitas city limits, including Cardiff by the Sea, Leucadia, Olivenhain and New Encinitas, to the extent the property is in the Coastal Zone. It does not cover condos governed by an HOA's own approval process, commercial property, or homes in Solana Beach, Del Mar or Carlsbad, which have their own coastal programs. A separate building code definition treats a building as newly constructed when more than 50 percent of the exterior bearing walls are removed; that is a building permit question, not a coastal permit one, so do not confuse the two. Homes that do not conform to current zoning rules can face separate limits under Municipal Code Chapter 30.76, so ask planning staff about those as well. Confirm your specific address with the City's Development Services staff before you commit. I also covered flood and storm risk for Cardiff by the Sea buyers, which matters for the same coastal homes.

If you are buying in Encinitas with a remodel in mind, Zach Arrington will help you sort out the permit path before you write the offer, and connect you with architects and contractors who work in the Coastal Zone.

FAQ

Do I need a coastal development permit for a kitchen remodel in Encinitas?

Usually not. An interior remodel of an existing single family home that keeps at least 50 percent of its exterior walls is generally exempt under the City's policy. The exemption does not apply in the Coastal Bluff Overlay Zone or in the state's listed sensitive locations, such as within 50 feet of a bluff edge.

What is the 50 percent rule in Encinitas?

It is the City's policy that a remodel or addition to a single family home does not need a coastal development permit if the home keeps at least 50 percent of its existing exterior walls. The wall plane area is measured at each story, and the count resets once a certificate of occupancy is issued.

Does a second story addition need a coastal permit in Encinitas?

It can. If the home is between the sea and the first public road or within 300 feet of a beach, increasing internal floor area by 10 percent or more, or height by more than 10 percent, requires a permit under state regulations. Homes in the Coastal Bluff Overlay Zone also fall outside the City's exemption.

How much does a coastal development permit cost in Encinitas?

The City's June 2026 planning fee schedule lists $2,587 for a coastal development permit and $8,445 for a bluff top coastal development permit, effective July 1, 2026. Design, engineering and building permit costs are separate.

How long is an Encinitas coastal development permit good for?

The City may declare a permit expired, after notice, if substantial construction is not completed within two years of approval unless a longer period was granted. Extension requests must be filed at least 15 days before expiration, and total extensions cannot exceed two years.

Do I need a coastal development permit for an ADU in Encinitas?

Usually, if the property is in the Coastal Zone. The City's code requires one when the unit is not completely inside the existing house, adds habitable area, or converts space that was not habitable. The City says the building permit cannot be issued until the coastal permit has been issued.

Is Cardiff by the Sea in the Coastal Zone?

Much of it is, since the City says the majority of Encinitas lies within the Coastal Zone. Check the specific parcel with the City before relying on it, because the boundary and the Coastal Commission appeal areas are drawn parcel by parcel.

Who issues coastal development permits in Encinitas, the City or the Coastal Commission?

Mostly the City. Encinitas has had a certified Local Coastal Program since 1995 and issues most permits itself, while the Coastal Commission keeps jurisdiction over tidelands and public trust lands and hears appeals in certain areas near the coast.

Planning to buy or remodel in Encinitas? Call or text Zach Arrington at (619) 374-5339 or email zach@zarealtygroup.com.

General information only, not legal or design advice. Confirm permit requirements for your specific property with the City of Encinitas. Zach Arrington, DRE 02135675, Real Broker, LLC.