Home Remodeling in Bonita, CA

Bonita, CA 91902 · Home remodeling

Four finished Eco jobs fall inside ZIP 91902, and they came in between $9K and $86K. The County of San Diego Planning & Development Services issues the building permit here. The County’s own guide puts the typical backlog before a first residential plan check at about 4 weeks. A rule that can change the budget is the set of Conditions of Approval, where fire district and septic review can add steps before the permit issues.

Where our Bonita-area projects are

Four of our completed projects are inside ZIP 91902. Eight more sit in nearby ZIPs: 5 in Chula Vista (91910, 91913 and 91914) and 3 in Spring Valley (91977). The permit office column shows which agency each area’s jobs go through.

We have no Bonita photos yet, so the cards show work from other San Diego County jobs. Each card also gives the Bonita-area job count for its type.

Completed Eco projects by area, from our job records as of September 2026. Only finished jobs with at least 80% of the contract paid are counted.

Area	ZIP	Completed	Permit office
Bonita	91902	4: 2 bathrooms, 1 kitchen and 1 remodel	County of San Diego
Chula Vista	91910	1 bathroom	City of Chula Vista
Chula Vista	91913	3: 1 bathroom, 1 kitchen and 1 remodel	City of Chula Vista
Chula Vista	91914	1 kitchen	City of Chula Vista
Spring Valley	91977	3: 2 bathrooms and 1 outdoor project	County of San Diego

What our Bonita-area remodels finished at

We pulled final contract values for the 12 completed Eco projects in and around Bonita. Each figure counts the signed price plus approved extras such as change orders and selections, and it skips anything the homeowner buys directly. 4 of the 12 are in ZIP 91902 and 8 are in nearby ZIPs. Treat each figure as a single job, since the set is small.

One outdoor project in Spring Valley is left out of these ranges.

Where the 11 bathroom, kitchen and remodel jobs landed

• Under $31K: the bathrooms at $15K, $22K and $24K, and the $9K remodel.
• $31K to $86K: the bathrooms at $31K, $44K and $51K, all 3 kitchens, and the $54K remodel.
• Over $100K: none of the 11.

ADU and addition planning figures

None of the 12 jobs is recorded as an ADU or an addition, so we publish no local figure for either. The planning figures below are Eco’s own, alongside the 2025 Cost vs. Value benchmark.

Our own ADU work across San Diego County is the clearest guide: garage conversions have generally run $100,000 to $200,000, and new ADUs of about 500 sq ft have run $220,000 to $350,000. Site work, utilities, the finish level and fees move a project within those ranges, so we price each one from its drawings. The table adds our published per-square-foot planning range and an independent benchmark for additions. Neither is a quote for your home.

ADU figures are Eco’s published San Diego planning ranges. Addition figures are the 2025 Cost vs. Value Report, Pacific region; sizes shown are its midrange definitions, and the upscale versions are larger.

Project	Planning range	What sits on top in Bonita
Detached or attached ADU	$375–$600 per sq ft for construction, plus $8,000–$25,000 for design	County plan review and permit fees of $1,940 + $0.410 per sq ft and $1,677 + $0.564 per sq ft (PDS 613, effective July 10, 2026). Impact fees do not apply at 750 sq ft or less.
Primary suite addition (24 × 16 ft, about 384 sq ft)	$185,431 midrange; $390,895 for the larger upscale version	For an addition over 100 sq ft that needs plan check: $2,196 + $0.372 per sq ft plan review and $1,466 + $0.759 per sq ft permit. School fees are covered in the local conditions.
Bathroom addition (6 × 8 ft midrange)	$65,326 midrange; $121,772 for the larger upscale version	For an addition of 1 to 100 sq ft: $452 plan review and $1,272 permit.

The per-square-foot range covers construction only. The project totals in the paragraph above are whole projects, so compare totals with totals and do not multiply a rate by a size to get a price.

Scope is covered more deeply in our bathroom and kitchen cost guides, our ADU cost guide and our home addition guide. Their permit sections are written around City of San Diego rules, so use this page for Bonita’s steps.

How a Bonita permit moves through the County

Bonita is an unincorporated community, not a city, so the County of San Diego Planning & Development Services Building Division issues the building permit. You can reach that office at (858) 565-5920, and the Zoning Counter, which handles planning questions, at (858) 565-5981.

What needs a permit. The County keeps a list of structures that are exempt from a building permit because of their size and location, and it asks you to call if you are unsure. Exempt work still has to meet the Zoning Ordinance and health and safety codes. Every plan sheet must be signed by a licensed civil engineer, structural engineer or architect, unless County form PDS 118 lists an exemption.

How a County building permit moves, from the County’s PDS 441A guide (revised 2013) and its current permit pages.

Step	What happens	Time
1. Apply and pay	Submit plans to the PDS Building Division, or apply for simple permits online through Accela Citizen Access. Plan check does not begin until the plan check fee balance is paid in full.	Starts after payment. A plan check stays valid for 1 calendar year from submittal.
2. First plan check	Plan reviewers test the drawings against the codes. The County’s guide says about half of projects need more than 2 plan check cycles.	Typical backlog before initial plan check: about 4 weeks for residential projects, per the 2013 guide.
3. Conditions of Approval	The County assigns a Permit Record ID with conditions you must meet before it issues the permit. Fire district approval, flood control, septic review and driveway review can take longer.	Cleared before the permit issues.
4. Septic review, if not on public sewer	The County’s Department of Environmental Health and Quality reviews an On-site Wastewater Treatment System (OWTS) Layout Application to decide whether the site can support a system.	Set by DEHQ approval of the OWTS Layout Application.
5. Permit issued, then work	Work must start within 2 years or the permit lapses. A passed inspection is needed at least every 180 days, and all work must be finished within 3 years.	Start within 2 years; finish within 3.

What County permits cost

The County’s fee schedule, PDS 613, effective July 10, 2026, lists plan review and permit fees for each type of work. These are County building fees only, not Eco’s price.

County building plan review and permit fees, PDS 613, effective July 10, 2026 (FY 26/27).

Work	Plan review fee	Permit fee
Major single-family remodel, no added square footage	$2,296	$1,896
Accessory dwelling unit	$1,940 + $0.410 per sq ft	$1,677 + $0.564 per sq ft
Addition of 1 to 100 sq ft	$452	$1,272
Addition over 100 sq ft that needs plan check	$2,196 + $0.372 per sq ft	$1,466 + $0.759 per sq ft

A complete first submittal saves the most time here. Our remodel timeline guide walks through each clock.

Local conditions that shape the scope and the budget

1. Wildfire rules and the local fire district

Bonita has its own fire district, the Bonita-Sunnyside Fire Protection District, so fire approval is a separate step from the building plan check. In the Wildland Urban Interface, the County requires a 100-foot fuel modification area around structures, or to the property line when that is nearer. Whether a parcel sits in the Wildland Urban Interface or a Fire Hazard Severity Zone depends on its address, so check the County’s Fire Hazard Severity Zone map before you budget the site work.

2. Septic or sewer, decided by the address

Where a property is not on a public sewer, the County’s Department of Environmental Health and Quality reviews the septic system. An ADU can add a septic requirement: the County’s handbook says new kitchens and bathrooms in a proposed ADU may need an added septic tank to reduce the load on the existing disposal field. Feasibility depends on DEHQ approval of an OWTS Layout Application. Check the sewer status of the address first, because the community name alone does not settle it.

3. Housing age in the Bonita area

Census survey figures place the typical home in the Bonita community at 1976 and in the 91902 ZIP area at 1978. Those are medians. They do not say how many homes predate 1978, and ZIP areas do not match community boundaries, so quote the Bonita figure or “the 91902 area.” In our experience, most surprises come from wiring and plumbing that sit behind finished walls.

4. Added floor area and the school district

The school fee depends on the district that serves the address. Chula Vista Elementary charges $2.37 per sq ft of habitable area on residential construction, effective October 12, 2026, and exempts residential additions of 500 sq ft or less. Sweetwater Union High lists $3.01 per sq ft for residential room additions and conversions, as of June 22, 2026. Under state law, a district can charge on an addition only once the increase tops 500 sq ft, and then the fee applies to all of the added space. We have not checked every Bonita address against district boundaries, so confirm yours.

ADUs and room additions in the Bonita area

The County’s ADU handout, PDS-611 (revised September 2, 2026), sets the local ADU rules for the unincorporated area. Where it conflicts with state law, state law controls, as the County’s Director’s Determination says.

County of San Diego ADU and JADU rules, from form PDS-611 (revised 09/02/2026) and state law. State ADU law changes; confirm against the current code for your parcel.

Rule	ADU	Junior ADU (JADU)
Size	Detached: up to 1,200 sq ft, regardless of the main house. Attached: up to 50% of the main house, capped at 1,200 sq ft. The 50% limit is lifted for attached units up to 850 sq ft, or up to 1,000 sq ft with more than 1 bedroom.	One per lot, up to 500 sq ft.
Height and setbacks	Detached units are capped at 25 feet. A new ADU stays at least 4 feet from the side and rear lot lines, unless a larger fire setback applies.	Built entirely within the existing or proposed house.
Parking	One space, which can sit inside a setback or in tandem in an existing driveway. A new detached ADU needs one only in the cases the County lists, such as a site more than half a mile from public transit. A demolished garage does not have to be replaced.	None.
Owner occupancy	Not required for an ordinary ADU.	Applies only if the JADU and the main house share a bathroom.
Impact fees	Impact fees do not apply at 750 sq ft of interior livable space or less. Larger units pay in proportion to the main house.	Impact fees do not apply at 500 sq ft or less.
School fees	No school fee below 500 sq ft of interior livable space.	No school fee below 500 sq ft of interior livable space.
Review time	Within 15 business days the permit office must say in writing whether the application is complete. With a house on the lot, it must approve or deny a complete application within 60 days, or it is deemed approved.	State law sets no review deadline for a JADU.

The County has dwelling-unit plans that can be used as detached ADUs. They are about 85% complete, and you fill in the project details. The state decision clock in the table covers ADUs on lots that already have a house. For the ADU-or-addition decision, see our ADU vs. room addition guide, and check the County’s ADU information page.

A permitted accessory structure converted to an ADU has no County size, height, lot coverage or setback standards, except for fire safety. A garage conversion may add up to 150 sq ft for entry and exit. The County strongly encourages early contact with the fire department about fire setbacks, sprinklers and a hydrant. Fire sprinklers are not required in an ADU when the main house did not need them.

An ADU may be rented, but not for less than 30 days, and it is not meant to be sold apart from the main house. For a room addition, the County fee rows above apply, and the school fee rule in the local conditions covers the added space. Our room additions page covers the scope, and our ADUs page describes our process.

How long a Bonita remodel takes

Three separate clocks run through a remodel: design, County plan review and construction. The rows below show planned construction time for two nearby jobs, not how long those jobs ran.

Scheduled construction durations from our nearby jobs, not actual run times.

Project	Planned construction time
Bathroom remodel	About 3 weeks scheduled on a $24K job in nearby ZIP 91913.
Kitchen remodel	About 4 weeks scheduled on a $54K job in nearby ZIP 91914.

• Permit review. The first plan check is the figure in the permit steps above. Conditions of Approval must be cleared before the permit issues, so they can move your start date.
• ADU review. The state clock for an ADU is in the ADU table above. Treat it as a legal maximum, not a typical time.

Each job’s schedule, photos and decisions are kept in Buildertrend, so you can see what was decided and when.

What homeowners say

We hold a 4.7-star rating on Google across 101 reviews, and more than 300 reviews across Google, Yelp and Houzz. Three short excerpts, quoted exactly:

No Google review we have names Bonita or a nearby community, so these excerpts describe project types only.

Read all of our Google reviews, including the critical ones.

How we run your project

Design, permits and construction sit with one team. The same people who draw the plans speak with the County and run the site.

1. Phone consultationWe talk through what you want to change, your timing and your budget range.
2. In-home meetingAn Eco project director walks the house with you, looks at the space and talks through priorities and budget plainly.
3. Concept and feasibilityDesign, selections and engineering are resolved before the plans go to the County of San Diego PDS Building Division.
4. ConstructionEach stage is inspected, with progress, photos and decisions documented in Buildertrend.
5. Final projectFinal inspection, walkthrough and punch list, and the permit closed out.

What to check before you hire

• Name the County filer. Before you sign, get in writing who submits the application, clears the Conditions of Approval and books inspections.
• A license you can verify. Look up the number on the CSLB website. Ours is #1074166.
• A legal deposit. California caps a home improvement down payment at $1,000 or 10% of the contract, whichever is less.
• Septic and fire answers in writing. Ask the Bonita-Sunnyside Fire Protection District, and DEHQ where the property is not on sewer, what they need from you before you sign.

Bonita remodeling FAQ

More Bonita pages: kitchen remodeling in Bonita, bathroom remodeling in Bonita and ADU renovation in Bonita. Or see all Eco projects.

Project counts and cost figures come from Eco Home Builders’ own job records and describe completed projects, not a quote for yours. One of the 12 jobs has more paid to date than its final contract value, so its figure reflects contract value, not cash received. The County, the fire district, the two school districts and the State set the rules, fees and review times here. Confirm them for your parcel, because they change.