Downey Building Permits & Inspections: What to Do First
Quick answer: Building permits, plan review and construction inspections inside the City of Downey, California are handled by the City of Downey Community Development Department, Building & Safety Division. The office is on the first floor of Downey City Hall at 11111 Brookshire Avenue, Downey, CA 90241. Building & Safety can be reached at (562) 904-7142.
For most applicants, the fastest starting point is now the City’s Accela Citizen Access (ACA) system. As of July 1, 2026, permit applications and plans are submitted electronically rather than as new paper plan-check packages.
USBuilding.org is an independent information resource. It does not issue permits or perform City inspections. Final permit, zoning and code decisions are made by the City of Downey.
Downey Building & Safety Division Contact Information
| Official office | City of Downey — Community Development Department, Building & Safety Division |
|---|---|
| Address | 11111 Brookshire Avenue, 1st Floor, Downey, CA 90241 |
| Building phone | (562) 904-7142 |
| Fax | (562) 622-4816 |
| Building voicemail | (562) 904-7141 |
| City Hall schedule | Monday–Thursday, 7:00 AM–6:00 PM; closed Friday |
| Building counter | Morning and afternoon service with a noon closure; permit issuance and plan-submittal cutoff is 5:00 PM |
| Online permit system | Accela Citizen Access (ACA) |
The City’s current Building & Safety information states that the counter is closed during the noon hour. If you sign into the lobby kiosk after approximately 11:30 AM, expect service after the lunch closure. For anything involving permit issuance, do not arrive near closing—the City’s published cutoff is 5:00 PM.
Before calling: have the property address, permit/application number if one exists, project description and contractor information ready. This usually makes it much easier for staff to identify the correct record.
Do You Need a Building Permit in Downey?
A permit is generally required before constructing, enlarging, altering, repairing, moving or demolishing a regulated building or structure. Permits can also be required when installing, replacing or altering regulated electrical, plumbing, mechanical or gas systems.
Common examples include:
- New homes and other new buildings
- Room additions and structural alterations
- Residential and commercial remodels
- Accessory dwelling units (ADUs)
- Tenant improvements
- Roof replacement
- Swimming pools and some spas
- Patio covers and carports
- Electrical panel changes
- Water-heater replacement
- Air-conditioning and furnace replacement
- Plumbing, electrical and mechanical alterations
- Demolition
- Many walls, fences and retaining walls
Micro-step: check your project before spending money on plans
- Write a short but specific description of the proposed work.
- Note the property address and Assessor’s Parcel Number if available.
- Check the City’s Building Handouts/Forms page for a project-specific guide.
- If the project changes building size, use, setbacks or site layout, confirm Planning requirements before finalizing drawings.
- If you are still unsure whether a permit is required, call Building & Safety at (562) 904-7142 and describe the exact work.
Some Work May Be Exempt From a Building Permit
Downey publishes several building-permit exemptions. These do not automatically remove zoning, engineering, electrical, plumbing, mechanical or other requirements.
| Project | Published building-permit exemption | Important catch |
|---|---|---|
| Small detached shed/playhouse | One story and no more than 120 sq. ft. | Location and setbacks still need Planning review; electrical, plumbing or mechanical work requires separate permits. |
| Wall or fence | Up to 42 inches in height | Planning and possibly Engineering approval may still apply. |
| Retaining wall | Not over 4 feet measured from bottom of footing to top of wall | Exemption can disappear when the wall supports a surcharge or certain liquids. |
| Some sidewalks, decks, platforms and driveways | Under the City’s published size and existing-line/grade conditions | Do not assume every new driveway or deck qualifies. |
| Small prefabricated residential pool | Less than 24 inches deep, no more than 5,000 gallons and entirely above ground | Other safety or zoning requirements can still apply. |
How to Apply for a Downey Building Permit Online
Downey now uses Accela Citizen Access for permit applications, electronic plan review, inspection scheduling and permit-record searches.
Micro-step: submit a new permit application
- Open Accela: go to the City’s official ACA portal.
- Create an account: choose the registration option if you have not used the Downey portal before. Registration is required for submitting applications and requesting applicant-specific services.
- Choose Building: select the Building service rather than Planning, Public Works or Fire unless your project instructions direct you otherwise.
- Start the appropriate application: select the permit type that matches the work.
- Enter the project location: use the correct Downey street address and parcel information requested by the system.
- Enter owner and contractor information: use names and license information that match official records.
- Describe the work clearly: state exactly what is being built, replaced, altered or demolished.
- Upload plans and supporting documents: use the City’s electronic plan-check requirements for file format, orientation, scale and naming.
- Submit the application: save the Accela record number immediately.
- Watch your account and email: corrections, conditions, fee notices and approvals are communicated through the electronic process.
The City also provides short tutorials covering account registration, login, creating an application, uploading plans, resubmitting corrected plans, downloading approved plans, revisions and inspections on its Electronic Plan Check page.
Permits that may be issued more directly online
Downey identifies several common permit types that can use a simplified or automated online process, including:
- Electrical panel replacements up to 400 amps
- Water-heater replacements
- Air-conditioner and furnace replacements
- Eligible residential solar projects using SolarAPP+
More complex permits still start online, but they can require plan review and approvals before issuance.
What to Prepare Before Submitting
The exact documents depend on the project, but preparing the basics first prevents many avoidable correction cycles.
For most construction projects
- Complete permit application information
- Accurate project address and APN
- Clear scope-of-work description
- Site or plot plan when location, setbacks or structures matter
- Architectural plans as applicable
- Structural plans and calculations when required
- Electrical, mechanical or plumbing information when applicable
- California energy-compliance documents when required
- CALGreen information when applicable
- Planning or other department approvals required for the project
The City’s official handout library includes residential and commercial submittal requirements, demolition requirements, permit forms, soils-report information, authorization forms and other project-specific documents.
If you are a licensed contractor
At permit issuance, the City may require your California contractor license information, proof of workers’ compensation insurance when employees are involved, and a current City of Downey business license.
If you are the property owner
An eligible owner-builder generally needs identification. If you recently acquired the property and the City’s records have not yet updated, Downey states that ownership may need to be demonstrated with the appropriate recorded deed or a certified copy.
If someone else is obtaining the permit
An authorized agent can require specific authorization from the property owner or licensed contractor. Downey publishes separate authorization forms and examples in its handout library. Do not assume a verbal authorization is enough.
How Downey Building Permit Fees Are Calculated
There is no reliable single price for a Downey building permit. The City’s current fee information explains that building permit and plan-check costs depend heavily on project valuation, project size, complexity and the reviews required.
The final total can include more than the base Building & Safety charge. Depending on the project, additional charges may come from Planning, Engineering, Fire, state programs, school districts, sewer requirements or other agencies.
Micro-step: get a realistic fee estimate
- Open the City’s current Building & Safety Fee Schedule page.
- Review the current fiscal-year fee schedule and valuation information.
- Identify whether the project requires building, electrical, plumbing or mechanical permits.
- Check whether plan review, Fire, Planning or Engineering approvals will also apply.
- For a meaningful estimate, call (562) 904-7142 with the project scope, size and estimated construction value.
Do not rely on an old downloaded fee PDF. Downey notes that valuation tables and fees can change, so use the City’s current fee page when you are ready to submit.
How to Schedule a Downey Building Inspection
Construction inspections are scheduled through the City’s Accela Citizen Access portal. Inspection services are available Monday through Thursday; the City is closed Friday.
Downey states that inspections are generally performed between 8:00 AM and 4:30 PM. A request submitted before 3:00 PM on the preceding business day can generally be considered for the next available business day, subject to availability.
Micro-step: request an inspection in ACA
- Sign in to the Downey ACA portal.
- Open the Building record for your permit.
- Confirm the property address and permit number.
- Open the inspection section.
- Select the inspection type shown for the current construction stage or job card.
- Choose an available inspection date.
- Add the requested site-contact information.
- If you have a preferred time, place it in the notes. The City may consider the request but does not guarantee an exact appointment time.
- Submit the request and verify that it appears in your permit record.
You can cancel or reschedule through your ACA account. If the portal does not allow the change you need, contact Building & Safety at (562) 904-7142.
Before the inspector arrives
- Have the approved construction plans available at the job site.
- Keep work requiring inspection visible and accessible.
- Do not cover framing, reinforcement, wiring, plumbing or other regulated work before its required inspection.
- Make sure the inspector can safely access the work area.
- Check your permit/job card to ensure you requested the correct inspection stage.
Business-license inspections work differently
Business-license inspections can be arranged through Building & Safety rather than the normal construction-inspection workflow. The City asks businesses to be ready to open with furniture and fixtures in place and to provide the assigned BUS-XX-XXXXX number, business address and contact information.
How to Search a Downey Permit or Inspection Record
You can use Accela even when your goal is simply to research an existing record.
Micro-step: search by permit, address or parcel
- Open the Downey Building record search.
- For the cleanest result, enter the permit number, property address or parcel number.
- Avoid filling every search field at once; begin with one strong identifier.
- Open the matching record and confirm the project address before relying on it.
- Review the available application, permit and inspection information.
- Sign in if the action you need is limited to the applicant or account holder.
The portal also provides searches using date ranges and contractor information.
What if an old permit does not appear online?
An empty Accela result does not necessarily prove that no historical permit exists. The City’s public-record process specifically includes building permits among the records that can be requested. If you are researching an older property, contact the City with the address, approximate construction date and any permit number you already know.
How Long Are Downey Applications and Permits Valid?
| Record | Downey’s published time limit | What to do |
|---|---|---|
| Plan-check application | Generally considered abandoned after 180 days without good-faith progress or permit issuance | Request an eligible extension before expiration if necessary. |
| Issued building permit | Can become invalid if work is not commenced within 12 months | Begin permitted work and maintain required inspection progress. |
| Work after construction begins | A permit can become invalid after 180 days of abandonment | Do not allow the project to sit inactive without checking extension requirements. |
Special rules can apply to permits resulting from code-enforcement actions. If your application or permit is approaching expiration, contact the Building Division before the deadline rather than trying to restore an expired record afterward.
Building Codes Used in Downey in 2026
New 2026 projects are generally reviewed under the 2025 California Building Standards Code, which became effective statewide on January 1, 2026, together with applicable City of Downey amendments and project-specific requirements.
The City’s Building & Safety page identifies the current California Building, Residential, Plumbing, Mechanical, Electrical, Green Building Standards, Energy and Fire codes among the key adopted code resources.
For a simple overview of the statewide code cycle, see our California Building Code 2026 guide. Local Downey requirements still control the final project review.
Downey Construction Hours
For construction on private property located within 500 feet of a residential use, Downey’s published guidance limits construction to 7:00 AM–7:00 PM Monday through Saturday and prohibits that construction on Sundays and federal holidays.
Different rules can apply to construction outside that situation. If noise, weekend work or unusually early/late work is part of your project, verify the applicable Downey Municipal Code requirements before scheduling crews.
A Practical Downey Permit Checklist
- Confirm the property is actually inside City of Downey jurisdiction.
- Define exactly what you are building, replacing or altering.
- Check Planning first when setbacks, use, lot coverage or building size may change.
- Use the City’s current project handout rather than an old saved form.
- Prepare the site plan and construction documents required for your project.
- Create your Downey Accela account.
- Submit the application and plans electronically.
- Save your Accela record number.
- Respond to plan-check corrections completely rather than uploading partial revisions.
- Pay current permit and review fees after they are assessed.
- Download and retain approved plans.
- Keep approved plans at the job site.
- Request each required inspection before covering the work.
- Resolve correction notices before requesting the next dependent inspection.
- Complete final inspections and required outside-agency approvals before treating the project as complete.
Downey Building Department FAQs
1. Where is the Downey Building Department?
The City of Downey Building & Safety Division is on the first floor of Downey City Hall at 11111 Brookshire Avenue, Downey, CA 90241. The Building & Safety phone number is (562) 904-7142.
2. Can I apply for a Downey building permit online?
Yes. Downey uses Accela Citizen Access for building permit applications and electronic plan submissions. As of July 1, 2026, new permit applications and plans are submitted through the City’s online process.
3. How do I schedule a building inspection in Downey?
Sign in to the Downey Accela portal, open your building permit record, choose the required inspection type and select an available date. Requests submitted before 3:00 PM are generally eligible for the next available business day when capacity is available.
4. Does Downey perform building inspections on Friday?
No. The City’s current schedule provides building inspection service Monday through Thursday. City Hall is closed Friday under Downey’s current 4/10 schedule.
5. Do I need a permit for a 120-square-foot shed in Downey?
A one-story detached tool shed, storage shed, playhouse or similar accessory structure that does not exceed 120 square feet can be exempt from a building permit. Planning still needs to determine whether its location meets zoning and setback rules, and electrical, plumbing or mechanical installations require the applicable permits.
6. Do I need a permit for a block wall in Downey?
The City’s guidance says a wall or fence up to 42 inches high can be exempt from the building-permit requirement. Planning and possibly Engineering review can still apply. A wall or fence over 42 inches generally requires Building Division permitting in addition to other required approvals.
7. How much does a Downey building permit cost?
There is no single flat fee. Building and plan-check fees depend on the project’s valuation, size, complexity and required reviews. Planning, Engineering, Fire and other agency charges may also apply. Use Downey’s current fiscal-year fee schedule rather than an older downloaded copy.
8. Can a homeowner pull their own permit in Downey?
An eligible property owner living in a single-family residence can obtain an owner-builder permit after completing the required owner-builder documentation. Commercial, industrial and multi-family projects are generally issued to appropriately licensed California contractors.
9. How can I check a Downey building permit by address?
Open the City’s Accela Building record search, enter the street address and open the matching result. The search also supports permit numbers, parcel numbers, contractor information and date ranges.
10. Which building code applies in Downey in 2026?
New 2026 applications generally use the 2025 California Building Standards Code, effective January 1, 2026, together with Downey’s adopted local amendments and any project-specific planning, fire, energy or other requirements.
Before You Submit
The easiest way to avoid permit delays in Downey is to solve the basic questions before uploading plans: confirm jurisdiction, confirm zoning, define the project accurately, use the current City handouts and submit a complete electronic package through Accela.
For a property-specific decision, use the City’s official Building & Safety Division and call (562) 904-7142. Have your address and project description ready so staff can give you an answer tied to the actual property rather than a general example.
Information reviewed for 2026: City procedures, office schedule, electronic plan submittal, inspection scheduling, permit exemptions, current code cycle and fee guidance can change. Always use the live City page when taking the final permit or inspection action.