Permit Application in San Bernardino, CA
Getting a permit application approved by the City of San Bernardino’s Development Services Department is the single step that separates a legal, lendable ADU from an unpermitted structure that complicates your title and your taxes. At Ellery ADU Studio San Bernardino, permit application is not a handoff to a third party – it is the core product we build in-house, on every project, under one written contract. If you’re at the point where you know you want an ADU but aren’t sure what the city actually needs from you, call us at (909) 359-6463 and a live person will pick up.
The permit application process in San Bernardino moves through the city’s Building and Safety Division, the Planning Division, and – depending on your parcel – the Fire Department plan check. Each of those stops has its own checklist, its own review timeline, and its own most common reason for rejection. We’ve been tracking those reasons since 2015, across more than 900 ADU projects, and that institutional knowledge is built directly into every permit set we produce. For the full picture of how permit application fits into the broader scope of drawings, site analysis, and construction, see our ADU Design & Permitting in San Bernardino page.
Every permit application Ellery produces is covered by a written price before any work begins – that’s Haven Standard, Clause 1, no exceptions. You’ll know the exact fee for drawings and permit coordination before we open a single file.
When You Need Permit Application
- You’re converting a garage in the Arrowhead Farms or Muscoy area and the city has flagged a non-conforming setback. San Bernardino’s older residential tracts often have garages built closer to the rear or side property line than current code allows – our permit set addresses this in the drawings so plan check doesn’t catch you cold.
- You received a stop-work notice or a code-enforcement complaint on an unpermitted structure. San Bernardino Building and Safety can require retroactive permitting or demolition. Ellery has navigated both paths and will tell you in writing which one applies to your parcel before any fees are collected.
- You’re adding a new detached ADU in a neighborhood like Del Rosa or Verdemont and you’re not sure whether your lot triggers a fire-flow requirement. Hillside and semi-rural parcels in San Bernardino sometimes require fire department review as a separate plan check layer – something many applicants don’t learn until they’re already in queue.
- You have a written quote from another contractor but the permit application was excluded from scope. This is common. Bring that estimate to us – the Free Second Opinion is exactly for this situation. We’ll show you line by line what a complete permit set costs and what it includes.
- You want to install a prefab or modular unit – such as a Mighty Buildings or Cover system – and you’re not sure whether the city will accept factory documentation in place of site-engineered drawings. San Bernardino has reviewed prefab submittals, but the documentation requirements are specific and vary by product. We’ve coordinated these submittals before and know what the plan checker will ask for on the first round.
- Your lender or title company has asked for proof that a planned ADU can be permitted before you refinance or close. A preliminary feasibility letter based on actual parcel data – zoning, lot size, existing square footage, utility capacity – is something we can produce in writing as part of the pre-application stage.
Our Permit Application Process
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Parcel-Level Feasibility Review
Before any drawings start, our Site Assessment pulls your Assessor Parcel Number records, zoning designation, and any recorded easements or deed restrictions from San Bernardino County’s GIS system. We cross-reference the city’s ADU ordinance – which was updated in alignment with California’s AB 68 and SB 9 framework – against your specific lot dimensions, existing square footage, and utility connections. You receive a written summary of what is buildable on your parcel and what the permit application will need to address. This is not a verbal conversation; it is a documented deliverable.
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Permit-Ready Drawing Set
Our in-house designers produce a full architectural and structural drawing set to San Bernardino Building and Safety’s current submission standards: site plan with dimensions and setback callouts, floor plan with egress windows and smoke detector locations, elevations, sections, foundation detail, and a Title 24 energy compliance report. For garage conversions, this set also includes a framing plan that shows how we’re handling the existing slab and any header or shear wall work the structural engineer requires. If you’re using a prefab system like Dvele or Mighty Buildings, the factory engineering package gets integrated into this set rather than submitted as a separate, possibly conflicting document.
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City Submittal and Fee Payment Coordination
San Bernardino Development Services accepts permit applications through its online portal and, for certain project types, over the counter at City Hall on 3rd Street. We handle the electronic submission, confirm receipt, and pay city fees on your behalf – then provide you with a receipt and the assigned permit number the same day it’s issued. City plan check fees for ADUs in San Bernardino typically run in the $1,200-$2,800 range depending on project valuation; that number is an estimate of the city’s fee, and it will appear as a line item in your written project quote before we submit anything.
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Plan Check Response and Correction Letters
Most first-round plan check submissions receive a correction letter – a list of questions or required revisions from the city’s plan checker. In San Bernardino, first-round correction letters on ADU projects have commonly cited items like insufficient ventilation calculations, missing egress dimensions, and unclear utility separation details. We track these patterns project by project. When a correction letter comes in, we respond in writing within the city’s required resubmittal window, revise the drawings as needed, and resubmit. You receive a copy of every correction letter and every response we send – documented, not summarized.
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Permit Issuance and Pre-Construction Handoff
When the city issues the approved permit, we deliver the stamped drawing set to your job site and to our construction team simultaneously. Because Ellery is a design-build studio, the people who produced the permit set and the people who build from it are under the same contract and the same roof – there is no translation layer where something gets lost between the designer’s intent and the builder’s interpretation. Under the 365-Day Done Right Promise, if the finished ADU is not built to those permitted drawings, we make it right in writing.
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Inspection Scheduling and Final Sign-Off
San Bernardino Building and Safety requires inspections at framing, rough electrical, rough plumbing, insulation, and final. We schedule each inspection, have a crew lead on site for every visit, and maintain a documented photo record at each stage – photographs of what was inspected, what passed, and what the inspector noted. At final inspection, you receive that complete photo record alongside the city’s Certificate of Occupancy. That documentation is yours to keep, share with a lender, or attach to a future listing disclosure.
Permit Application Pricing in San Bernardino
Permit application for an ADU in San Bernardino involves two distinct cost buckets: Ellery’s fee for producing the permit set and managing the process, and the City of San Bernardino’s plan check and permit fees. Both appear as separate line items in your written quote before any work begins – Haven Standard, Clause 1.
| Project Type | Ellery Permit Application Fee (Design + Coordination) | Typical City Plan Check & Permit Fees |
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| Junior ADU / Interior Conversion | $4,800 – $7,500 | $900 – $1,500 |
| Garage Conversion ADU | $6,500 – $10,000 | $1,200 – $2,000 |
| New Detached ADU (site-built) | $9,500 – $16,000 | $1,500 – $2,800 |
| Prefab / Modular ADU Coordination (e.g., Mighty Buildings, Cover) | $7,500 – $12,000 | $1,200 – $2,400 |
Several factors move costs within those ranges. Parcels in hillside zones near the Verdemont or Muscoy foothills sometimes require a soils report or geotechnical review – that is a third-party cost that we identify in the feasibility stage and flag before you commit. Lots with utility easements crossing the build footprint may require a separate encroachment review. Projects that involve a non-conforming structure requiring a setback variance add a planning entitlement step that has its own city fee schedule, typically $500-$1,800 depending on the variance type.
If you already have a written estimate from another designer or contractor that excludes permit application or lists it as a future add-on, bring it to us. The Free Second Opinion is available at no charge and takes about 20 minutes – we’ll show you what a complete permit application scope looks like and how the numbers compare.
To get a written quote specific to your San Bernardino parcel, call (909) 359-6463. A live person answers. No voicemail queue, no callback promise.
FAQs – Permit Application in San Bernardino
How long does ADU permit approval take in San Bernardino?
San Bernardino’s Building and Safety Division is required under California law to complete ADU plan check within 60 days of a complete application submission. In practice, projects with a clean first submission – no missing documents, no ambiguous setback callouts, no incomplete Title 24 Energy Compliance reports – are moving through in the 35-50 day range as of early 2026. Projects that receive a correction letter and require resubmittal add 2-4 weeks depending on the scope of revisions. The fastest path through plan check is a permit set that anticipates the correction letter before it’s written – which is what our 900-plus project history allows us to do. Call (909) 359-6463 for a timeline estimate specific to your project type and parcel.
Does San Bernardino require owner-occupancy to build an ADU?
No. California law has prohibited cities from requiring owner-occupancy for ADU permits since January 2023, and San Bernardino’s ADU ordinance reflects that change. You can own the property as an investment parcel without living on site and still obtain an ADU permit. The city can still apply standard zoning requirements – setbacks, height limits, lot coverage – but owner-occupancy status is not one of them. If a previous conversation with a city counter rep suggested otherwise, bring your parcel address and we’ll pull the current ordinance language for you in writing.
What’s the most common reason ADU permit applications get rejected in San Bernardino?
Incomplete or inconsistent documentation is the most frequent cause of correction letters in San Bernardino ADU plan check – specifically, site plans that don’t dimensionally match the floor plan, missing egress window size callouts, and Title 24 energy reports that reference a different square footage than the drawings. A second common trigger is fire department plan check for projects on parcels in the Very High Fire Hazard Severity Zone designations that cover portions of the city’s northern neighborhoods. None of these are fatal to a project, but they each add time if they surface in a correction letter rather than being resolved in the drawing set. Our standard permit set checklist addresses all of these before submission. Call (909) 359-6463 for a straight answer on what your specific project is likely to face.
Can Ellery handle the permit application for a prefab ADU like a Mighty Buildings unit in San Bernardino?
Yes. Prefab ADU manufacturers – including Mighty Buildings and Cover – provide a factory engineering package that documents compliance with California building code. What they don’t provide is the site-specific documentation San Bernardino requires: the site plan, utility connections, foundation design coordinated with local soil conditions, and the Title 24 report calibrated to the specific parcel’s orientation and climate zone. Ellery integrates the factory package into a complete site-specific permit set and submits it as a single coordinated application. This approach avoids the common failure mode where a homeowner submits the factory documents alone and gets a correction letter asking for all the site-level information anyway. For a written quote on prefab permit coordination, call (909) 359-6463.
Key Takeaways
- The City of San Bernardino must complete ADU plan check within 60 days of a complete submission under state law – a clean, complete permit set is the single biggest factor in hitting that window.
- Ellery’s permit application fee covers parcel feasibility review, full architectural and structural drawings, city submittal, correction letter response, and inspection coordination – all under one written price.
- City plan check and permit fees are a separate line item, typically $900-$2,800 depending on project type, and they appear in your written quote before any work starts.
- Prefab ADU systems from manufacturers like Mighty Buildings or Cover require site-specific drawings in addition to factory engineering packages – Ellery coordinates both under the same contract.
- Every Ellery project is covered by the 365-Day Done Right Promise: if the finished ADU doesn’t match the permitted drawings, it gets corrected in writing.
- A documented photo record accompanies every inspection – you receive evidence of what passed and what the inspector noted, not a verbal summary.
- The Free Second Opinion is available if you have a written estimate from another firm that excluded or underspecified permit application scope.
Ready to get a written price for your San Bernardino ADU permit application? Call (909) 359-6463 – a live person picks up, and we can discuss your parcel, your project type, and what a complete permit set will cost before any work begins. As part of our ADU Design & Permitting in San Bernardino practice, permit application is built into every project we take on – drawings, permit coordination, and construction under one written contract, one written price.
Written by Nadia Ellery, Owner at Ellery ADU Studio San Bernardino, serving San Bernardino since 2015.