ADU Design & Blueprints in North Hollywood, CA

ADU Design & Blueprints in North Hollywood, CA

ADU Design & Permitting in North Hollywood means producing a permit-ready drawing set – site plan, floor plans, elevations, sections, and structural details – that the Los Angeles Department of Building and Safety will accept for plan check on the first submission. Most projects take four to eight weeks from initial site measure to a complete set ready for submittal. At Ellery ADU Studio, every design engagement is quoted with a written price before any work begins, per Haven Standard Clause 1, so you know the full drawing fee on day one, not after the permit set is halfway finished.

We’ve been producing ADU drawings in the San Fernando Valley since 2015 – the same year California began loosening the state’s ADU permitting rules and Los Angeles started adapting its local ordinances in response. In the decade since, our studio has designed, permitted, and built over 900 ADUs, every one with a written price upfront and a documented photo record at each project milestone. If you’re evaluating options or already have a written estimate from another firm, call us at (424) 407-8266 for a free second opinion before you sign anything.

This page covers the ADU Design & Blueprints sub-service specifically. For a full picture of how drawings fit into the permitting process, see our ADU Design & Permitting in North Hollywood page, which walks through plan check, corrections, and the path to a valid building permit.

When You Need ADU Design & Blueprints

• You own a North Hollywood lot and want to add a detached ADU. Before a shovel touches the ground, the city requires a stamped architectural and structural drawing set. Without it, there is no permit; without a permit, there is no legal unit to rent or sell against.
• Your garage conversion idea has stalled because no one will give you a real set of drawings. This is common in North Hollywood, where older 1940s and 1950s garages along streets like Vanowen and Oxnard often have non-conforming setbacks or undersized slabs that need to be documented and addressed before a conversion can move forward.
• A contractor told you the drawings would be “simple” and quoted you a lump sum with no design deliverable listed. That’s a gap. If the drawings aren’t itemized in the contract, you don’t own them – and if the contractor walks, you have nothing to take to another builder or to the city.
• You’re financing an ADU through a construction loan or a HELOC and the lender requires stamped plans. Banks lending on ADU construction routinely ask for a permit-ready drawing set before releasing funds. A rough sketch or a 3D rendering won’t satisfy a lender’s draw requirements.
• You’ve been told your lot has a setback or height issue and you need drawings that address it directly. North Hollywood parcels east of Lankershim and in the NoHo Arts District occasionally run into rear-yard setback constraints under LAMC Section 12.21 that require the design to pull the unit forward or reduce the footprint – something that has to be shown on paper before a variance discussion can even start.
• You’re considering a prefab or modular unit and aren’t sure how site-specific drawings interact with the manufacturer’s plans. Brands like Abodu and Cover provide their own manufacturing drawings, but a site-specific set – showing the foundation, utility connections, grading, and zoning compliance – still has to be produced locally and submitted to LADBS.

Our ADU Design & Blueprints Process

1. Written Quote Before Anything Else

   Before we measure, sketch, or open a drawing file, you receive a written price for the complete design scope. This isn’t a ballpark – it’s a line-item quote covering the site plan, floor plans, exterior elevations, building sections, structural plans, Title 24 energy compliance, and any specialty drawings your lot requires (grading plan, soils report coordination, fire-sprinkler plan if triggered). Haven Standard Clause 1 requires this in writing, and we don’t start without it signed. The design fee for a North Hollywood ADU project typically runs $8,500 to $18,000 depending on unit size, lot complexity, and whether structural engineering is straightforward or requires a full lateral analysis.

2. Site Measure and Existing Conditions Survey

   We visit the property, measure every relevant dimension, and document existing conditions with photographs. You receive the photo record from that visit – not a summary, the actual images with annotations. For North Hollywood properties, this step almost always turns up something worth noting before design begins: a fence that encroaches on the required setback, a gas meter in a location that conflicts with the proposed ADU footprint, or a grade change that will affect foundation depth and cost. We’d rather find it in week one than in week six during plan check.

3. Schematic Design and Client Review

   We produce a schematic floor plan and a basic site plan showing the proposed ADU in relation to the main house, property lines, easements, and utility connections. You review it. We explain the HOA & Zoning Compliance constraints that shaped the design – setback distances, height limits, lot coverage maximums under LAMC – so the decisions on the page make sense to you, not just to us. Changes at this stage are inexpensive. Changes after the structural drawings are complete are not.

4. Design Development and Structural Coordination

   Once the schematic is approved, we develop full architectural drawings and coordinate with our structural engineer. For standard wood-frame detached ADUs in North Hollywood, structural design is usually straightforward. For concrete-slab garage conversions where the existing slab is thinner than four inches, or for two-story units, the structural scope expands and that cost is in the written quote before work begins. We also run the Title 24 energy compliance calculations at this stage – California’s energy code has tightened significantly since 2019, and ADUs over 500 square feet now trigger requirements for solar-ready wiring and specific insulation values that affect both design decisions and material specs.

5. Permit Set Production and Internal Review

   The completed drawing set goes through an internal review against the current LADBS ADU checklist before we submit. Los Angeles has a specific pre-screening checklist for ADU projects, and missing a single required sheet – a separate utility plan, a roof plan with drainage, a fully dimensioned site plan – sends the application back without entering plan check, adding four to six weeks to your timeline. Our internal review catches those gaps. The permit set you receive is the same set we submit, and you own it outright.

6. Submittal, Plan Check, and Corrections

   We submit to LADBS on your behalf and manage the plan check correspondence. Los Angeles currently processes most ADU applications through the Express Permit program or standard plan check, with typical first-correction turnaround running six to twelve weeks depending on LADBS workload. When corrections come back, we respond directly. Under our one-contract design-build model, there’s no designer and builder pointing at each other over a correction that touches both the drawings and the field work – we own both sides of the answer.

ADU Design & Blueprints Pricing in North Hollywood

ADU design and blueprint costs in North Hollywood typically fall in the ranges below. Every number below is paired with a written quote – you will see these line items on paper before we begin, not as an after-the-fact invoice.

A few things affect where a North Hollywood project lands within these ranges:

• Lot topography. Flat lots in the North Hollywood flats between Burbank Boulevard and Oxnard Street are straightforward. Hillside-adjacent parcels near the Tujunga Wash or north of Roscoe have grade changes that add grading plan requirements and sometimes a soils report – both of which are documented in your written quote as separate line items.
• Existing structure condition. For garage conversions, if the existing structure has non-compliant framing or the slab is under four inches, the drawing set has to show the remediation. That adds pages and engineering time.
• Fire sprinkler trigger. Under California’s 2022 Building Code, some ADU configurations – particularly new detached units over 500 square feet on lots with certain access conditions – trigger a fire sprinkler plan. When that applies, it’s a separate plan set and a separate fee, itemized in your quote.
• Title 24 compliance complexity. Larger units with high-performance envelope requirements, battery storage, or heat pump HVAC systems require more detailed energy compliance documentation. James Hardie fiber cement siding, for instance, contributes to thermal performance in a way that affects the energy calc – a small detail that gets priced honestly upfront rather than absorbed silently.

If you already have a written estimate from another design firm or a contractor, call us at (424) 407-8266 for a free second opinion. We’ll tell you what’s in the set, what’s missing, and what the number should look like for a North Hollywood lot. No obligation, no pressure – just a plain reading of what you have in hand.

FAQs – ADU Design & Blueprints in North Hollywood

How long does it take to get ADU blueprints approved in North Hollywood?

From initial site measure to an approved permit, most North Hollywood ADU projects take five to nine months total – roughly four to eight weeks for drawing production, then six to twelve weeks in LADBS plan check, plus time for any correction rounds. The fastest path through plan check is a complete, accurate submittal on the first attempt; a missing sheet or an unresolved setback note can add two to three months. Under our process, the internal review before submittal is specifically designed to catch those issues first. Call (424) 407-8266 with your lot address and we can give you a more specific timeline estimate based on current LADBS processing times.

What drawings does Los Angeles actually require for an ADU permit submittal?

LADBS requires a site plan with dimensioned setbacks and utility locations, a floor plan with room labels and dimensions, exterior elevations on all four sides, at least one building section, a roof plan, a foundation plan with structural details, Title 24 energy compliance documentation, and a separate electrical plan. Depending on the project, a grading plan, a soils report, a fire sprinkler plan, or a demolition plan may also be required. The LADBS ADU checklist is updated periodically – the version current as of early 2026 added explicit requirements for solar-ready conduit labeling on new detached units. Our permit sets are built to the current checklist, not a version from two years ago.

Can I use a prefab ADU in North Hollywood and still need custom blueprints?

Yes. Prefab and modular units – including brands like Abodu and Cover – come with the manufacturer’s own structural and unit drawings, but those drawings don’t cover your specific lot. LADBS still requires a site-specific drawing set showing the foundation design, utility connections, grading, and zoning compliance for your parcel. We coordinate that site set with the manufacturer’s drawings so the two packages work together in plan check. The site-specific drawing fee for a prefab unit in North Hollywood typically runs $7,500 to $12,000, and it’s quoted in writing before we start. Call (424) 407-8266 if you’re already in conversation with a prefab manufacturer – we can review what they’ve given you and tell you exactly what the site set needs to include.

Do I own the blueprints once Ellery produces them?

Yes. The drawing set we produce for your project is yours at the conclusion of the design phase. You receive both the PDF permit set and, under our design-build contract, the native files are retained by Ellery for the duration of the build so we can issue revision sets quickly during construction without starting from scratch. If you choose not to proceed with construction through Ellery, you take your drawing set with you – it belongs to you. This is documented in the contract before work begins, consistent with Haven Standard Clause 1 on written, upfront scope. For questions about what’s included in your specific drawing deliverable, call (424) 407-8266.

Why Ellery ADU Studio for North Hollywood Blueprints

For ADU Design & Permitting Near Me in North Hollywood, CA, know that this is not a generic Los Angeles neighborhood when it comes to ADU design. The zoning geography spans multiple lot types – RD1.5 lots near the Arts District, R1 lots in the flats east of Lankershim, and a handful of larger parcels near the Tujunga corridor that carry their own easement and flood-zone considerations. A drawing set that works on a flat R1 lot in Valley Village may need significant modification for a parcel two blocks north. We’ve been working this geography long enough to know which blocks trigger which issues before we open a drawing file.

Our ADU Design & Permitting in North Hollywood practice covers the full pipeline from drawings through permit issuance and construction. The design-build structure means the people who draw the plans are working alongside the people who build to them – so the drawings reflect what can actually be built at the quoted price, not what looks clean on paper. Under the 365-Day Done Right Promise, if the finished ADU is not built to the permitted drawings, we make it right, in writing, before the project starts.

Over 900 ADUs designed and built since 2015. Every one with a written price before work started. That’s the standard we hold ourselves to in North Hollywood, and it’s documented – not just claimed.

Key Takeaways

• ADU blueprints in North Hollywood require a full permit set: site plan, floor plans, elevations, structural, and Title 24 energy compliance at minimum.
• Design fees typically run $8,500 to $18,000 depending on unit type and lot complexity – every project gets a written, line-item quote before work begins.
• LADBS plan check currently adds six to twelve weeks to the timeline; a complete first submittal is the single biggest factor in keeping that number at the low end.
• Prefab units (Abodu, Cover) still require a site-specific drawing set in addition to the manufacturer’s drawings – typically $7,500 to $12,000.
• You own the completed drawing set. Under our design-build contract, the scope and deliverables are documented in writing before any work begins.
• A free second opinion on any written estimate is available – call (424) 407-8266.

Start with a Written Quote

If you’re ready to move from idea to a permit-ready drawing set, call Ellery ADU Studio North Hollywood at (424) 407-8266. A live person answers – no voicemail queue, no callback window. We’ll review your lot, describe what your drawing set will include, and give you a written price before anything else happens. If you already have an estimate in hand, bring it – the free second opinion is there specifically for that situation.

Written by Nadia Ellery, Owner at Ellery ADU Studio North Hollywood, serving North Hollywood.