Choosing an ADU contractor in Los Angeles involves more than comparing estimates. Before hiring, decide which ADU format suits the property, identify who will manage permits and approvals, and confirm exactly what the proposal includes. A credible contractor should make responsibilities, payment terms, changes, and communication clear before construction begins.
Requirements vary by city and county, so general guidance is only a starting point. Local authorities must confirm the rules for a specific property.
Quick summary
- Compare detached, attached, junior, and garage-conversion ADUs based on the property and intended use.
- Ask who handles design coordination, permits, plan review, inspections, utilities, and corrections.
- Require a written scope covering construction, finishes, exclusions, payments, and change orders.
- California Contractors State License Board guidance says an ADU contract must be written, the down payment cannot exceed $1,000, and progress payments should reflect completed work or delivered materials.
- Confirm local feasibility before accepting a proposal or assuming approval.
Choose the ADU format before comparing contractors
The ADU type affects design questions, access, utilities, construction scope, and site constraints. Choosing a preferred format first gives contractors a consistent brief and makes proposals easier to compare.
Common options include detached new construction, an attached addition, a junior ADU, and a garage-to-ADU conversion. JR07 Development states that it handles these formats, including two-story additions, with support for permits, design, and construction. Homeowners can review its ADU construction services before preparing consultation questions.
Define the intended use as well. A unit for a family member may prioritize accessibility and privacy, while a rental may require a different layout, entry, storage plan, or durability standard.
ADU options: what each one requires you to clarify
| ADU format | Key question | Details to clarify |
|---|---|---|
| Detached ADU | Can a separate structure fit the site? | Discuss placement, access, foundation, utility routing, privacy, drainage, and site work. |
| Attached ADU | How will it connect to the existing home? | Ask about structural connections, roof transitions, finishes, shared systems, and disruption. |
| Junior ADU | How will the smaller unit relate to the residence? | Clarify the layout, entry, shared areas, privacy, and applicable approvals. |
| Garage conversion | Can the existing garage become suitable living space? | Ask about floor levels, insulation, openings, moisture, electrical, plumbing, and structural work. |
A garage conversion is not automatically the simplest option. Existing conditions may reduce some work but can also reveal unknown problems that need investigation before the scope is final.
Verify local feasibility and permitting responsibility
“Los Angeles” can refer to several permitting jurisdictions. The applicable city or county may affect plan review, approvals, inspections, and other requirements. Ask which authority has jurisdiction over the property and how that will be confirmed.
Have the contractor identify who handles site review, plan preparation, permit applications, plan-check responses, inspections, utility coordination, and closeout documentation. Also ask what happens if the authority requests revisions or the initial design cannot proceed.
Los Angeles County Planning provides pre-approved ADU plans to help guide homeowners through the county review process. That resource may not apply to every property, so verify its relevance. You can also review Los Angeles County construction services while confirming local requirements independently.
Vet the contractor before relying on a proposal
- Confirm licensing and insurance. Request license information and current insurance documentation, then verify the details through appropriate state resources.
- Ask about relevant ADU work. Request comparable examples for detached units, additions, or garage conversions. A general remodeling portfolio does not prove that every ADU task is included.
- Identify the project manager. Ask who coordinates designers, trades, inspections, corrections, and regular updates.
- Test the answers. A reliable contractor should acknowledge unknowns and explain how they will be investigated rather than promise approval or a fixed outcome without reviewing the property.
- Compare details, not just totals. Proposals may differ in site work, design coordination, fixtures, finishes, cleanup, and exclusions.
JR07 Development states that it is a licensed, bonded, and insured general contractor with more than 25 years of experience and over 500 completed projects. These claims are useful comparison points, but they do not replace project-specific questions.
Check that the scope is specific enough to compare
A useful proposal should show what is included, excluded, and dependent on design or agency review. Ask whether it addresses demolition, site preparation, foundation, framing, roofing, windows, insulation, drywall, electrical, plumbing, heating and cooling, finishes, appliances, inspections, and cleanup.
Finish descriptions also matter. Terms such as “standard fixtures,” “quality cabinets,” or “countertop allowance” may be too vague. Ask which product category is assumed, when selections are due, who installs them, and how costs change if a selection exceeds an allowance.
Clarify whether design services are included or coordinated separately. The proposal should identify who prepares drawings, responds to technical comments, and revises documents.
Review the written contract and payment terms
The California Contractors State License Board states that an ADU home improvement contract must be written. Its guidance also says the down payment cannot exceed $1,000 and that progress payments must reflect work completed or materials delivered. Read the CSLB ADU contract and payment guidance before signing.
Ask the contractor to explain each payment milestone and how completion will be documented. Confirm how approved changes affect price and schedule. Do not make payments you cannot connect to the agreed scope or delivered materials.
Before signing, check the parties’ legal names, property address, project description, price or pricing method, exclusions, payment schedule, permit responsibilities, warranty language, insurance information, and dispute provisions. Obtain professional advice if the terms are unclear.
Control change orders, delays, and communication gaps
Existing conditions, agency revisions, unavailable materials, or owner-requested changes can alter an ADU project. The key protection is documenting the reason, cost, schedule effect, and approval for every change.
Ask how change orders are issued, who approves them, whether work can begin before written approval, and how substituted materials or inspection corrections are handled.
JR07 Development says it assigns a dedicated project manager to every project and emphasizes transparent pricing. Ask what that role includes, how often updates are provided, which communication channel is used, and how unresolved issues are escalated.
Where JR07 Development may fit the project
JR07 Development presents itself as a licensed, bonded, and insured general contractor based in Los Angeles. Its stated ADU services include detached, attached, junior, garage-conversion, and two-story ADUs, with support spanning permits, design, and construction.
The company also states that it serves Los Angeles, Orange, San Diego, and Riverside counties, assigns a dedicated project manager, and offers transparent pricing with no hidden fees. These capabilities may suit homeowners seeking coordinated delivery, but fit still depends on jurisdiction, feasibility, design needs, and the final written proposal.
Prepare for the first consultation
- Property address and likely permitting jurisdiction.
- Photos and details about the lot, home, garage, access, and utilities.
- Preferred ADU format, plus a second option if uncertain.
- Intended occupants or use, privacy goals, storage, and room needs.
- Known concerns about drainage, grading, structural conditions, or the garage.
- Inspiration images and finish preferences.
- Budget boundaries and decision priorities.
- Questions about permits, inspections, payments, changes, project management, and exclusions.
Ask what can be confirmed immediately and what requires site investigation, design, or agency review. This prevents an early conversation from being mistaken for final approval or a guaranteed price.
Frequently asked questions
Who is responsible for ADU permits in Los Angeles?
The contract should state who handles plan coordination, applications, plan-check responses, inspections, and closeout. Confirm the responsible city or county authority independently.
What should an ADU proposal include?
It should describe the format, design responsibilities, permitting tasks, construction work, finishes, allowances, exclusions, cleanup, payment milestones, changes, and communication expectations.
What should I verify before paying a deposit?
Verify the contractor, license, insurance, written contract, property address, scope, payment schedule, and change-order terms. CSLB guidance says the ADU down payment cannot exceed $1,000.
Is a garage conversion automatically simpler?
No. Floor levels, insulation, openings, utilities, moisture, and structural conditions must be evaluated before the scope is finalized.
Can one contractor handle design, permits, and construction?
Some contractors coordinate all three, but responsibilities vary. Ask who prepares plans, submits applications, answers comments, and manages construction, then put those duties in writing.
Choose clarity before construction begins
Select an ADU format based on the property and intended use, then choose a contractor whose scope, permits, payments, changes, and communication process are documented. Detached, attached, junior, and garage-conversion projects raise different questions, so headline prices alone are not enough for comparison.
For a free consultation about ADU construction in Los Angeles and throughout Southern California, contact JR07 Development with your property details, preferred format, and contractor questions.