01
Detached and backyard ADUs
A separate home with its own structure, enclosure, systems, utility connections, and relationship to the yard.
Detached ADU construction →
Local residential construction · Fullerton
Your local Fullerton ADU contractor.
We help Fullerton homeowners build detached ADUs, garage conversions, attached ADUs, and JADUs. We look at your house and yard, explain the work involved, and put the agreed work in writing before construction begins.
10+ yearsof residential construction experience
Who
Fullerton homeowners considering an accessory dwelling unit.
WhatProperty review, scope development, pre-submittal coordination, and construction planning.
What we build
Four site-built ADU paths.
Each project type changes the work in the field. We help identify what fits the property and what the construction proposal must include.
02
Garage conversions
Turn an existing shell into living space after checking slab, moisture, structure, openings, utilities, and permit history.
Garage conversion contractor →03
Attached ADUs
Add a new unit against the home with coordinated foundations, framing, weatherproofing, services, and occupied-house protection.
Attached ADU construction →04
JADUs
Create a compact unit within the home after reviewing space, facilities, privacy, systems, and current requirements.
JADU construction →Field guide 01–06
Choose the question before the floor plan.
Use these guides to check the rules, compare ADU types, understand a garage conversion, prepare a budget, and review an existing unit. Open the page that matches the decision you face now.
01
Requirements
Read the lot, existing structures, access, utilities, and the current local standards before choosing a plan.
Open this field note →02
Permits & plan check
Organize a coordinated package around the City’s current building code and submittal expectations.
Open this field note →03
Garage conversion
Test the permitted shell, slab, moisture, fire separation, utilities, and parking assumptions.
Open this field note →04
ADU types
Compare detached, attached, conversion, and junior units by property fit—not by a generic template.
Open this field note →05
Cost & scope
Separate design, City and agency items, site work, construction, finishes, and contingencies.
Open this field note →06
Existing ADU path
Understand the City’s AB 2533 materials for units built before January 1, 2020.
Open this field note →Current-code checkpoint
January 1, 2026 changed the code baseline.
Fullerton’s current building-codes page says the 2025 California codes, with local amendments, apply to projects submitted on or after January 1, 2026. Confirm the edition and project conditions before relying on older checklists.
Existing conditions
Start with property records, the legal status of existing structures, and a measured understanding of the site.
Utility and access assumptions
Trace likely sewer, water, electrical, drainage, and construction-access paths before locking the layout.
Coordinated scope
Make the drawings, specifications, allowances, exclusions, and proposal milestones describe the same project.
Plan for daily use
Make the square footage work harder.
We ask how the resident will cook, sleep, store belongings, enter the home, use the yard, and live alongside the main household. Those answers shape a better floor plan and a clearer finish budget.
The work behind the room
Experience shows up before the walls are open.
Our 10+ years of residential construction experience guides the questions we ask before work starts and the way responsibilities are carried through the build.
A
Read the site
Access, utilities, drainage, existing structures, grade, and occupied-house needs affect the construction method.
Site and utility planning →B
Define the proposal
Drawings, allowances, exclusions, selections, inspections, repair, and work by others should describe one project.
Fullerton ADU cost and scope →C
Coordinate the build
Owners need clear decisions, documented changes, upcoming inspections, and a realistic sequence around field conditions.
How we work →D
Verify the team
Ask for the business record, insurance, references, comparable scope, and who owns each design and construction responsibility.
Hire a Fullerton ADU contractor →Built around Fullerton properties
The neighborhood changes the first questions.
Hillside access, preservation review, planned-district documents, older garages, shared conditions, and utility routes do not show up the same way across the city. Our area notes organize those questions without pretending a neighborhood name decides eligibility.
Current public sources
City and California pages stay close to regulatory claims so owners can verify what applies now.
Address-specific review
The parcel, records, title, existing construction, and utility conditions remain the project basis.
Call-first contact
Call (714) 515-6245 with the address, goal, photos, and the questions you need answered.
Ready to discuss the property?
Call with what you know.
You do not need a finished plan. Bring the address, intended use, photos, and any records or drawings you have. We will help identify what needs attention before construction pricing.