Skip to main content
Avorino
Custom home — kitchen island toward the sliders, Aliso Viejo, Avorino
Luxury custom home — built-in cabinetry and hillside view, Aliso Viejo, Avorino

Custom homes · Fullerton

Built by Avorino · Luxury Custom Home, Aliso Viejo

Custom Homes in Fullerton

Hillside custom homes in Fullerton.

Hillside-engineered custom homes across Fullerton — soils, retaining, slope stability, and drainage carried in-house alongside the architecture. Designed for the lot you actually have, not the lot a stock plan assumes.

01 / Fullerton · Orange County37 Orange County cities & communities · B-#1107538Scroll to explore ↓

Talk To Us

Free Fullerton custom home estimate.

Your name and number is enough to start — Avorino follows up with a written scope for your Fullerton project.

Get a free estimate Or call (714) 900-3676

  • Coverage Fullerton, OC
  • Typical range $1.1M – $4M+
  • Build window 14 – 26+ months

Photographs: Luxury Custom Home, Aliso Viejo, built by Avorino.

Luxury custom home — built-in cabinetry and hillside view, Aliso Viejo, Avorino

Fullerton Custom Home Construction

What an Avorino custom home in Fullerton actually involves.

Downtown Fullerton is a well-preserved historic core with 23 buildings on the National Register (the Chapman Building, the 1899 Dean Block, the 1930 Santa Fe depot); Raymond Hills mixes vintage Craftsman and Spanish homes with mid-century modern and larger hillside estates, while Sunny Hills — built out 1960-90 on former citrus groves — carries midcentury ranch and split-level homes on larger lots. Avorino builds throughout Raymond Hills, Sunny Hills, Amerige Heights, Downtown Fullerton / SOCO, and the historic Depot district. Avorino runs hillside custom homes end-to-end. Soils + geotechnical engineering and retaining-wall design land in the package before drawings finalize, so foundation specs are sized against the actual soils report — not the flat-lot template.7+ years of Orange County experience · 150+ completed projects · 4.8 Yelp average across 35+ reviews.

Get a free estimate
Typical range
$1.1M – $4M+
Hillside custom homes — soils, retaining, drainage, and slope-stability engineering carried in-house alongside finish carpentry.
Build window
14 – 26+ months
Hillside soils + retaining engineering land in the design phase so plan-check is single-round wherever possible.
License
California General-B #1107538
Warranty
Tiered · 1yr fit & finish · 4yr systems · 10yr structural
Service area
Fullerton + 36 other Orange County cities and communities
Fullerton residential permitting at a glance.
  1. 01Zoning + setbacks
  2. 02Plan check + permitting jurisdiction
  3. 03Engineering required up-front
  4. 04Code + utility requirements

Custom Homes · Fullerton

Why Avorino in Fullerton.

Custom and high-end rebuild activity concentrates on elevated Raymond Hills canyon and view lots (hillside grading and drainage engineering) and larger Sunny Hills parcels; downtown and Fullerton Heritage-listed properties face preservation review for exterior changes. Avorino operates in Orange County under General-B License #1107538, with 7+ years of OC experience and a 4.8-star Yelp average across 35+ reviews. Architecture, structural engineering, permitting, construction, and the tiered warranty all sit under one roof — one accountable builder from first conversation through final handover.

  • Architecture + engineering, in-house

    Avorino's design-build model means architecture, structural engineering, Title 24 calculations, and soils (where Fullerton lots require it) all sit under one roof. You sign once at the start; the coordination across disciplines runs through one office.

  • Fullerton permitting, handled

    Submittal, plan-check comments, resubmittal, and final inspection all run through one office. Avorino builds drawings against how Fullerton handles slope engineering, retaining wall design, and drainage built into the foundation phase, not bolted on after, so the set walks in ready for what the city checks.

  • Material + finish selections

    Cabinetry, stone, tile, paint, fixtures, appliances — every line item picked against a written allowance log so the bid doesn't drift during construction. Fullerton clients see the finish board before demolition starts.

  • Tiered warranty

    Every Avorino build ships with a tiered construction warranty: 1-year fit & finish (paint, trim, mirrors, flooring, cabinets, countertops), 4-year systems (plumbing, electrical, HVAC), 10-year structural. Same Avorino team you started with takes the warranty call.

@avorinoconstruction

Avorino builds across Orange County.

No published Fullerton custom home yet — here's recent Avorino work from across Orange County.

“These are the best people in the business. I used Avorino to build my own ADU. They beat every single price I got and on top of that did an excellent job finishing it in no time. Truly the best of the best — highly recommended.”
Shahin S. · Detached ADU · Orange County · 2023
  1. Custom home — family room with fireplace and media wall, Aliso Viejo, Avorino
    Luxury Custom Home · Aliso Viejo
  2. Hillside custom home, Laguna Niguel, Avorino
    Hillside Custom Home · Laguna Niguel
  3. Custom pool house, San Juan Capistrano, Avorino
    Custom Pool House (Ground Up) · San Juan Capistrano
  4. Luxury custom home, Aliso Viejo, Avorino
    Luxury Custom Home · Aliso Viejo
  5. Pool house living and great room, San Juan Capistrano, Avorino
    Custom Pool House (Ground Up) · San Juan Capistrano
  6. Luxury custom home, Aliso Viejo, Avorino
    Luxury Custom Home · Aliso Viejo

What we build in Fullerton (4)

Four custom homes Avorino delivers in Fullerton.

Tell us about your Fullerton custom home.
AVORINO / SPATIAL STUDIESFIG. 01
Hillside customConcept only · cutaway walls lowered to reveal the layout

01 Hillside custom

Soils + geotechnical engineering, retaining design, view-line preservation — landed up-front.

  • Geotech up-front
  • Retaining design
  • View-line work

02 Modern hillside

Cantilevered volumes, hillside structural engineering carried in-house.

  • Cantilever engineering
  • Slope stability
  • View framing

03 Transitional traditional

Classical proportions with restrained ornament. Finish carpentry the contemporary palette can't match.

  • Classical proportions
  • Custom millwork
  • Restrained ornament

04 Major remodel

Whole-house gut renovations that read as new construction when tear-down is impractical.

  • Gut + reframe
  • Selective preservation
  • mechanical, electrical, and plumbing modernization

Built by Avorino · San Juan Capistrano

Watch it come together.

A time-lapse visualization of the pool-house build, from cleared lot to the finished pool house, outside and in.

Time-lapse visualization of an Avorino pool-house build in San Juan Capistrano, from the empty lot to the finished exterior and great room
  1. 01 / 08The lotCleared and staked for the foundation.
  2. 02 / 08The slabForms set and concrete poured.
  3. 03 / 08The frameWalls and rafters rise from the slab.
  4. 04 / 08EnclosedSheathing wraps the structure.
  5. 05 / 08Rough-inWiring and plumbing run through the open walls.
  6. 06 / 08DrywallWalls and the vaulted ceiling closed in.
  7. 07 / 08BuiltThe finished pool house, outside.
  8. 08 / 08FinishedThe great room and kitchen, complete.

Fullerton regulations

Fullerton residential permitting at a glance.

A working summary of the rules Avorino designs against on every Fullerton project — submittal, comment rounds, and inspections run in one office and resolved in writing.

AVORINO / SPATIAL STUDIESFIG. 01
Spatial planning · room relationships and circulationConcept only · cutaway walls lowered to reveal the layout
One conceptual floor plan, developed step by step. Schematic, not an engineering detail.
Build · tools, structure and site coordination

01 / 04

Zoning + setbacks

Fullerton residential standards we design against.

  • Front: 25 ft · Rear: 20 ft · Side: 5 ft · R-1 standard; Raymond Hills + Sunny Hills add hillside review
  • Height limit: 35 ft for SFR
  • Lot coverage: up to 40% (varies by zone)
  • Typical R-1 minimum lot size: 7,200 sqft

Fullerton permit reality

What Fullerton plan check actually looks like.

Avorino drafts the drawings for single-family custom builds against Fullerton's published code. The variable is which plan checker draws your set and what they flag — the set is built for that, so comments resolve in one round where the city allows.

  • Pre-application consult before drawings finalize
  • Comment rounds answered fast and resolved in writing
  • Clean drawings clear in the first or second comment round
  • State law caps each plan-check round at 60 days once the application is complete; full cycles with resubmittals typically run longer
  • Submission is hybrid: Fullerton's “Apply for Permit” link opens the Tyler EnerGov Customer Self-Service portal for online plan upload, but hard-copy sets are still accepted at the Building & Safety counter (303 W. Commonwealth). Avorino files whichever the project calls for.

Fullerton lot profile

What Fullerton lots typically throw at the build.

Predominantly flat coastal-plain terrain citywide (mean elevation ~150 ft), with a hillside pocket in the northeast at Raymond Hills.

  • Hillside Management Ordinance applies above 25% grade
  • Soils + geotechnical engineering required up-front
  • Retaining design where the slope calls for it
  • Drainage + erosion control reviewed alongside structural
  • West and north Fullerton sit on the West Coyote Hills oil field — if the pad is over or near a former oil/gas well, CalGEM runs a Construction Site Well Review before you can build, and methane mitigation can follow.
  • The Coyote Hills carry a 2025 Very High Fire Hazard Zone (WUI construction), and flatland Fullerton falls in CGS liquefaction zones — so a mapped parcel needs a geotech study.
  • Flatland Fullerton falls in CGS liquefaction Zones of Required Investigation (Anaheim/Yorba Linda quadrangles), so a mapped parcel needs a geotech study and engineered foundation.

Verify with the city

All Fullerton construction and permitting details on this page, including fees, setbacks, timelines, and zoning, are based on the City of Fullerton Building & Safety Division's published information and are subject to change. This information may not be fully up to date or accurate. For the latest requirements, visit the City of Fullerton Building & Safety Division directly, and confirm anything that affects your budget or schedule before you build.

Fullerton investment range

Where Fullerton sits on the OC price range.

Fullerton custom homes typically land at $1.1M – $4M+. The variance inside that range depends on lot complexity, finish level, structural ambition, and whether the lot sits above a hillside grade threshold.

  • Finish-level decisions move the budget the most
  • Structural ambition (hillside cuts, multi-story, glass-line walls) pushes the upper end
  • Hillside engineering adds a retaining + soils line most flat lots don't carry
  • Avorino's contract is fixed-price after design — no escalation surprises
Custom kitchen island with Wolf range, brass + marble herringbone
Luxury Custom Home · Aliso Viejo

Finish carpentry

Held to the framing standard.

Cabinetry, stair carpentry, window trim, paint cuts — the trades where rushed jobs reveal themselves. Every Avorino custom-home interior is shop-built, drawing-checked, and dry-fit before paint.

  • Custom millwork drawing-checked
  • Stone, tile, paint signed off selection-by-selection
  • Lighting designed against finish materials
  • Tiered warranty in writing
Custom home — family room with fireplace and media wall, Aliso Viejo, Avorino
Luxury Custom Home · Aliso Viejo

Same team, end-to-end

One roof, concept to keys.

Architecture, structural engineering, permitting, construction, and the tiered warranty — coordinated under one roof, one builder on point through every trade. You sign once; the disciplines are sequenced so they don't fight each other in the field.

  • One licensed contact through Certificate of Occupancy + warranty
  • Architect coordination, not architect competition
  • Weekly progress reports, written change-orders only
  • Fixed-price design-build after design phase

Recent builds

Ground-up homes, built for real life.

01 / 08

01 / Avorino in Fullerton

Is Avorino a licensed custom home builder in Fullerton?

Yes. Avorino carries California General-B License #1107538 and builds custom homes in Fullerton end-to-end: architecture, structural engineering, permits, and construction under one roof. As the Fullerton custom home builder and general contractor on your project, Avorino owns the schedule and the outcome, rather than coordinating a chain of subcontractors you'd manage yourself.

How much does a custom home in Fullerton cost?

Custom homes in Fullerton typically run $1.1M – $4M+ depending on size, finish level, and lot conditions. Avorino quotes a fixed-price design-build contract so the budget you sign at week one is the budget at the warranty handover.

02 / Cost, time & permits

How long does a custom home build take in Fullerton?

Permit-to-keys windows in Fullerton typically land at 14 – 26+ months for a standard single-family build. Hillside soils + retaining engineering happens in the design phase so plan-check is single-round wherever possible.

Do you handle Fullerton permits and plan check?

Yes. Avorino runs every Fullerton permit submittal, plan-check correction, and final inspection through one office. You sign once at the start; from there, permitting and inspections run through us.

What's the warranty on a custom home build?

Every Avorino build ships with a tiered construction warranty: 1-year fit & finish, 4-year systems (plumbing, electrical, HVAC), and 10-year latent structural. Avorino takes the warranty call.

Free consultation

Tell us about your Fullerton custom home.

Avorino reviews your project and comes back with a fixed-price design-build proposal and a written timeline, calibrated to Fullerton's permit reality.

AVORINO / SPATIAL STUDIESFIG. 01
Bespoke single-family · Architect coordinationConcept only · cutaway walls lowered to reveal the layout
Designed concept · not your final plan
  1. 01Project
  2. 02Plans
  3. 03Context
  4. 04Contact

What kind of custom home?

Project type

Custom Homes in other Orange County cities

Serving 37 Orange County cities & communities, plus unincorporated OC and nearby LA County.

Talk To UsFree estimate. Same-week free consultation.General-B License #1107538 · 7+ years of Orange County experience