General Contractor in Aliso Viejo, CA
A general contractor in Aliso Viejo handles two approvals, not one: Planning's form PS-240 with HOA sign-off first, then a permit from the City's own Building & Safety Division. Homes are young, so the work is driven by associations and a canyon fire edge. MDG Builders, CSLB #1040337, manages all eleven trades here.
Eleven trades, each matched to Aliso Viejo's young homes and two-step approvals
Start with the job you are weighing. Each guide says which City papers we read and which we could not open, and the dollar ranges on them are regional planning figures, not bids for a street in Aliso Viejo.

Kitchen Remodeling in Aliso Viejo
A City kitchen handout with permit triggers and exemptions, PS-240 and HOA sign-off, hood and circuit rules, and a pre-1994 fixture affidavit.
See Aliso Viejo kitchen remodeling →
Bathroom Remodeling in Aliso Viejo
Aliso Viejo's PS-240 Planning gate, the City's fan, glass and flow limits, the 1994 fixture affidavit and what a no-permit refresh really covers.
See Aliso Viejo bathroom remodeling →
ADU Construction in Aliso Viejo
Aliso Viejo's two ADU paths, building permit only or a Planning review permit with HOA notice, plus garage conversions, JADUs and the canyon fire edge.
See Aliso Viejo ADU construction →
Room Additions in Aliso Viejo
Aliso Viejo's 500 square foot Site Development Permit line, PS-240 and HOA sign-off, Class A roofing, sulfate footings and the 75 percent rule.
See Aliso Viejo room additions →
Roofing in Aliso Viejo
PS-240 and HOA sign-off before Building, a Class B versus Class A conflict, canyon-edge fire zones and 1990s roofs in Aliso Viejo.
See Aliso Viejo roofing →
Windows in Aliso Viejo
Aliso Viejo's permit for every window, PS-240 and HOA sign-off, U-factor limits, the Green Building fee waiver and tempered glass at the fire edge.
See Aliso Viejo window replacement →
Flooring in Aliso Viejo
PS-240 and HOA sign-off, the maintenance exemption, slab moisture and soils, 1990s floors, fixture rules and costs for flooring in Aliso Viejo.
See Aliso Viejo flooring →
Painting in Aliso Viejo
No paint permit, PS-240 association approval for new colors, the EPA lead rule for a small share of homes and South Coast low-VOC limits.
See Aliso Viejo painting →
Concrete in Aliso Viejo
Encroachment permits, Type V footings, a soils conflict, retaining walls, HOA sign-off and pour costs in Aliso Viejo.
See Aliso Viejo concrete work →
Decks in Aliso Viejo
PS-240 and HOA sign-off, permit lines, canyon-edge fire rules, patio covers, soils, deck repair and costs in Aliso Viejo.
See Aliso Viejo deck building →
Fencing in Aliso Viejo
42 inch front yard limits, 6 foot sides, a 72 inch masonry line, 60 inch pool barriers and PS-240 association approval in Aliso Viejo.
See Aliso Viejo fencing →Why does a project in Aliso Viejo clear Planning and your association before it reaches a permit counter?
Aliso Viejo is one of the youngest cities in Orange County, and its streets follow a plan drawn before they were paved. The City says the land was part of the 22,000-acre Moulton Ranch, which the Moulton family took title to in the 1890s from an 1842 Juan Avila grant, until the Mission Viejo Company bought the last 6,600 acres in 1976. The county approved that master plan in 1979, the first homes went on sale in March 1982, and the first residents arrived about eight months later. Voters chose cityhood with 93.3 percent in favor, and on July 1, 2001 Aliso Viejo became the county's 34th city. Census Bureau 2024 five-year estimates count 20,507 housing units. About 51 percent were finished in the 1990s, roughly 75 percent since 1990 and only about 5.6 percent before 1980. Detached houses are 36.4 percent of the stock and attached homes 24.5 percent, a third sit in buildings with five or more units, and 43.3 percent of occupied homes are rented. The median owner-occupied value is $917,900. For a homeowner that means a house in its thirties, with few lead-paint surprises but first-generation roofs, windows, decks, fences, stucco coats and bathroom fixtures coming due together. It also means the Aliso Viejo Community Association, which the City calls the first community-wide owners' association of its kind in California, and each sub-association above or beside your lot, hold a say over almost everything you can see from the street. The same pattern runs through Laguna Niguel, Mission Viejo and Lake Forest, though each city sets its own order of approvals, and nearby Laguna Hills, Laguna Woods and Laguna Beach each run their own counters.
In this city the approval sequence matters as much as the drawings. The Planning Services page says applicants must now get Planning's go-ahead before plans reach the Building Department, beginning with a Zoning Compliance Application, form PS-240, signed or accompanied by a letter from the owner and from the residential management association. The form lists addition or remodel, windows and doors, fences and walls, patio covers, pools and exterior architectural changes among its project types, and exempts only like-for-like swaps from association approval. The City's own residential checklist, updated December 31, 2025, is looser: it says owners need not hand the City an HOA letter, while reminding them that a permit never overrides recorded CC&Rs. Those two documents differ, so ask the counter which one governs your submittal. After Planning, the Building & Safety Division issues permits itself through the online Customer Self-Service portal, answers at 949-425-2540 and keeps a counter open weekdays from 8 a.m. to 1 p.m. Online inspection requests made before 4 p.m. are booked for the next business day, and construction may run weekdays 7 a.m. to 8 p.m. and Saturdays 8 a.m. to 8 p.m., never on Sundays. The 2025 state codes apply with local amendments, and one amendment pulls an entire building to new-construction standards once renovation value reaches 75 percent of its value across two years of permits. Every door and window replacement needs a permit, including retrofits. A kitchen remodel or bathroom remodel that replaces cabinets, sinks or fixtures does too, while a countertop swap or cabinet refacing alone does not. We could not find a re-roofing handout, so whether a re-roof needs a permit stays unverified until Building & Safety says so. Construction waste must be 65 percent recycled through CR&R, the City's only hauler, with no dumpsters on public streets.
Then the hillsides decide the rest. The City's 2024 Local Hazard Mitigation Plan puts the western and southern borders of Aliso Viejo in a Very High Fire Hazard Severity Zone, beside Very High and High zones along the city limits, near Aliso and Wood Canyons. The plan recalls the 1993 Laguna Beach Firestorm, which burned about 16,000 acres just to the west and damaged or destroyed more than 400 homes, and the June 2, 2018 Aliso Fire that began on a trail in Aliso Woods Canyon and forced evacuations. Whether the City has adopted the 2025 State Fire Marshal zone map is unverified, so ask before assuming a street is in or out. Where the zones apply, the City's handouts call for tempered windows and for ignition-resistant or noncombustible patio covers, decks and stairs within 50 feet of the house, with 6x10 beams and 8x8 columns on a deck. Roofs carry a puzzle of their own. A code amendment sets at least Class B for the roof covering, yet the City's submittal checklist calls for Class A on additions, so the roof class is the first question for a roof repair or replacement or a room addition. Two more City documents disagree. The addition checklist blames expansive, sulfate-rich soil and specifies 24 inch footings, Type V concrete at 4,500 psi and a 10 mil moisture barrier, while the hazard plan says expansive soil is not a significant issue. The code amendment says the city has no mapped flood zones, while the hazard plan warns that heavy autumn-to-spring rain on hillside terrain can flood key areas. The Building & Safety page lists Climate Zone 6, the checklist says Zones 6 and 8, and a few miles of coast distance matter: NOAA normals show only 4.4 days a year at 90 F or more at Laguna Beach and 61.6 at the Irvine Ranch station, with Aliso Viejo between them. That spread matters when you choose paint, windows and flooring for a sun-facing room.
Several smaller rules are worth knowing before you call anyone. A fence is capped at 42 inches inside front setbacks and 6 feet in side and rear yards, and any fence that is part of a pool barrier needs a permit. On a concrete job, the state exempt list names driveways and sidewalks, but the Public Works encroachment process exists for work touching public property, and the City's code exhibit describes a $3,000 refundable deposit, not a permit fee, returned at final inspection if the owner asks within 30 days. For an ADU, the City page says state law and Municipal Code section 15.14.080 govern, with a 500 square foot limit on a junior unit and permit-only approval for conversions and one small detached unit. We read that section from a February 7, 2025 archived copy, because the City's code library at codepublishing.com returned a 403 error to our tools. Our code quotations also come from the ordinance exhibit that OCFA posted in December 2025, so current ADU standards remain unverified and every ADU number should be confirmed with Planning at 949-425-2525. The license on a permit here is ours: MDG Builders, CSLB #1040337, writes the scope, files with Planning and Building, schedules licensed specialty firms for the field work and walks the finished job with you, and each firm's license can be checked on the state's public lookup. Read how contractors use subcontractors and how to check a license before you sign.

- Planning wants form PS-240, with owner and residential association sign-off, before any plans go to Building & Safety.
- Aliso Viejo issues its own permits through the Customer Self-Service portal, and every door and window replacement needs one.
- The City's 2024 hazard plan places the west and south borders in a Very High Fire Hazard Severity Zone.
- About 5.6 percent of the city's 20,507 housing units predate 1980, by Census 2024 five-year estimates.
- A code amendment sets Class B roofing at minimum, while the City's checklist calls for Class A on additions.
- The City says Aliso Viejo became Orange County's 34th city on July 1, 2001, with 93.3 percent of voters in favor.
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Questions Aliso Viejo homeowners ask before hiring
Do I need a permit for a remodel in Aliso Viejo?
Usually yes when you replace or move cabinets, sinks, fixtures or windows, and no for a countertop swap or cabinet refacing alone. Planning may ask for form PS-240 first. The City issues permits itself through its online portal, so call Building & Safety at 949-425-2540 before you price the job.
What is form PS-240 in Aliso Viejo?
It is Planning's Zoning Compliance Application, the step the City says comes before plans reach Building. It asks for the owner's signature and the residential association's sign-off, except for like-for-like work. Another City document says no HOA letter is needed at submittal, so ask the counter which applies to you.
Is my Aliso Viejo home in a fire hazard zone?
Possibly, if it sits along the western or southern edge, which the City's 2024 hazard plan places in a Very High zone. Whether the City adopted the 2025 State Fire Marshal map is unverified. Ask Building & Safety about your parcel, because tempered windows and ignition-resistant decks follow the answer.
Do replacement windows and doors need a permit here?
Yes, the City's handout says every door and window replacement needs a building permit, including retrofit windows set in existing frames. A retrofit needs only a final inspection, while changes that break stucco need more. Homes in High and Very High fire zones must use tempered windows, and sleeping rooms need egress sizes.
What roof class does Aliso Viejo require?
Class B at minimum, by a City code amendment that applies when more than half a roof is replaced in a year, though the City's checklist says Class A on additions. The City's documents conflict, so confirm the class with Building & Safety. Whether a plain re-roof needs a permit is unverified.
Can I build an ADU in Aliso Viejo?
Yes, state law and Municipal Code section 15.14.080 allow ADUs, and the City says they are approved without a hearing. A conversion or one small detached unit needs only a building permit, based on an archived code copy. Current standards are unverified, so confirm every ADU number with Planning at 949-425-2525.
Does a $3,000 encroachment deposit mean a permit fee?
No, it is a refundable deposit, not a permit fee. The City's code exhibit asks for it where public property could be damaged, returns it at final inspection and forfeits it if the owner does not request the refund within 30 days. Whether your driveway or sidewalk work touches public ground is a question for Public Works.
Did you read the City's online municipal code?
Not directly, because codepublishing.com returned a 403 error to our tools. We read code text from the ordinance exhibit that OCFA posted in December 2025 and from a February 7, 2025 archived copy of Chapter 15.14. Either may differ from the live code, so confirm each point with the City.
Tell us about your Aliso Viejo project
Tell us the neighborhood, whether your lot sits under a sub-association and what you hope to build or replace. Before we call back, we check the fire edge, the Planning step and the permit route, so the conversation starts from what your scope will actually meet.