General Contractor in Mission Viejo, CA
A general contractor in Mission Viejo files every permit online through the City's Client Self Service portal, clears a neighborhood design review for roofs, fences, decks and additions, and plans around clay and sulfate soils and a fire-mapped east and north edge. MDG Builders, CSLB #1040337, manages all eleven trades here.
Eleven trades, each read against Mission Viejo's tracts and rules
Pick the job you have in mind. Each guide separates what the City's own handouts say from what we could not read, and the prices on those pages are regional figures, not Mission Viejo quotes.

Kitchen Remodeling in Mission Viejo
A March 2026 City handout on permit triggers, 1970s and 1980s houses, soils under a bump-out and ADU rules for a second kitchen.
See Mission Viejo kitchen remodeling →
Bathroom Remodeling in Mission Viejo
Mission Viejo's online-only permit portal, the City's shower and fan rules, 1970s tract bathrooms and the condo HOA question for a bath job.
See Mission Viejo bathroom remodeling →
ADU Construction in Mission Viejo
Mission Viejo's ADU route: the March 2026 reference guide, garage conversions, HOA limits, edge-of-city fire zones and the single pre-approved plan.
See Mission Viejo ADU construction →
Room Additions in Mission Viejo
Mission Viejo's Chapter 9.43 review with HOA and neighbor sign-off, expansive and sulfate soils, fire-edge roofing and the 60 day deemed-approved clock.
See Mission Viejo room additions →
Roofing in Mission Viejo
A 10 percent roof permit exemption, HOA review under Chapter 9.43, a 2025 fire zone on the east and north edges and online-only permits.
See Mission Viejo roofing →
Windows in Mission Viejo
Mission Viejo's permit-for-every-window handout, its energy label and safety glass rules, lead-safe work in 1970s tracts and fire-edge glazing.
See Mission Viejo window replacement →
Flooring in Mission Viejo
Slab moisture on sulfate soil, the City's permit list, asbestos in 1970s tracts, HOA and condo approval and flooring costs in Mission Viejo.
See Mission Viejo flooring →
Painting in Mission Viejo
No paint permit, HOA color rules, stucco work, the EPA lead rule, South Coast low-VOC limits and a City paint grant of up to $12,500.
See Mission Viejo painting →
Concrete in Mission Viejo
Sulfate-rated mix, expansive soil footings, the 30 inch exemption, the retaining wall conflict, HOA review and pour costs in Mission Viejo.
See Mission Viejo concrete work →
Decks in Mission Viejo
The 2025 Very High fire zone, OCFA plans, Chapter 9.43 HOA review, patio cover rules, deck repair and wood versus composite cost in Mission Viejo.
See Mission Viejo deck building →
Fencing in Mission Viejo
A 6 foot permit exemption, Chapter 9.43 review for taller fences, City papers that disagree on retaining walls and slope and soil questions.
See Mission Viejo fencing →How do the City, your HOA and the ground itself shape a Mission Viejo project?
Mission Viejo was drawn on paper before a single house stood. Three developers, Donald Bren, Philip Reilly and James Toepfer, purchased the ranch's northern 10,000 acres from the O'Neill family in 1963, with Toepfer drafting the master plan and design guidelines, and by 1965 Orange County had approved a planned community sized for 30,000 homes and businesses. Families moved in from 1966, and the tracts opened in waves from El Dorado and Monterey Master in 1967 to Cordova in 1975. Lake Mission Viejo welcomed association members in 1978, the 20,000th house was finished in 1986 and the city incorporated as a contract city on March 31, 1988. Census Bureau 2024 estimates count 34,794 housing units: 39.7 percent date from the 1970s, 25.6 percent from the 1980s, about 54.6 percent predate 1980 and 73.2 percent are detached houses. Renters hold 23.2 percent of occupied homes and a typical owner-occupied home is valued at $1,110,600. Homes of that age often carry original paint, floor layers and window frames, so EPA's lead-safe rule and the air district's asbestos testing rule can reach a kitchen remodel, a bathroom remodel, new flooring or even a repaint. These are one-year city estimates with wide margins, so confirm your own house's build year before you plan around them.
The paperwork all runs through one door. The Building Services division is staffed under contract by Charles Abbott Associates, and since September 7, 2023 it accepts permits, plans and inspection requests only through the Client Self Service portal. The counter at 200 Civic Center, open weekdays 8 a.m. to 4 p.m. and closed noon to 1, answers questions at 949-470-3054 but does not take filings. Anyone who needs to see a permit needs a portal login that the applicant adds, and the fee estimator works without one. The contractor files a Permit Disclosure Form with a license and workers' compensation declaration, and Orange County Fire Authority reads plans for larger residential jobs. The City's March 2026 exempt list covers fences and garden walls up to 6 feet, roof repairs under 10 percent of the roof, driveways and walks up to 30 inches above grade, painting, carpet, tile and countertop replacement without drywall work. Window and door swaps are the stricter exception, because a January 2020 handout says every one needs a permit. Two limits on our research apply: the City's code library blocked our tools with a 403 error, and its 2025 Building and Fire Code PDFs are scans we could not read, so no zoning setback, height, lot coverage or fence height number appears anywhere on these pages. The only fees we cite are recycling deposits, $500 for most renovations and $750 for additions and accessory structures, taken from an April 2023 schedule, so check the portal's estimator for today's amounts.
Then come the layers that decide a tract's fate. Municipal Code Chapter 9.43 asks that permit-required residential work, including new roofs, fences, walls, patio covers, decks, spas and additions, be found compatible with the neighborhood. The HOA's architectural committee reviews it first, or the City does where no committee exists, neighbors sign the City's Neighbor Awareness Form, and an application that draws no answer in 60 days counts as approved. Paint-only jobs fall outside the chapter by its own wording, though your recorded CC&Rs may still govern colors, and the City says state law keeps an ADU out of the process. A room addition or deck cannot skip it. The City's own papers also disagree on retaining walls: one handout exempts them up to 3 feet while the wall guidelines require a permit above 48 inches, so call before digging near a fence line. Fire is the next layer. CAL FIRE's 2025 maps reached the City Council for a hearing on May 27, 2025, the Safety Element maps the eastern and northern borders as Very High, and the City says the update reshaped those boundaries and added High areas. We could not verify the ordinance details or any neighborhood's tier. Where Chapter 7A hardening applies, the City's slides list Class A roofing, ember-resistant vents, tempered or dual-pane glass and fire-resistant decking, and they call for 100 feet of defensible space in the Very High zone, but we found no claim of a citywide Class A roof, so ask about your parcel before pricing a roof, new windows or a fence. Underneath it all is the soil. The City's addition checklist, revised in 2008 and repeated in 2017, says expansive and sulfate-bearing ground is common and calls for footings 24 inches deep, a 6 mil plastic vapor barrier and concrete rated 4,500 psi with Type V cement wherever it meets soil, unless an engineer's soils report sets other values. That matters to every concrete job and every new footing.
Weather and money close the picture. The nearest rain gauge, a precipitation-only station about a mile from the city center, averages 15.25 inches a year, with 11.40 of them from December through March. Heat comes from stations farther away: the Irvine Ranch station, 8.6 miles northwest, reaches 90 degrees F or more on 61.6 days a year and 100 or more on 7.5, while coastal Laguna Beach logs only 4.4 days at 90, so inland foothill streets can run far hotter than the shore. The City's Safety Element names fall Santa Ana winds as the main wind hazard. Owners with limited income may qualify for the City's Paint Program, a grant of up to $12,500 for exterior painting and minor termite repair, run through the Housing Rehabilitation Office, whose number is 949-470-3026. The license on your permit is ours, CSLB #1040337: MDG Builders writes the scope, files the portal application, schedules licensed specialty firms to do the field work and walks the finished job with you, and any of those firms can be checked in CSLB's public records before it starts. Our guides on how contractors use subcontractors and checking a license explain the steps. Other Orange County hubs worth a look are Irvine and Orange.

- Mission Viejo accepts permits, plans and inspection requests only through Client Self Service, a rule in force since September 7, 2023.
- Chapter 9.43 design review runs a 60 day clock, after which an unanswered application counts as approved.
- By Census estimate, about 54.6 percent of the city's 34,794 housing units were built before 1980.
- A City handout revised January 3, 2020 says every window and exterior door replacement needs a building permit.
- The City's Paint Program offers qualifying owners a grant of up to $12,500 for exterior painting and minor termite repair.
- Recycling deposits run $500 for most renovations and $750 for additions and accessory structures, per an April 2023 schedule.
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Questions Mission Viejo homeowners ask before hiring
How do I apply for a building permit in Mission Viejo?
Apply online through the City's Client Self Service portal, because in person filing ended September 7, 2023. The counter at 200 Civic Center answers questions weekdays from 8 to 4, closed noon to 1. Everyone who must see the permit needs a portal account, and the applicant adds each person.
Which Mission Viejo projects need no building permit?
A short list does, and windows are not on it. The City's March 2026 handout exempts fences up to 6 feet, roof repairs under 10 percent, painting, carpet, tile and driveways up to 30 inches above grade. Retaining walls conflict: one page says 3 feet, another requires a permit above 48 inches. Call first.
What is Chapter 9.43 and does my project have to go through it?
Chapter 9.43 is the City's neighborhood compatibility review, and it applies to permit-required work such as new roofs, fences, walls, decks, patio covers and additions. Your HOA's architectural committee reviews first, neighbors sign a form, and silence for 60 days counts as approval. Paint-only jobs fall outside it, but CC&Rs may still apply.
Is my Mission Viejo house in a Very High fire hazard zone?
Possibly, if you live on the eastern or northern edge. Its Safety Element maps those borders as Very High, and the 2025 update reshaped the boundaries and added High areas. We could not verify ordinance details, so look up your parcel on the City's map viewer and ask the fire authority about defensible space.
Does Mission Viejo's soil need a special concrete mix?
Often, by the City's own account. The City's addition checklist calls expansive soil and high sulfates common and asks for 24 inch footings plus 4,500 psi Type V concrete wherever it touches soil, unless a soils report differs. That checklist dates from 2008 and 2017, so ask Building Services which requirements apply to your pour.
Can I build an ADU or convert my garage in Mission Viejo?
Yes, the City reviews ADUs under state law, and its FAQ says a complete application is approved within 60 days. Its March 2026 reference guide lists sizes and setbacks, but we read them secondhand, so confirm every number with Planning at 949-470-3053 before drawing. An ADU does not need the Chapter 9.43 neighbor form.
What does a permit deposit cost in Mission Viejo?
Two recycling deposits appear in an April 2023 City fee schedule: $500 for renovating an existing structure and $750 for an addition or accessory structure, on work of 250 square feet and $10,000 or more. Fences and small jobs use an exempt option. Confirm today's amounts in the portal's fee estimator.
Does Mission Viejo help pay to paint a house?
For qualifying households, yes. The City's Paint Program grants up to $12,500 for exterior painting and minor termite repair on owner-occupied homes, with income and asset limits, and the City must approve the color. An approved owner must stay one year after the work. The Housing Rehabilitation Office, 949-470-3026, explains how to apply.
Tell us about your Mission Viejo project
Tell us the street, your tract name if you know it and what you want built or replaced. We check the parcel against the fire map and your HOA's review route first, then call to explain which steps your scope is likely to meet.