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ADU Builders in Mission Viejo, CA

59 builders · ranked by Google rating and review volume · 33 CSLB license verified

★ Featured ADU builder

Featured ADU builder — this spot is open

Put your ADU company at the top of this page, in front of Mission Viejo homeowners who are comparing builders right now. Includes your logo, project photos, a direct call button and a link to your website.

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Mission Viejo is home to about 93,653 people (2020 Census) in Orange County. We found 59 ADU builders and contractors that show up for Mission Viejo homeowners on Google Maps, 6 of them based in the city itself. Their average Google rating is 4.8 stars. 12 market themselves specifically as ADU builders, and 1 mention garage conversions. 33 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are SOCAL HOME RENOVATION, Tixan Construction and Integria Design Build.

In Orange County, HOA and design-standard questions come up often. State law voids CC&Rs that ban ADUs, but HOAs can still apply reasonable objective standards. Compact lots make attached units and garage conversions popular.

#1

SOCAL HOME RENOVATION

5.0 (46 Google reviews)
✔ CSLB License Verified #1103895

32400 Crown Valley Pkwy, Dana Point, CA 92629

Serves Mission Viejo · based in Dana Point
Remodels & additionsHome builder
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#2

Tixan Construction

5.0 (41 Google reviews)
✔ CSLB License Verified #1105549

21502 Firwood, Lake Forest, CA 92630

Serves Mission Viejo · based in Lake Forest
Remodels & additionsGeneral contractor
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#3

Integria Design Build

5.0 (36 Google reviews)
✔ CSLB License Verified #1107580

20381 Lake Forest Dr suite b-4, Lake Forest, CA 92630

Serves Mission Viejo · based in Lake Forest
Design-buildGeneral contractor
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#7

Bud Remodeling

5.0 (26 Google reviews)
✔ CSLB License Verified #1067878

22772 Centre Dr #100, Lake Forest, CA 92630

Serves Mission Viejo · based in Lake Forest
Remodels & additionsGeneral contractor
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#8

Inspired Remodels

5.0 (26 Google reviews)
✔ CSLB License Verified #881221

21098 Bake Pkwy Ste. 100, Lake Forest, CA 92630

Serves Mission Viejo · based in Lake Forest
Remodels & additions
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#9

RIA Group

5.0 (25 Google reviews)

Service-area business · Rancho Santa Margarita

Serves Mission Viejo · based in Rancho Santa Margarita
Remodels & additionsHome builderGeneral contractor
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#11

Kol & Co.

5.0 (24 Google reviews)

23431 Blue Bird Dr, Lake Forest, CA 92630

Serves Mission Viejo · based in Lake Forest
Remodels & additionsHome builderGeneral contractor
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#12

True Home Builders

5.0 (19 Google reviews)
✔ CSLB License Verified #1073280

14 Hughes Ste B204, Irvine, CA 92618

Serves Mission Viejo · based in Irvine
Remodels & additionsHome builder
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#14

D2A Construction

4.9 (36 Google reviews)
✔ CSLB License Verified #1122027

23121 Plaza Pointe Dr Ste 105, Laguna Hills, CA 92653

Serves Mission Viejo · based in Laguna Hills
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#15

Modern Creation Inc.

5.0 (16 Google reviews)
✔ CSLB License Verified #1070430

23046 Avenida De La Carlota #600, Laguna Hills, CA 92653

Serves Mission Viejo · based in Laguna Hills
Remodels & additions
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#16

OC Quality Builders

4.9 (30 Google reviews)
✔ CSLB License Verified #1148925

22981 Triton Way Unit C, Laguna Hills, CA 92653

Serves Mission Viejo · based in Laguna Hills
Remodels & additionsHome builderGeneral contractor
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#17

IGS Construction

5.0 (14 Google reviews)
✔ CSLB License Verified #1087602

23362 Madero # L, Mission Viejo, CA 92691

Based in Mission Viejo
Remodels & additionsHome builderGeneral contractor
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#18

Eskan Design Build

5.0 (13 Google reviews)
✔ CSLB License Verified #1008641

26941 Cabot Rd #114, Laguna Hills, CA 92653

Serves Mission Viejo · based in Laguna Hills
Design-buildGeneral contractor
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#22

ProHome Remodels

4.9 (18 Google reviews)
✔ CSLB License Verified #1140564

25381 Commercentre Dr, Lake Forest, CA 92630

Serves Mission Viejo · based in Lake Forest
Remodels & additionsHome builderGeneral contractor
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#29

Kash Construction Inc

5.0 (7 Google reviews)
✔ CSLB License Verified #1028459

23301 Ridge Rte Dr, Laguna Hills, CA 92653

Serves Mission Viejo · based in Laguna Hills
Remodels & additionsGeneral contractor
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#31

SDB

5.0 (6 Google reviews)
✔ CSLB License Verified #1072529

27601 Forbes Rd #16, Laguna Niguel, CA 92677

Serves Mission Viejo · based in Laguna Niguel
Home builderGeneral contractor
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#32

Tech LA Builder

5.0 (4 Google reviews)
✔ CSLB License Verified #1097275

20381 Lake Forest Dr, Lake Forest, CA 92630

Serves Mission Viejo · based in Lake Forest
General contractor
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#36

Plus Home ADU

5.0 (3 Google reviews)
✔ CSLB License Verified #1062063

Service-area business · Aliso Viejo

Serves Mission Viejo · based in Aliso Viejo
ADU specialistRemodels & additionsHome builderGeneral contractor
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#38

CCS ADU Services

5.0 (2 Google reviews)

Service-area business · San Clemente

Serves Mission Viejo · based in San Clemente
ADU specialistHome builder
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#42

Renovateworks Inc

5.0 (2 Google reviews)

33542 Street of the Blue Lantern, Dana Point, CA 92629

Serves Mission Viejo · based in Dana Point
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#46

OC Coastal Builder

5.0 (1 Google reviews)
✔ CSLB License Verified #992307

Service-area business · Mission Viejo

Serves Mission Viejo · based in Mission Viejo
Remodels & additionsGeneral contractor
CallView profile
#47

LMX Builders

4.5 (15 Google reviews)
✔ CSLB License Verified #949201

1 Hollinwood, Irvine, CA 92618

Serves Mission Viejo · based in Irvine
Remodels & additionsGeneral contractor
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#48

EA Design And Build

4.2 (5 Google reviews)
✔ CSLB License Verified #1080602

Service-area business · Rancho Santa Margarita

Serves Mission Viejo · based in Rancho Santa Margarita
Design-build
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#52

Paragon Design & Construction Inc.

2.0 (5 Google reviews)
✔ CSLB License Verified #914888

Service-area business · Rancho Santa Margarita

Serves Mission Viejo · based in Rancho Santa Margarita
Remodels & additionsGeneral contractor
CallView profile
#57

Seagull Construction OC

No rating yet (0 Google reviews)
✔ CSLB License Verified #1154091

28351 Via Alfonse, Laguna Niguel, CA 92677

Serves Mission Viejo · based in Laguna Niguel
Remodels & additionsHome builderGeneral contractor
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Permits and pre-approved plans in Mission Viejo

ADU permits in Mission Viejo go through the city's building or planning department. Under AB 1332, every California city and county had to set up a pre-approved ADU plan program by January 1, 2025, so ask Mission Viejo whether it has approved plans you can use. See our pre-approved plans guide and California ADU law summary.

Planning an ADU in Mission Viejo? Start here

How Long Does It Take to Build an ADU in Southern California?ADU Rental Income and Property Taxes in California: What to ExpectAB 1033: Can You Sell an ADU Separately in California?How Much Does It Cost to Build an ADU in Southern California?

All ADU guides →

Mission Viejo ADU FAQ

How many ADU builders serve Mission Viejo?

Our directory lists 59 ADU builders and contractors that appear for Mission Viejo on Google Maps, including companies based in nearby Orange County communities.

Do I need a permit to build an ADU in Mission Viejo?

Yes. ADUs need a building permit from the City of Mission Viejo, which must approve or deny a complete application within 60 days under state law. Many cities also offer pre-approved plans that speed up review.

How much does an ADU cost in Mission Viejo?

Most Southern California detached ADUs land around $350 to $550 per square foot all-in, garage conversions around $200 to $350, and JADUs around $50,000 to $150,000. Use our ADU cost estimator and get three itemized bids.

How are Mission Viejo ADU builders ranked here?

By Google rating weighted by the number of reviews, so a 4.9 with 200 reviews ranks above a 5.0 with 3. Featured placements are clearly labeled and don't affect the organic ranking.

Nearby cities in Orange County

Anaheim 114Santa Ana 97Irvine 107Huntington Beach 88Garden Grove 97Fullerton 23Orange 95Costa Mesa 103Westminster 53Lake Forest 60Newport Beach 96Buena Park 52
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