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ADU Builders in Santee, CA

67 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 Santee 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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Santee is home to about 60,037 people (2020 Census) in San Diego County. We found 67 ADU builders and contractors that show up for Santee homeowners on Google Maps, 8 of them based in the city itself. Their average Google rating is 4.8 stars. 16 market themselves specifically as ADU builders. 33 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are 3 Day Kitchen & Bath, US Pacifica Builders and NJ Design & Build - Najmna.

San Diego was an early ADU adopter. Coastal-zone lots may need a coastal development permit, which state law now requires within 60 days, and transit-area lots often qualify for the 18-foot detached height allowance.

#1

3 Day Kitchen & Bath

5.0 (91 Google reviews)
✔ CSLB License Verified #1118228

10620 Treena St Ste 230, San Diego, CA 92131

Serves Santee · based in San Diego
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#2

US Pacifica Builders

5.0 (46 Google reviews)
✔ CSLB License Verified #1129268

9557 Candida St Suit A, San Diego, CA 92126

Serves Santee · based in San Diego
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#8

Apex American Homes

4.9 (76 Google reviews)
✔ CSLB License Verified #1122778

2698 W Canyon Ave., San Diego, CA 92123

Serves Santee · based in San Diego
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#9

D & L Builders Inc.

4.9 (71 Google reviews)
✔ CSLB License Verified #1053205

4410 Glacier Ave #8, San Diego, CA 92120

Serves Santee · based in San Diego
Remodels & additionsGeneral contractor
CallWebsiteView profile
#11

G & Sons Construction

5.0 (22 Google reviews)
✔ CSLB License Verified #1098792

Service-area business · La Mesa

Serves Santee · based in La Mesa
Remodels & additionsHome builderGeneral contractor
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#19

Shirari Design Build

5.0 (13 Google reviews)
✔ CSLB License Verified #1073398

10755 Scripps Poway Pkwy Ste f386, San Diego, CA 92131

Serves Santee · based in San Diego
Design-buildGeneral contractor
CallWebsiteView profile
#24

Build Wize LLC

5.0 (10 Google reviews)

9655 Granite Ridge Dr, San Diego, CA 92123

Serves Santee · based in San Diego
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#25

AZH Builders

4.8 (41 Google reviews)

3683 University Ave, San Diego, CA 92104

Serves Santee · based in San Diego
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#29

Cabal Construction

5.0 (8 Google reviews)
✔ CSLB License Verified #1085622

7103 University Ave, La Mesa, CA 91942

Serves Santee · based in La Mesa
Home builderGeneral contractor
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#30

HSP ADU Builders

4.9 (11 Google reviews)

5975 Redwood St, San Diego, CA 92105

Serves Santee · based in San Diego
ADU specialistRemodels & additionsHome builderGeneral contractor
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#42

Home Services Plus

4.7 (21 Google reviews)
✔ CSLB License Verified #1119646

6431 Wandermere Dr, San Diego, CA 92120

Serves Santee · based in San Diego
Remodels & additionsHome builderGeneral contractor
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#43

Apex Works

5.0 (3 Google reviews)

Service-area business · Lemon Grove

Serves Santee · based in Lemon Grove
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#52

Eco Minded Solutions

4.5 (40 Google reviews)
✔ CSLB License Verified #948204

9685 Via Excelencia #100, San Diego, CA 92126

Serves Santee · based in San Diego
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#60

TrueBuild ADU

3.0 (2 Google reviews)
✔ CSLB License Verified #770286

4901 70th St Ste 2, San Diego, CA 92115

Serves Santee · based in San Diego
ADU specialistHome builderGeneral contractor
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#61

R Neder Construction

2.3 (3 Google reviews)
✔ CSLB License Verified #929258

1890 N Marshall Ave Ste 102, El Cajon, CA 92020

Serves Santee · based in El Cajon
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#62

ADU West

No rating yet (0 Google reviews)

7400 El Cajon Blvd #105, La Mesa, CA 91942

Serves Santee · based in La Mesa
ADU specialistHome builder
CallWebsiteView profile
#64

Instant Living

No rating yet (0 Google reviews)
✔ CSLB License Verified #931231

3954 Murphy Canyon Rd, San Diego, CA 92123

Serves Santee · based in San Diego
Prefab / modularHome builder
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Permits and pre-approved plans in Santee

ADU permits in Santee 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 Santee whether it has approved plans you can use. See our pre-approved plans guide and California ADU law summary.

Planning an ADU in Santee? Start here

Garage Conversion ADU Cost in Southern California (and What Drives It)The ADU Permit Process in California: Step by Step (2026)Two-Story and Above-Garage ADUs in California: Height Rules, Costs and DesignADU Rental Income and Property Taxes in California: What to Expect

All ADU guides →

Santee ADU FAQ

How many ADU builders serve Santee?

Our directory lists 67 ADU builders and contractors that appear for Santee on Google Maps, including companies based in nearby San Diego County communities.

Do I need a permit to build an ADU in Santee?

Yes. ADUs need a building permit from the City of Santee, 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 Santee?

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 Santee 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 San Diego County

San Diego 120Chula Vista 86Oceanside 56Escondido 110Carlsbad 67El Cajon 22Vista 60San Marcos 66Encinitas 64La Mesa 41National City 99Poway 49
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