Website Accessibility

Home Modifications


California Area Agencies on Aging (AAA)

You can locate an AAA in your area by calling 1-800-510-2020 or find your county phone number by visiting their web site. The California Department of Aging contracts with and provides leadership and direction to Area Agencies on Aging (AAA) that coordinate a wide array of services to seniors and adults with disabilities at the community level and serve as the focal point for local aging concerns.

Website: http://www.calregistry.com/resources/aaa.htm

Community Development Block Grants

Local agencies provide grants or low-interest loans to assist homeowners with modifications and repairs to the home. Based on income. Visit their web site to find your local number or call the US Department of Housing and Urban Development (HUD) at 800-998-9999 or 202-708-1112.

Website: http://www.hud.gov/local/ca/community/cdbg/index.cfm

Department of Energy

Department of Community Services and Development 1-866-860-9249 (voice) The Weatherization Assistance for Low-Income Persons program provides adequate insulation to conserve energy for low-income homes, particularly those who have disabilities or are elderly.

Website: http://www1.eere.energy.gov/wip/wap.html

Habitat for Humanity

Families in need of decent shelter apply to local Habitat affiliates. The affiliate's family selection committee chooses homeowners based on their level of need, their willingness to become partners in the program and their ability to repay the no-interest loan.

Phone: 800-422-4828, ext. 2551 or 2552

Website: http://www.habitat.org/

Multipurpose Senior Services Program (MSSP)

Local Multipurpose Senior Service Program (MSSP) sites provide social and health care management for frail elderly clients who are certifiable for placement in a nursing facility but who wish to remain in the community. The services must be provided at a cost lower than that for nursing facility care. Clients eligible for the program must be 65 years of age or older, live within a site's service area, be able to be served within MSSP's cost limitations, be appropriate for care management services, currently eligible for Medi-Cal, and certified or certifiable for placement in a nursing facility. MSSP site staff make this certification determination based upon Medi-Cal criteria for placement. The following counties do not have Multipurpose Senior Service Programs (MSSP) at present: Colusa, Del Norte, Nevada, Plumas, San Benito, San Luis Obispo, Sierra and Sutter.

Phone: 800-510-2020

Website: http://www.aging.ca.gov/Programs/#MSSP

Rebuilding Together

Provides assistance to those who own their own home but whom, because of physical limitation or income, are not able to cover the costs of home repair.

Phone: 800-473-4229

Website: http://www.rebuildingtogether.org/

Rural Housing Administration

Individuals living in a rural community of less than 20,000 residents may apply for Section 504 loans or grants to make a home accessible to people with disabilities.

Phone: 530-792-5800
Fax: 530-792-5848

Website: http://www.rurdev.usda.gov/CA-Contacts.html

State of California Department of Rehabilitation (DOR)

DOR provides Vocational Rehabilitation Services to Californians with disabilities that want to work. They may provide for home modifications and/or durable medical equipment for DOR clients that qualify.

Phone: 916-263-8981
TTY: 916-263-7477

Website: http://www.dor.ca.gov/


Alameda County Minor Home Repair and Housing Rehab Department

County: Alameda
Phone: 510-670-5398

Berkeley Home Repair Program

County: Alameda
Phone: 510-644-8546

City of Alameda Minor Home Repair Program

County: Alameda
Phone: 323-563-5665

City of Fremont Neighborhood Home Improvement Program

County: Alameda
Phone: 510-494- 4520

City of Oakland Access Improvement Program (AIP) for Rental Units

County: Alameda
Phone: 510-238-6160

East Bay Habitat for Humanity

County: Alameda
Phone: 510-251-6304

Salinas Rural Development

County: Alameda
Phone: 831-757-5294

Stockton Rural Development

County: Alphine
Phone: 209-472-7127

Stockton Rural Development

County: Amador
Phone: 209-472-7127

Butte County Habitat for Humanity

County: Butte
Phone: 530- 533-4401 ext. 4

City of Oroville Housing Development Department

County: Butte
Phone: 530-538-2495

Independent Living Service of Northern California

County: Butte
Phone: 530-893-8527

Oroville Rural Development

County: Butte
Phone: 530-533-4401

Calaveras Habitat for Humanity

County: Calaveras
Phone: 209-754-5331

Independent Living Assistance Program (ILAP)

County: Calaveras
Phone: 209-770-4089

Stockton Rural Development

County: Calaveras
Phone: 209-472-7127

Willows Rural Development

County: Colusa
Phone: 530-934-4614 ext. 4

City of Pittsburg Housing Authority Program

County: Contra Costa
Phone: 925-252-4830

City of Richmond Housing Rehabilitation Program

County: Contra Costa
Phone: 510-307-8143

Concord Housing Rehabilitation Program

County: Contra Costa
Phone: 925-671-3364

Mt. Diablo Habitat for Humanity

County: Contra Costa
Phone: 925-288-0112

Neighborhood Preservation Program

County: Contra Costa
Phone: 925-335-1115

Pleasant Hill Redevelopment Agency

County: Contra Costa
Phone: 925-671-5215

Stockton Rural Development

County: Contra Costa
Phone: 209-472-7127

Del Norte Habitat for Humanity

County: Del Norte
Phone: 707-464-2828

Eureka Rural Development

County: Del Norte
Phone: 707-443-6714 ext. 4

Senior Home Assistance Repair Program (SHARP)

County: Del Norte
Phone: 707-464-9013

Auburn Rural Development

County: El Dorado
Phone: 530-885-7081 ext. 4

El Dorado County Habitat for Humanity

County: El Dorado
Phone: 530-621-2111

Community Housing Partnership Program/City Moderate Rehabilitation Program

County: Fresno
Phone: 559-445-8905

Fresno County Community Development Division (HARP)

County: Fresno
Phone: 559-262-4292

Fresno Habitat for Humanity

County: Fresno
Phone: 559-237-4102

Fresno Rural Development

County: Fresno
Phone: 559-276-7494 ext. 4

Willows Rural Development

County: Glenn
Phone: 530-934-4614 ext. 4

Eureka Rural Development

County: Humboldt
Phone: 707-443-6714 ext. 4

Humboldt Habitat for Humanity

County: Humboldt
Phone: 707-441-1006

Redwood Community Action Agency

County: Humboldt
Phone: 707-269- 2002

City of Calexico

County: Imperial
Phone: 760-768-2177

Imperial Valley Habitat for Humanity/IVROP

County: Imperial
Phone: 760-353-3815

San Diego Habitat for Humanity

County: Imperial
Phone: 619-283-4663

Inyo Mona Advocates for Community Action (IMACA)

County: Inyo
Phone: 760-873-8557

Inyo Mona Area Agency on Aging

County: Inyo
Phone: 760-873-6364

Victorville Rural Development

County: Inyo
Phone: 760-843-6882 ext. 4

Bakersfield Economic and Community Development Department

County: Kern
Phone: 661-326-3765

Bakersfield Rural Development

County: Kern
Phone: 661-336-0967 ext. 4

Indian Wells Valley Habitat for Humanity

County: Kern
Phone: 760-446-4151

Sun Village Chamber of Commerce - Handyman Program

County: Kern
Phone: 661-994-2341

Hanford Rural Development

County: Kings
Phone: 559-584-9227 ext. 4

Ukiah Rural Development

County: Lake
Phone: 707-462-2916 ext. 4

Alturas Rural Development

County: Lassen
Phone: 530-233-4615

AAA Builders

County: Los Angeles
Phone: 323-734-7169

Burbank Housing and Redevelopment Development Department

County: Los Angeles
Phone: 818-238-5190

Chatsworth Handyworker Program

County: Los Angeles
Phone: 818-407-9947

City of Arcadia Home Improvement Program

County: Los Angeles
Phone: 626-574-5423

City of Avalon, Santa Catalina Island

County: Los Angeles
Phone: 310-510-0220

City of Glendora Housing and Redevelopment Dept.

County: Los Angeles
Phone: 626-914-8208

City of LA Community Redevelopment Agency

County: Los Angeles
Phone: 213-977-1951

City of Pico Rivera

County: Los Angeles
Phone: 562-801-4347

City of Temple City Planning Department

County: Los Angeles
Phone: 626-285-2171

Community Development Commission's CDBG Program

County: Los Angeles
Phone: 323-890-7001

Complete Access

County: Los Angeles
Phone: 310-474-8800

Hawaiian Gardens Housing Rehab. Program

County: Los Angeles
Phone: 562-420-2641

Home Secure

County: Los Angeles
Phone: 818-762-5892, 323-937-5855, or 805-379-2273

Jewish Family Service MSSP

County: Los Angeles
Phone: 323-937-5930

L.A. Works - Housing Rehabilitation Program

County: Los Angeles
Phone: 626-960-3964

LAHD Handyworker Program

County: Los Angeles
Phone: 213-808-8973

Lakewood Redevelopment Agency

County: Los Angeles
Phone: 562-866-9771

Long Beach Habitat for Humanity

County: Los Angeles
Phone: 562-427-4663

Los Angeles Habitat for Humanity

County: Los Angeles
Phone: 213-975-9757

Los Angeles Habitat for Humanity

County: Los Angeles
Phone: 310-323-4663

Los Angeles HandyWorker Program

County: Los Angeles
Phone: 213-808-8803

Maravilla Foundation Handyworker Program

County: Los Angeles
Phone: 323-869-4542

Mexican-American Opportunity Foundation Handy Worker Program

County: Los Angeles
Phone: 323-267-4333

Pacific Asian Consortium in Employment (PACE)

County: Los Angeles
Phone: 213-353-3915

Pasadena Housing and Community Development

County: Los Angeles
Phone: 626-744-8300

Pasadena Maintenance Assistance to Homeowners (MASH)

County: Los Angeles
Phone: 626-797-0228

Pasadena Neighborhood Housing Services

County: Los Angeles
Phone: 626-794-7191

Pomona Valley Habitat for Humanity

County: Los Angeles
Phone: 909-596-7098

San Fernando Valley Interfaith Council - Home Handyworker Program

County: Los Angeles
Phone: 818-766-5165

San Fernando/Santa Clarita Habitat for Humanity

County: Los Angeles
Phone: 818-884-8808

San Gabriel Home Improvement Program

County: Los Angeles
Phone: 626-308-2806

San Gabriel Valley Habitat For Humanity

County: Los Angeles
Phone: 760-342-2243

Santa Fe Springs City/County Home Repair Program

County: Los Angeles
Phone: 562-946-5196

Signal Hill Redevelopment Agency

County: Los Angeles
Phone: 562-989-7370

Venice Community Housing Corporation ? HandyWorker Program Serving West Los Angeles

County: Los Angeles
Phone: 310-399-4100

Veterans in Community Service (VICS) HandyWorker Program

County: Los Angeles
Phone: 562-204-0529

Victorville Rural Development

County: Los Angeles
Phone: 760-843-6882 ext. 4

Watts Labor Community Action Committee - City Handyworker Project

County: Los Angeles
Phone: 323-563-5691

Westside Center for Independent Living

County: Los Angeles
Phone: 310-390-3611

Wilmington Los Angeles Housing Department HandyWorker Program

County: Los Angeles
Phone: 310-549-0052

Merced Rural Development

County: Madera
Phone: 209-723-0475 ext. 4

Santa Rosa Rural Development

County: Marin
Phone: 707-526-6797 ext. 4

Merced Rural Development

County: Mariposa
Phone: 209-723-0475 ext. 4

Mendocino Coast Habitat for Humanity

County: Mendocino
Phone: 707-964-0942

Mendocino Inland Habitat for Humanity

County: Mendocino
Phone: 707-462-8913

Ukiah Rural Development

County: Mendocino
Phone: 707-462-2916 ext. 4

Merced County Habitat for Humanity

County: Merced
Phone: 209-358-7280

Merced Rural Development

County: Merced
Phone: 209-723-0475 ext. 4

Alturas Rural Development

County: Modoc
Phone: 530-233-4615

Stockton Rural Development

County: Mono
Phone: 209-472-7127

City of Salinas Redevelopment Agency

County: Monterey
Phone: 831-758-7387

Community Housing Improvement Systems and Planning Association, Inc.

County: Monterey
Phone: 831-757-6251

Monterey County Habitat for Humanity

County: Monterey
Phone: 831-422-4828

Salinas Rural Development

County: Monterey
Phone: 831-757-5294 ext. 4

Housing Authority of the City of Napa

County: Napa
Phone: 707-257-9543

Solano/Napa Habitat for Humanity

County: Napa
Phone: 707-422-1948

Ukiah Rural Development

County: Napa
Phone: 707-462-2916 ext. 4

Auburn Rural Development

County: Nevada
Phone: 530-885-7081 ext. 4

FREED Fix-It Program, Grass Valley

County: Nevada
Phone: 530-272-1732

Nevada County Habitat for Humanity

County: Nevada
Phone: 530-274-1951

City of Placentia Development Services Department

County: Orange
Phone: 714-993-8124

Costa Mesa Housing Rehabilitation

County: Orange
Phone: 714-754-5049

Economic Development Department/ Redevelopment Agency

County: Orange
Phone: 714-671-4421

Habitat for Humanity of Orange County

County: Orange
Phone: 714-434-6200

Huntington Beach Economic Division Department/ Housing Rehabilitation Program

County: Orange
Phone: 714-960-8831

Moreno Valley Rural Development

County: Orange
Phone: 951-656-6800

Orange County Housing and Community Development

County: Orange
Phone: 714-480-2900

Santa Ana Housing Division

County: Orange
Phone: 714-667-2221

Auburn Habitat for Humanity

County: Placer
Phone: 916-652-1045

Auburn Rural Development

County: Placer
Phone: 530-885-7081 ext. 4

Foothills Habitat for Humanity

County: Placer
Phone: 916-781-9601

Placer County Redevelopment Agency

County: Placer
Phone: 530-889- 2436

Roseville Handyman Repair Program

County: Placer
Phone: 916-782-6247

Alturas Rural Development

County: Plumas
Phone: 530-233-4615

City of Palm Springs Housing

County: Riverside
Phone: 760-323-8264

City of Riverside Development Department

County: Riverside
Phone: 951-826-5743

Cypress Redevelopment Agency

County: Riverside
Phone: 714-229-6720

Hemet/San Jacinto Habitat for Humanity

County: Riverside
Phone: 951-658-0235

Indio Habitat for Humanity

County: Riverside
Phone: 760-342-2243

Indio Rural Development

County: Riverside
Phone: 760-342-4624 ext. 4

Inland Valley Habitat for Humanity

County: Riverside
Phone: 951-296-3362

Moreno Valley Rural Development

County: Riverside
Phone: 951-656-6800

Riverside City Housing Development Corporation

County: Riverside
Phone: 951-341-6511

Riverside County Economic Development Agency - Enhanced Home Repair Program

County: Riverside
Phone: 800-909-0079

Riverside Enhanced Senior Home Repair Program

County: Riverside
Phone: 800-909-0079

Riverside Habitat for Humanity

County: Riverside
Phone: 951-787- 6754

San Gorgonio Pass Area CA Habitat for Humanity

County: Riverside
Phone: 951-922-3944

Temecula Redevelopment Agency

County: Riverside
Phone: 951-694-6404

West Coast Resource Center Habitat for Humanity

County: Riverside
Phone: 951-256-4111 ext. 109

Elk Grove Rural Development

County: Sacramento
Phone: 916-714-1104 ext. 4

Emergency Repair and Accessibility Grant Program

County: Sacramento
Phone: 916-264-1500

Exterior Accessibility Grant for Renters (EAGR) Program

County: Sacramento
Phone: 916-264-1500

Home Assistance and Repair Program for Seniors (HARPS)

County: Sacramento
Phone: 916-264-1515

Sacramento Habitat for Humanity

County: Sacramento
Phone: 916-440-1215

Salinas Rural Development

County: San Benito
Phone: 831-757-5294 ext. 4

Big Bear Valley Habitat for Humanity

County: San Bernardino
Phone: 909-866-0924

City of Ontario Housing and Neighborhood Revitalization Agency

County: San Bernardino
Phone: 909-395-2006

Community Action Partnership

County: San Bernardino
Phone: 909-891-3863

High Desert Habitat for Humanity

County: San Bernardino
Phone: 760-247-9971

ity of Redlands Redevelopment Department

County: San Bernardino
Phone: 909-335-4755

Loma Linda Redevelopment Agency Housing Program Line

County: San Bernardino
Phone: 909-799-2838

Neighborhood Housing Services of Inland Empire

County: San Bernardino
Phone: 909-884-6891

Neighborhood Partnership Housing Services of Montclair

County: San Bernardino
Phone: 909-988-5979

Old Timers Foundation

County: San Bernardino
Phone: 909-829-0384

Redlands Habitat for Humanity

County: San Bernardino
Phone: 909-307-2362

San Bernardino County Energy Conservation/Weatherization Program

County: San Bernardino
Phone: 909-885-1219

San Bernardino Department of Aging and Adult Services (DAAS)

County: San Bernardino
Phone: 909-891-3900

San Bernardino Department of Community Development and Housing

County: San Bernardino
Phone: 909-388-0950

Victorville Rural Development

County: San Bernardino
Phone: 760-843-6882 ext. 4

City of Escondido Minor Home Repair Program ? Caring Neighbors

County: San Diego
Phone: 760-737-8640

City of La Mesa Community Development Dept.

County: San Diego
Phone: 619-667-1192

City of La Quinta Community Development

County: San Diego
Phone: 760-777-7000

City of San Marcos Redevelopment Agency

County: San Diego
Phone: 760-744-1050 ext. 3116

Clifford Habitat for Humanity

County: San Diego
Phone: 858-571-2882

El Centro Rural Development

County: San Diego
Phone: 760-352-4418 ext. 4

Escondido Housing Division

County: San Diego
Phone: 760-839-4841

San Diego Habitat for Humanity

County: San Diego
Phone: 619-283-4663

San Diego Nonprofit Federation for Housing & Community Development

County: San Diego
Phone: 619-239-6693

Solana Beach City of Community Development

County: San Diego
Phone: 858-720-2440

Vista Housing Rehabilitation Loan Program

County: San Diego
Phone: 760-639-6191

Salinas Rural Development

County: San Francisco
Phone: 831-757-5294 ext. 4

San Francisco Habitat for Humanity

County: San Francisco
Phone: 415-406-1555

SF City & County Redevelopment Agency

County: San Francisco
Phone: 415-749-2400

Calaveras Habitat for Humanity

County: San Joaquin
Phone: 209-754-5331

City of Stockton Housing and Redevelopment Department

County: San Joaquin
Phone: 209-937-8539

San Joaquin Community Development Dept. Neighborhood Preservation

County: San Joaquin
Phone: 209-468-3175

San Joaquin County Habitat for Humanity

County: San Joaquin
Phone: 209-465-5054

Stockton Rural Development

County: San Joaquin
Phone: 209-472-7127

City of San Luis Obispo Housing Grant Program

County: San Luis Obispo
Phone: 805-781-7523

Economics Opportunity Commission - Home Repair/Disabled Assistance Program

County: San Luis Obispo
Phone: 805-541-4122

San Luis Obispo County Habitat for Humanity

County: San Luis Obispo
Phone: 805-782-0687

San Luis Obispo Economic Opportunity Commission (EOC) - Senior Home Repair Program

County: San Luis Obispo
Phone: 800-495-0501

Santa Maria Rural Development

County: San Luis Obispo
Phone: 805-928-5340 ext. 4

Belmont Community Development

County: San Mateo
Phone: 650-595-7416

Center for Independence of the Disabled - Housing Accessibility Modification Program

County: San Mateo
Phone: 650-595-0783

Daly City Housing Rehabilitation and Community Development Program

County: San Mateo
Phone: 650-991-8068

Peninsula Habitat for Humanity

County: San Mateo
Phone: 650-368-7434

Salinas Rural Development

County: San Mateo
Phone: 831-757-5294 ext. 4

San Mateo Neighborhood Improvement and Housing Division

County: San Mateo
Phone: 650-522-7220

Northern Santa Barbara County Habitat for Humanity

County: Santa Barbara
Phone: 805-928-5399

Santa Barbara Family Service Agency - Services Aimed at Independent Living (SAIL)

County: Santa Barbara
Phone: 805-965-1001

Santa Maria Rural Development

County: Santa Barbara
Phone: 805-928-5340 ext. 4

Southern Santa Barbara County Habitat for Humanity

County: Santa Barbara
Phone: 805-692-2226

USDA Service Center Rural Development

County: Santa Barbara
Phone: 805-928-9269 ext. 4

City of Morgan Hill Housing and Redevelopment Agency

County: Santa Clara
Phone: 408-776-7373

City of San Jose Housing Department Home Repair Program

County: Santa Clara
Phone: 408-975-4459

Economic and Social Opportunities (ESO)

County: Santa Clara
Phone: 408-971-0888

Mountain View/Los Altos Community Services

County: Santa Clara
Phone: 650-968-0836

O'Connor Hospital-Senior Initiative Program

County: Santa Clara
Phone: 408-947-2500

Salinas Rural Development

County: Santa Clara
Phone: 831-757-5294 ext. 4

Santa Clara County Home Access/ Handyworker Program

County: Santa Clara
Phone: 408-971-2560

Silicon Valley Habitat for Humanity

County: Santa Clara
Phone: 408-942-6444

City of Watsonville Housing & Redevelopment Department

County: Santa Cruz
Phone: 831-728-6014

Salinas Rural Development

County: Santa Cruz
Phone: 831-757-5294 ext. 4

Santa Cruz County Habitat for Humanity

County: Santa Cruz
Phone: 831-685-0671

County of Shasta Housing and Community Action Programs

County: Shasta
Phone: 530-225- 5160

Redding Redevelopment Agency

County: Shasta
Phone: 530-226-2560

Self-Help Home Improvement Project

County: Shasta
Phone: 530-378-6900

Shasta Cascade Habitat for Humanity

County: Shasta
Phone: 530-243-5693

Auburn Rural Development

County: Sierra
Phone: 530-885-7081 ext. 4

Siskiyou Habitat for Humanity

County: Siskiyou
Phone: 530-938-2612

Yreka Rural Development

County: Siskiyou
Phone: 530-842-6123 ext. 4

Elk Grove Rural Development

County: Solano
Phone: 916-714-1104 ext. 4

Fairfield Housing Rehabilitation Program

County: Solano
Phone: 707-428-7688

Solano/Napa Habitat for Humanity

County: Solano
Phone: 707-422-1948

City of Napa Redevelopment Agency

County: Sonoma
Phone: 707-257-9502

Community Resources for Independence (CRI) Sonoma County & City of Napa Housing Access Modifications (HAM) Program

County: Sonoma
Phone: 707-528-2745

Rohnert Community Development Commission

County: Sonoma
Phone: 707-588-2212

Santa Rosa Rural Development

County: Sonoma
Phone: 707-526-6797 ext. 4

Sonoma County Community Development Commission

County: Sonoma
Phone: 707-565-7542

Sonoma County Habitat for Humanity

County: Sonoma
Phone: 707-578-7707

City of Modesto Recreation and Neighborhoods Division Emergency Home Repair/ Disabled Access Assistance Program

County: Stanislaus
Phone: 209-577-5245

Modesto Rural Development

County: Stanislaus
Phone: 209-491-9320 ext. 4

Stanislaus County Habitat for Humanity

County: Stanislaus
Phone: 209-575-4585

Yuba City Rural Development

County: Sutter
Phone: 530-673-4347 ext. 4

Red Bluff Rural Development

County: Tehama
Phone: 530-527-1013 ext. 4

Redding Rural Development

County: Trinity
Phone: 530-226-2560

Tulare Community Development/Redevelopment Agency

County: Tulare
Phone: 559- 773-6291

Tulare County Habitat for Humanity

County: Tulare
Phone: 559-734-4040 ext. 100

Visalia Rural Development

County: Tulare
Phone: 559-734-8732 ext. 4

Modesto Rural Development

County: Tuolumne
Phone: 209-491-9320 ext. 4

Tuolumne County Habitat for Humanity

County: Tuolumne
Phone: 209-536-0970

City of Oxnard Redevelopment Agency

County: Ventura
Phone: 805-385-7400

Santa Maria Rural Development

County: Ventura
Phone: 805-928-5340 ext. 4

Simi Valley CDBG

County: Ventura
Phone: 805-583-6870

Ventura County Area Agency on Aging

County: Ventura
Phone: 805-477-7300

Ventura County CDBG

County: Ventura
Phone: 805-654-2679

Ventura County Habitat for Humanity

County: Ventura
Phone: 805-485-6065

Davis Rural Development

County: Yolo
Phone: 530-792-5800

Yolo County Habitat for Humanity

County: Yolo
Phone: 530-668-4301

Yuba City Rural Development

County: Yolo
Phone: 530-673-4347 ext. 4

Davis Rural Development

County: Yuba
Phone: 530-792-5800

Yolo County Habitat for Humanity

County: Yuba
Phone: 530-668-4301

Yuba City Rural Development

County: Yuba
Phone: 530-673-4347 ext. 4