COSC Business Members
Business Lifetime Members
Metro Waste Authority
300 East Locust Street, Suite 100
Des Moines, IA 50309
(515) 244-0021
RDG Planning & Design
301 Grand Ave.
Des Moines, IA 50309
(515) 288-3141
Silent Rivers Design + Build
9205 Swanson Blvd.
Clive, IA 50325
(515) 266-6702
Business Members
A TECH Inc./Easy Living Store
1049 Hickman Rd.
Des Moines, IA 50322
(515) 276-5040
Abante Contemporary Furnishings
2005 NW 100th St.
Clive, IA 50325
(515) 278-8621
Air Tight Foam Insulation, LLC
31403 Chardonnay Pr.
Waukee, IA 50263
(515) 460-1014
Allegro Custom Homes
5514 Kennedy Street,
Prole, IA 50229
(515) 962-0201
Alliant Energy
200 1st St. SE
Cedar Rapids, IA 52401
(319) 786-8186
Applied Art & Technology
2430 106th ST.
Des Moines, IA 50322
(515) 331-7400
Bankers Trust Iowa
717 7th Street
Des Moines, IA 50309
(800) 362-1688
Barbara Massman, Realtors
1510 Laurel Drive
Decorah, IA 52101
(563) 382-5712
Barker Lemar & Associates, Inc.
1801 Industrial Circle
West Des Moines, IA 50265
(515) 256-8814
Beisser Lumber Company
5300 Beisser Drive
Grimes, IA 50111
(515) 225-2350
Berrington Marble Manufacturing LLC
520 SW 5th St
Des Moines, IA 50309
(515) 288-4141
Campbell's Nutrition
4040 University Ave
Des Moines, IA 50311
(515) 277-6351
Cantebury Homes
8851 Golf Circle
West Des Moines, IA 50266
(515) 306-7962
Cenergy
PO Box 906
Waukee, IA 50263
(515) 710-9710
Center for Energy and Environmental Education (CEEE)
University of Northern Iowa
Cedar Falls, IA 50614-0293
(319) 273-2573
Central Iowa Power Cooperative (CIPCO)
1400 Highway 13
Cedar Rapids, IA 52403
(319) 366-8011
City of Cedar Rapids
825 17th St. SE
Cedar Rapids, IA 52403
(319) 362-7853
City of Des Moines
400 Robert D. Ray Drive
Des Moines, Iowa 50309-1891
(515) 283-4500
City of Indianola
110 N. 1st St.
PO Box 299
Indianola, IA 50125
(515) 961-9430
City of Iowa City
410 E Washington St.
Iowa City, IA 52240
(319)356-5000
City of Parkersburg
City of Perry
908 Willis Ave
Perry, IA 50220
(515) 465-2481
City of West Des Moines
4200 Mills Civic Pwky.
West Des Moines, IA 50265
(515) 222-3620
Coldwell Banker
2120 Rittenhouse Street, Suite A
Des Moines, IA 50321
(515) 229-9503
Community Housing Development Corporation (CHDC)
601 Forest Ave
Des Moines, IA 50314
(515) 244-7798
Corn Belt Power
1300 13th St. N.
Humboldt, IA 50548
(515) 332-2571
Design 515
1225 River Vista Drive
Des Moines, IA 50315
Designsmith
333 E. Grand Ave. #108
Des Moines, IA 50309
(515) 288-9618
DPO Construction
4268 Turkey Creek Rd. NE
Iowa City, IA 52240
(319) 351-2879
EarthPark
1533 Linden St., Suite 200
Des Moines, IA 50309
(515) 243-9300
Eco Builders of Iowa
1941 Grande Ave. SE
Cedar Rapids, IA 52403
(319) 929-1941
enrgPATH
3920 Valdez Drive
Des Moines, IA 50310
(515) 205-5494
Fair World Gallery
116 5th St.
West Des Moines, IA 50265
(515) 277-7750
First Call Construction
7195 NW 54th Ave
Urbandale, IA 50322
(515) 253-2610
First Class Credit Union
303 Euclid Ave
Des Moines, IA 50313
(515) 282-7363
Fishaus Craftsman Builders
1406 66th St
Des Moines, IA 50311
(515) 279-1961
Fleishman Construction Services
150 Jefferson St.
Carlisle, IA 50047
(515) 989-9819
Foam-Works
3308 Remington St.
Cedar Rapids, IA 52404
(319) 981-6608
Frameco
Gilcrest/Jewett Lumber Company
1100 Alice’s Road
P.O. Box 1000
Waukee, IA 50263
(515) 987-3600
Glenstone Village
5555 Glenstone Dr
Grimes, IA 50111
(515) 986-5502
Golden Rule Plumbing, Heating & Geothermal
804 N Main St.
Grimes, IA 50111
(515) 243-7152
Grand Homes & Renovations
PO Box 33
Altoona, IA 50009
(515) 967-6195
Greater Des Moines Community Foundation
Finkbine Mansion
1915 Grand Avenue
Des Moines, IA 50309
(515) 883-2626
Greater Des Moines Habitat for Humanity
2341 2nd Avenue
PO Box 716
Des Moines, IA 50303
(515) 471-8686
Green Building Supply
508 N. 2nd Street
Fairfield, IA 52556
(800) 405-0222
Habitat for Humanity of Iowa
103 E. State St. Suite 302
Mason City, IA 50401
(641) 210-4988
Historic Valley Junction Foundation
217 Fifth Street
West Des Moines, IA 50265
(515) 222-3642
Holcim (US) Inc.
1840 N Federal
Mason City, IA 50401
(641) 421-3312
Home Builders Association of Greater Des Moines
6751 Corporate Dr
Johnston, IA 50131
(515) 270-8500
HOME, Inc.
1111 9th St # 210
Des Moines, IA 50314
(515) 243-1277
The Housing Fellowship
322 E 2nd St
Iowa City, IA 52240
(319) 358-9212
Hubbell Homes
6900 Westown Parkway
West Des Moines, IA 50266
(515) 243-3228
Ide Concrete Homes
PO Box 268
Johnston, IA 50131-0268
(515) 771-5439
Iowa - Des Moines Supply
1680 Guthrie Ave
Des Moines, IA 50316
(515) 263-1200
Iowa Association of Energy Efficiency (IAEE)
PO Box 66001
West Des Moines, IA 50265
(515) 287-7021
Iowa Central Community College
330 Avenue M
Fort Dodge, IA
(515) 576-7201
Iowa Dept. of Economic Development
200 East Grand Avenue
Des Moines, IA 50309
(515) 242-4700
Iowa Department of Natural Resources
502 E. 9th Street
Des Moines, IA 50319-0034
(515) 281-5918
Iowa Environmental Council (IEC)
521 E Locust St # 220
Des Moines, IA 50309
(515) 244-1194
Iowa Foundation for Education, Environment and the Arts
4222 Forest Ave.
Des Moines, IA
Iowa Home Crafters Inc.
2320 Stagecoach Road
Ames, IA 50010
(515) 292-5274
Iowa Ready Mixed Concrete Association
380 S.E. Delaware Avenue
Ankeny, Iowa 50021
(515) 965-4575
Iowa Recycling Association (IRA)
2742 E Market St
Des Moines, IA 50317
(515) 265-1596
Iowa Spray Foam Insulators
1706 Edgewood Dr.
Carroll, IA 51401
(712)830-2740
Iowa Valley Habitat for Humanity
2401 Scott Blvd SE
Iowa City, IA 52240
(319) 337-8949
Jacob Kvinlaug Design
1956 Underwood Avenue
Marshalltown, IA 50158
(641) 691-3911
Jerry's Homes
3301 NW 106th Circle
Urbandale, IA 50322
(515) 278-5992
Kaufman Construction
4328 N Dawson Ave.
Cumming, IA 50061
(515) 981-9352
Kinzler Construction Services
2335 230th Street
Ames, Iowa 50014
(888) 292-2382
Kitchen, Bath & Home
201 Main St
Ames, IA 50010
(515) 233-2604
Knight Building Company Inc
34342 Irving Court
Earlham, IA 50072
(515) 758-2527
Koopman Insealators
727 210th Ave
Pella, IA 50219
(641) 621-0503
Maher Products
P.O. Box 145
Mingo, IA 50168
(641) 363-4330
McKlveen Lumber Company
103 Madison St.
Prairie City, IA 50228
(515) 994-2691
McNair Geothermal
31043 R Ave
Adel, IA 50003
(515) 993-5267
Mechanical Engineering Dept.
Iowa State University
2025 Black
Ames, Iowa 50011-2161
(515) 294-1423
Meredith Corporation
1716 Locust Street
Des Moines, IA 50309-3023
(515) 284-3000
MidAmerican Energy
P.O. Box 657
Des Moines, IA 50306-0657
(888) 427-5632
Midwest Drafting & Design
Shawn Saltou
611 3rd Avenue West
Cresco, IA 52136
(641) 220-2626
Midwest Equipment Co.
4201 Antler Dr NE
Cedar Rapids, IA 52411
(515) 288-2222
Millard Lumber, Inc.
9850 Douglas Ave.
Urbandale, IA 50322
(515) 991-5046
Moehl Millwork, Inc.
5150 SE Rio Ct.
Ankeny, IA 50021
(515) 276-6791
Multimedia Imaging
9943 Hickman Rd., Ste. 107
Urbandale, IA 50322
(515) 309-3456
Neighborhood Finance Corporation
1912 6th Ave
Des Moines, IA 50314
(515) 246-0010
Nelson Construction Services
7465 Ashworth Rd.
West Des Moines, IA 50266
(515) 457-9000
Nelson Electric Company
239 South Bell Avenue
Ames, IA 50010
(515) 232-2445
Oakwood Homes
316 SW 5th St # 440
Des Moines, IA 50309
(515) 244-3491
Once Upon a Tree by Clayton Aronson
3927 69th St.
Urbandale, IA 50322
(515) 451-3801
Oskaloosa Downtown Development Group
124 North Market Street
Oskaloosa, IA 52577
(641) 672-2591
Piggott, Inc.
3815 Ingersoll Ave.
Des Moines, IA 50312
(515) 279-8879
Polk County Conservation
11407 NW Jester Park Drive
Granger, IA 50109
(515) 323-5300
Principal Financial Group
711 High St.
Des Moines, IA 50392
(800) 986-3343
ReBearth Products, Inc.
123 E Center St.
Truro, IA 50257
(641) 765-4781
Recycling & Reuse Technology Transfer Center (RRTTC)
8120 Jennings Dr. Suite 13
University of Northern Iowa
Cedar Falls, IA 50614-0184 (319) 273-3689
Renewal by Anderson
517 Railroad Ave.
West Des Moines, IA 50265
(515) 274-9700
Renu the View
520 75th Ct.
West Des Moines, IA 50266
515-279-8000
Richard Myers, GRI
Iowa Realty Co. Inc.
3424 E.P. True Parkway
West Des Moines, IA 50265
(515) 453-6100
RJ Construction
637 16th St.
Marion, IA 52302
(319) 373-9672
RoJohn Home Improvement
429 1st Ave S.
Fort Dodge, IA 50501
(515) 576-6301
Rowat Cut Stone & Marble Co.
110 SE 7th
Des Moines, IA 50309
(515) 244-8604
Ryan Companies
1501 50th St., Suite 100.
West Des Moines, IA 50266
(515) 309-8500
Savannah Homes, Inc.
800 S. 50th, Suite 101
West Des Moines, IA 50265
(515) 221-2333
Schaal Heating & Cooling Inc.
2701 6th Ave
Des Moines, IA 50313
(515) 288-3631
Schueller & Sons Reconstruction
503 W Platt St
Maquoketa, IA 52060
(563) 652-2926
Shaklee
140 SW 51st St
Des Moines, IA 50312
(515) 255-1377
Sherwin-Williams
515 16th St.
Des Moines, IA 50309
515-291-7543
Smart Homes Inc.
1000 Pleasant Plain Rd. #202
Fairfield, IA 52556
(641) 919-8460
Superior Stoneworks
6725 NW 8th Ct.
Saylorville, IA 50313
(515) 313-1700
Taoton Builders
Tom Massman Construction, Inc
Massman Ranch
1510 Laurel Drive
Decorah, Iowa 52101
(563) 382-5712
Townsend Vision, Inc.
Walsh Door & Hardware Co.
2600 Delaware Ave.
Des Moines, IA 50317
(515) 262-9822
Wells Fargo Home Mortgage
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