Arntz Builders, Inc.
$38.8Mnot to exceed, approved on consent
12items approved on consent
15official Legistar records, all years
About this vendor
A general contractor based in Petaluma, California, that builds commercial and public works projects in Northern California. It does both new construction and renovation work.
- Registered name
- Arntz Builders, Inc.
- Type
- Company
- Website
- arntzbuilders.com
- Phone
- 707-835-2900
- Address
- 431 Payran Street, Petaluma, CA 94952
Researched by AI from public sources on Oct 2, 2026, checked by a second, independent AI review, with every contact detail matched to a cited page. Not from OUSD or Legistar; may be incomplete or out of date. Sources: Arntz Builders, Inc., Arntz Builders, Inc. Contact, Central Administrative Center at Cole Campus.
What the district contracts them for
Categories and action types are this tool's classification (AI-assigned, then checked), not Legistar fields. How this works.
Official information from Legistar
Legistar has no vendor profile; a vendor appears only as the vendor number on each record. These fields come from the official records listed at the bottom of this page.
- OUSD vendor number
000493- Named in the agenda text as
- Arntz Builders, Inc.
- Presenting offices
- Deputy Chief, Facilities Planning and Management (13); Community Advisory Committee-Programs for Exceptional Children (1); Facilities Committee (1)
- Record types
- Agreement or Contract (14); Discussion Item (1)
- Funding sources
- 9655/9805; Fud 21 Building Fund Measure Y; Fund 21 Building Fund Measure Y; Fund 21 Building Fund, Measure Y; Fund 21 Building Funds Measure Y; Fund 21 Building Funds, Measure Y; Fund 21, Building Fund Measure Y; Fund 21, Measure J; Fund 21/Measure Y
- Resource / site codes
9650-1099655 1099655 1319655 1999655 2019655 2129655-1099655/1099655/1319655/9805
Approved on the consent report (12)
- Adds $440,000 and 296 days to Arntz Builders' Claremont Middle School kitchen and multi-purpose room jobMay 14, 2025 ·
M.-3·25-0927· Jun 23, 2022 – Aug 9, 2024 · Adopted on the General Consent ReportAfter work beganRaises existing contractMulti-year+$440Knew total $16.7M - Adds $202,130.36 to Arntz Builders' contract for extra work on Claremont Middle School's kitchen projectMar 26, 2025 ·
M.-1·25-0462· Adopted on the General Consent ReportRaises existing contract+$202Knew total $16.3M - Adds $500,000 and 330 days to Arntz Builders' Laurel Child Development Center jobJan 8, 2025 ·
M.-5·24-2951· Jun 23, 2022 – Aug 16, 2024 · Adopted on the General Consent ReportAfter work beganRaises existing contractMulti-year+$500Knew total $14.7M - Adds $72,307.84 to Arntz Builders' Claremont Middle School kitchen projectJan 8, 2025 ·
M.-8·24-2981· Adopted on the General Consent ReportRaises existing contract+$72Knew total $16.1M - Adds $355,279 for Arntz Builders' extra work on the Cole Campus administration centerJun 26, 2024 ·
U.-6·24-1464· Adopted on the General Consent ReportRaises existing contract+$355Knew total $43.6M - Adds $889,233.18 to Arntz Builders' contract for the new Cole Campus district office buildingMay 22, 2024 ·
U.-7·24-1086· Adopted on the General Consent ReportRaises existing contract+$889Knew total $43.2M - Adds $726,923.26 to Arntz Builders' contract for the new Cole Campus administration buildingNov 16, 2023 ·
E.-14·23-2441· Adopted on the General Consent ReportAfter work beganRaises existing contract+$727Knew total $40M - Adds $726,766 to Arntz Builders' contract for the Cole Campus Central Administration CenterAug 23, 2023 ·
U.-2·23-1146· Adopted on the General Consent ReportRaises existing contract+$727Knew total $39.3M - Awards Arntz Builders $1.93M for site work for Roosevelt Middle School's portables and science buildingMay 24, 2023 ·
U.-6·23-1144· May 25, 2023 – Jul 31, 2023 · Adopted on the General Consent Report$1.93M - Adds $2.82M to Arntz Builders' Cole Campus contract for contaminated soil removalNov 30, 2022 ·
T.-1·22-2475· AdoptedVoted on separatelyRaises existing contract+$2.82Mnew total $38.6M - Awards Arntz Builders $15.99M to build Claremont Middle School's multi-purpose room and kitchenJun 22, 2022 ·
V1.-1·22-1167· Jun 23, 2022 – Aug 31, 2023 · Adopted on the General Consent ReportMulti-year$16M - Awards Arntz Builders $14.17M to replace the Laurel Child Development CenterJun 22, 2022 ·
V1.-3·22-1325· Jun 23, 2022 – Sep 21, 2023 · Adopted on the General Consent ReportMulti-year$14.2M
All Legistar records (15)
Every Legistar record carrying this vendor number in any year, on consent or not, plus records Legistar links to this vendor's consent items (for example, an amendment's original agreement). Newest first.
| Date | File | Official title | Type | Status |
|---|---|---|---|---|
| Dec 31, 2025 | 24-0186 | Community Advisory Committee - Special Education AnnouncementsCommunity Advisory Committee-Programs for Exceptional Children · Related: 24-1464 | Discussion Item | Committee, New Business |
| May 14, 2025 | 25-0927 | Change Order No. 3, Agreement Between Owner and Contractor – Arntz Builders, Inc. – Claremont Middle School Multi-Purpose Room & Kitchen Project –Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 25-0718 · Related: 22-1167, 24-2981, 25-0462 · Plain-English summary | Agreement or Contract | Passed |
| Mar 26, 2025 | 25-0462 | Change Order No. 2, Agreement Between Owner and Contractor – Arntz Builders, Inc. – Claremont Middle School Multi-Purpose Room & Kitchen Project –Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 25-0421 · Related: 25-0927 · Plain-English summary | Agreement or Contract | Passed |
| Jan 8, 2025 | 24-2981 | Change Order No. 1, Agreement Between Owner and Contractor – Arntz Builders, Inc. – Claremont Middle School Multi-Purpose Room & Kitchen Project – Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 24-2383 · Related: 22-1167, 25-0927 · Plain-English summary | Agreement or Contract | Passed |
| Jan 8, 2025 | 24-2951 | Changer Order No. 1, Agreement Between Owner and Contractor - Arntz Builders, Inc. – Laurel Child Development Center (CDC) Replacement Project – Division of Facilities Planning & ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 24-2380 · Plain-English summary | Agreement or Contract | Passed |
| Jun 26, 2024 | 24-1464 | Change Order No. 6, Agreement Between Owner and Contractor – Arntz Builders, Inc. – Cole Campus Central Administration Center Project–Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 24-1345 · Related: 21-1746, 22-2475, 23-1146, 23-2441, 23-2701, 24-0186 · Plain-English summary | Agreement or Contract | Passed |
| May 22, 2024 | 24-1086 | Change Order No. 5, Agreement Between Owner and Contractor – Arntz Builders, Inc. – Cole Campus Central Administration Center Project–Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 24-1052 · Plain-English summary | Agreement or Contract | Passed |
| Jan 24, 2024 | 23-2701 | Change Order No. 4, Agreement Between Owner and Contractor - Arntz Builders, Inc. - Cole Campus Central Administration Center Project - Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 24-0101 · Related: 22-2475, 23-1146, 23-2441, 24-1464 | Agreement or Contract | Passed |
| Nov 16, 2023 | 23-2441 | Change Order No. 3, Agreement Between Owner and Contractor - Arntz Builders, Inc. - Cole Campus Central Administration Center Project - Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 23-1943 · Related: 23-2701, 24-1464 · Plain-English summary | Agreement or Contract | Passed |
| Aug 23, 2023 | 23-1146 | Change Order No. 2, Agreement Between Owner and Contractor – Arntz Builders, Inc. – Cole Campus Central Administration Center Project–Division of Facilities Planning and ManagementFacilities Committee · Enactment no. 23-1486 · Related: 23-2701, 24-1464 · Plain-English summary | Agreement or Contract | Passed |
| May 24, 2023 | 23-1144 | Agreement Between Owner and Contractor – Arntz Builders, Inc. – Roosevelt Middle School Modernization- Interim Housing Increment 1 and Science Modular Building Increment 1 Project – Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 23-1055 · Plain-English summary | Agreement or Contract | Passed |
| Nov 30, 2022 | 22-2475 | Change Order No. 1, Agreement Between Owner and Contractor - Arntz Builders, Inc.. - Cole Campus Central Administration Center Project - Division of Facilities Planning and ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 22-2065 · Related: 23-2701, 24-1464 · Plain-English summary | Agreement or Contract | Passed |
| Jun 22, 2022 | 22-1325 | Agreement Between Owner and Contractor - Competitively Bid – Arntz Builders, Inc. – Laurel Child Development Center (CDC) Replacement Project – Division of Facilities Planning & ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 22-1341 · Plain-English summary | Agreement or Contract | Passed |
| Jun 22, 2022 | 22-1167 | Agreement Between Owner and Contractor - Competitively Bid - Arntz Builders, Inc. - Claremont Middle School Multi-Purpose Room & Kitchen Project - Division of Facilities Planning & ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 22-1339 · Related: 24-2981, 25-0927 · Plain-English summary | Agreement or Contract | Passed |
| Jun 30, 2021 | 21-1746 | Agreement Between Owner and Contractor - Competitively Bid –Arntz Builders, Inc. – Cole Campus Central Administration Center Project – Division of Facilities Planning & ManagementDeputy Chief, Facilities Planning and Management · Enactment no. 21-1188 · Related: 24-1464 | Agreement or Contract | Passed |