TL;DR: A wedding for 100 guests in Antioch, CA typically runs $32,000 – $55,000, with most couples landing around $42,000 once you factor in East Bay venue rentals, Bay Area catering rates, and standard vendor markups. Expect catering and venue to eat roughly 55% of your total.
Useful summary
A 100-guest wedding is the sweet spot where per-head catering costs dominate your budget more than any fixed vendor fee. In Antioch and the broader East Contra Costa area, you're paying Bay Area-adjacent labor rates without full San Francisco venue premiums — which is the main reason local budgets come in 15–25% lower than an equivalent wedding in Walnut Creek or Oakland.
Plan on roughly $320 – $550 per guest, all-in. If that feels wide, it is — the swing depends almost entirely on three choices: whether you hire a full-service caterer or a buffet-style one, whether your venue includes tables/chairs/linens, and whether you serve a full open bar.
Variable data table
Here's a realistic allocation for a $42,000 wedding with 100 guests in Antioch, CA:
| Category | Typical range | % of budget | Notes |
|---|---|---|---|
| Venue (rental + fees) | $6,000 – $12,000 | 18% | Lower for winery/park; higher for full-service ballroom |
| Catering (food + staff) | $10,000 – $18,000 | 32% | $100–$180 per head is standard locally |
| Bar & beverages | $2,500 – $5,500 | 9% | Beer/wine only saves ~40% vs. full open bar |
| Photography | $3,500 – $6,500 | 12% | 8-hour coverage + edited gallery |
| Videography | $2,000 – $4,500 | 7% | Optional; skip to save |
| Flowers & décor | $2,500 – $5,000 | 8% | Scales with centerpiece count |
| Attire (both partners) | $1,800 – $4,500 | 6% | Includes alterations |
| Music/DJ | $1,500 – $3,000 | 4% | Live band adds $3,000+ |
| Cake & desserts | $500 – $1,200 | 2% | $6–$10 per slice |
| Stationery & signage | $400 – $900 | 1% | Digital RSVPs cut this in half |
| Officiant, license, tips | $800 – $1,500 | 1% |
Total: ~$32,000 on the lean end, ~$55,000 on the higher end.
Local context
Antioch sits in East Contra Costa County, which gives you three real venue categories to work with:
- Delta waterfront venues near the San Joaquin River and Antioch Marina — picturesque, generally $4,000–$8,000 in rental fees, but you're bringing in most vendors.
- Winery and vineyard venues a short drive into Brentwood and the Livermore Valley — expect $6,000–$10,000 in site fees, often with in-house catering.
- Banquet halls and country clubs in Antioch, Brentwood, and Oakley — the Lone Tree Golf Course area is popular — typically $5,000–$9,000 with inclusive packages that bundle tables, chairs, and coordination.
Climate note: Antioch summers hit 95–100°F regularly from July through September. If you're planning an outdoor ceremony, you need a shade or tent plan, and your caterer will charge more for hot-weather staffing and ice. May, June, and October are the most comfortable months and also the most expensive — book 10–14 months out.
Sales tax in Contra Costa County is 9.75%, which applies to catering food and rentals. Don't forget to add it to vendor quotes before comparing.
Internal links
- For a full category-by-category planning walkthrough, start with our wedding budget guide.
- To run custom numbers for your own guest count and priorities, use the wedding budget calculator.
- Want a timeline that keeps spending on track? The wedding checklist guide sequences every booking decision.
Tool CTA
The fastest way to pressure-test your number is to plug your actual venue quote and guest count into our calculator — it'll flag where you're over-allocated compared to real Bay Area weddings at your size.
FAQ
Is $42,000 really the average for 100 guests in Antioch?
It's the median for a mid-tier wedding with full catering, an open bar, professional photo, DJ, and florals. Couples doing a backyard wedding with a taco caterer and beer/wine regularly land at $22,000–$28,000. Couples at premium winery venues with a live band easily hit $60,000+.
How much should I budget per guest?
Plan for $320 – $550 per guest all-in for an Antioch wedding. Food and beverage alone runs $130–$230 per head with service and tax, and the rest is the fixed-cost vendors (photo, DJ, flowers, attire) spread across your guest count.
What's the single biggest way to cut costs?
Switch from a full open bar to beer and wine only — this saves $1,500–$3,000 for 100 guests and almost no one complains. The second biggest lever is choosing a venue that includes tables, chairs, and linens rather than one where you rent everything separately.
Do I need a wedding planner at this budget?
A month-of coordinator ($1,200–$2,500 locally) is worth it at 100 guests — you have enough vendors that someone needs to run the day. Full-service planners ($5,000+) make sense above $60,000 in total spend or if you're planning remotely.
How far in advance should I book vendors in Antioch?
Book your venue 10–14 months out for peak season (May, June, September, October). Photographers and caterers go 8–12 months ahead. Florist, DJ, and officiant can be booked 4–6 months out without much premium.
Does 100 guests actually mean 100 people eating?
Budget for about 85–90 confirmed plates when you send 100 invites, because typical decline rates run 10–15% for local weddings and 20–30% if many guests travel. Confirm final counts with your caterer 10 days out — you usually pay for the guaranteed count even if people no-show.
What's a realistic "lean but not cheap" budget?
Around $28,000 – $32,000 works in Antioch if you pick a venue with inclusive rentals, use a buffet caterer at $85–$100 per head, do beer/wine only, skip videography, and keep florals to ceremony + centerpieces without elaborate installations.
Sources
- The Knot 2024 Real Weddings Study
- WeddingWire Newlywed Report (Bay Area regional data)
- U.S. Bureau of Labor Statistics — Consumer Price Index, San Francisco–Oakland–Hayward
- California Department of Tax and Fee Administration (sales tax rates)
Related
- Wedding Budget Calculator
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- Wedding Budget for 50 Guests in Houston, TX
- Wedding Budget for 75 Guests in Houston, TX
- Wedding Checklist Guide
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