Underused Venue Marketplace

The Problem

A 300-seat church sanctuary in a mid-size city is in use for roughly six hours a week. A CrossFit box with 2,000 square feet of open floor is dead from 10am to 4pm every weekday. A nightclub with a sound system, a bar, and a lighting rig sits dark until 9pm. All three are carrying a mortgage or a lease against a building that generates revenue during a small fraction of the hours it exists. The finance committee at the church knows this. The gym owner running on thin margins knows this. Neither of them has any idea how to turn it into money, because the work involved — photographing the space, writing a listing, pricing it, screening inquiries, handling contracts, sorting out insurance — is a job nobody at either organization has.

On the other side, an event planner putting together a 60-person product launch is looking at hotel ballrooms that quote $4,000 with a food-and-beverage minimum attached, or a warehouse venue booked out eight months. The interesting spaces — the ones with character, the ones that make an event feel like something — are the ones sitting empty, and they are invisible because they do not think of themselves as venues. Nobody has told the church that its fellowship hall is exactly what a 40-person workshop is looking for.

The demand is documented and the budgets are moving in the right direction: roughly 74% of event marketers expected budget increases in 2025, and the communities are dense and findable — r/Weddingsunder10k alone has 657K+ members, all of them explicitly optimizing for venue cost. Peerspace and Splacer proved the marketplace model works for photo shoots and creative rentals. Neither has gone after the specific supply pool of institutional spaces — houses of worship, fitness studios, community halls, clubs — where the owner is not a hospitality operator and needs the listing work done for them.

The Solution

A supply-first marketplace that treats onboarding as the product. Rather than building a listing form and hoping venue owners fill it out, the operator does a concierge intake for every space in the first city: a scheduled visit, phone photos shot to a fixed shot list, a listing written from a template, and a price set from comparable bookings in the market. The venue owner's total effort is answering a 15-minute questionnaire and approving a calendar.

Everything downstream is standard marketplace mechanics with two additions that matter specifically for this supply type. First, a house-rules layer: a church can specify no alcohol, no amplified music after 9pm, and blackout dates for services; a gym can block equipment areas. These constraints are encoded and enforced at booking time rather than negotiated over email. Second, per-event liability coverage bundled into the booking fee, because the single most common reason an institutional space owner says no is that nobody can tell them what happens if a guest breaks something.

How it works:

1. Concierge intake — Visit the space, shoot to a fixed 12-photo list, write the listing, and set a price from local comparables. The owner answers a questionnaire and approves.
2. Encode the rules — House rules, blackout dates, and off-limits areas go in as hard booking constraints, not as notes buried in a description.
3. Book and protect — Planner books and pays through the platform; per-event liability coverage is bundled into the service fee; funds hold until 24 hours after the event.
4. Settle and review — Payout to the venue, two-sided review, and a damage-claim window with photo documentation from both sides.

The reason to start with a single metro rather than launching nationally is the same reason every marketplace that survived did: liquidity is local. Forty genuinely bookable, well-photographed spaces in one city beats four hundred thin listings spread across twenty. The first city is a services business wearing a marketplace's clothes, and that is correct — the software only starts mattering at city three.

Market Research

The events industry is enormous, still growing, and the budget direction is favorable, but the number that matters most here is the utilization gap on the supply side:

• The global events industry grew from $1,227.3B in 2024 to $1,346.92B in 2025 (roughly 9.7% growth), and is projected to reach $1,930.26B by 2029 at about 9.4% CAGR (The Business Research Company). This is not a niche.
• Around 74% of event marketers expected budget increases in 2025 (Eventgroove industry statistics). Rising budgets with tight venue supply is the exact condition that makes an alternative-venue marketplace work.
• Roughly 24% of event professionals named technology advancement as a 2025 priority, with about half planning some form of AI integration — meaning planners are actively looking for better discovery tools rather than defaulting to a Rolodex.
• Traditional venues — hotels, banquet halls, purpose-built centers — hold an estimated 65–70% of the event space market, with adaptive-reuse venues at 15–20% and growing, and tech-enabled pop-up platforms at only 5–8%. The smallest slice is the fastest-growing one.
• r/Weddingsunder10k has 657K+ members, and Facebook event-space groups plus budget-venue YouTube channels (Jamie Wolfer's budget-venue content clears 100K+ views) form a distribution channel where "we found a beautiful space for $600" is inherently viral content.
• Marketplace take rates in this category run 15–20% on gross booking value across the established platforms, which sets both the pricing benchmark and the unit-economics floor.

Stage: growth phase, fragmented supply. The demand aggregators exist. The supply pool of institutional spaces is essentially untouched because reaching it requires field work rather than a signup funnel.

Competitive Landscape

Five real alternatives, and the gap between them is exactly where this sits:

• Peerspace — The category leader for hourly creative and event space. Excellent product, strong brand, real liquidity in major metros. Supply skews toward professional hosts, studios, and photo-shoot locations; institutional spaces like churches and gyms are barely represented, and hosts are expected to self-onboard. Host service fee around 15%, plus a guest-side service fee
• Splacer — Design-forward curation with a genuinely beautiful catalog of unique spaces. Narrower geographic footprint and a curation bar that excludes exactly the plain-but-functional community spaces that price-sensitive planners actually need. Host commission around 15%
• Giggster — Strong on film, photo, and production bookings with good search and integrated insurance options. Production-first positioning means an event planner is not the primary user, and the supply is optimized for shoot days. Host commission in the 12–15% range
• Tagvenue — Broad venue directory covering pubs, restaurants, and function rooms, particularly strong in the UK. More directory than marketplace — much of the transaction and negotiation still happens off-platform. Free listings, commission on completed bookings
• Convene and Industrious — Operators, not marketplaces: they lease and run premium event and workspace properties directly. Beautiful, expensive, and structurally incapable of reaching a 300-seat sanctuary in a second-tier city. Direct rental, premium pricing
• Direct outreach and Facebook groups — The actual status quo. A planner posts "anyone know a space for 50 people under $500?" in a local group and gets six replies. Free, entirely unreliable, and completely unsearchable a week later.

Your Opportunity

Every existing platform assumes a host who wants to be a host. The whole supply pool here is people who do not know they own a venue and would never fill out a listing form. Win on concierge onboarding — the operator does the photography, the copy, and the pricing — plus the two objections that actually block institutional yes: encoded house rules and bundled per-event liability coverage. Start with houses of worship in one metro, because they have the most square footage per hour of use, an existing motivation to generate non-donation revenue, and a referral network that runs on trust between congregations.

Business Model

Commission on gross booking value, which is the correct model because the venue side has zero appetite for a subscription against revenue that does not exist yet. The take rate splits across both sides so neither feels the full weight of it.

• Venue listing ($0) — Free to list, including the concierge photo and copy session in launch cities. Removing all upfront cost is the entire supply-acquisition strategy.
• Host commission (12% of booking value) — Deducted at payout. Below the 15% category norm, which is a concrete talking point when recruiting supply away from nothing.
• Guest service fee (8% of booking value) — Charged to the planner at checkout; covers payment processing and the bundled per-event liability policy.
• Featured placement ($99/mo) — Optional for venues that want top-of-category placement in their city and size band once liquidity exists.
• Agency accounts ($299/mo) — For event planning firms booking regularly: saved venue lists, multi-event invoicing, priority support, and reduced guest fees.

Unit Economics

• ~$650 — Target average booking value
• 20% — Blended take rate (12% host + 8% guest)
• ~$130 — Gross revenue per booking
• ~$40 — Insurance and payments cost per booking

At an average $650 booking and a 20% blended take, roughly 800 bookings per month produces about $104K in gross revenue. A single well-activated metro with 40 quality venues averaging 1.5 bookings per week gets you to roughly 260 bookings a month — call it a third of the way, from one city. The path to scale is repeating the concierge playbook city by city, and the compounding asset is the booking-price dataset, which is what lets the pricing recommendation get good enough to stop being manual.

Recommended Tech Stack

This is a transactional marketplace, so the hard parts are money movement, availability correctness, and search that respects constraints. None of it is novel — the risk is in getting the boring parts exactly right.

• Next.js 15 (App Router) on Vercel — Server Components for the search and listing pages so venue pages are fully crawlable; "space for rent in [city]" long-tail SEO is a primary acquisition channel and it has to be server-rendered.
• Supabase (Postgres + PostGIS + Auth) — Tables for venues, spaces, availability_rules, house_rules, bookings, payouts, reviews, damage_claims. PostGIS for radius search; RLS separating host, guest, and admin views.
• Stripe Connect (Express accounts) — Non-negotiable for a two-sided marketplace. Express onboarding for venue payouts, destination charges for the split, manual capture with funds held until 24 hours post-event, and Stripe-managed KYC so you are not handling identity documents.
• Cloudflare Images or Vercel Blob — Listing photography is the conversion lever. Store originals, serve responsive variants, and enforce the 12-shot list at upload so every listing looks consistent.
• Cal.com self-hosted or a custom availability engine — Availability is where marketplaces break. Recurring blackout rules (every Sunday 8am–1pm), one-off blocks, buffer times between bookings, and minimum booking duration all have to compose correctly.
• An embedded event-insurance API (Thimble, Next Insurance, or a broker partnership) — Quote per-event coverage at checkout based on headcount, alcohol, and space type, and bind the policy at booking. This is the feature that converts institutional supply.
• Resend + Twilio — Booking confirmations, 48-hour reminders, and post-event review prompts. Venue contacts at churches and gyms answer texts far more reliably than email.

AI Prompts to Build This

Copy and paste these into Claude, Cursor, or your favorite AI tool.

1. Marketplace Scaffold

Create a Next.js 15 App Router marketplace (TypeScript, Tailwind v4, Supabase) called "OffHours" — connecting underused institutional venues (churches, gyms, clubs, community halls) with event planners.
 
Supabase schema:
- venues(id, owner_user_id, name, type TEXT CHECK type IN ('worship','fitness','club','community','other'), address, lat, lng, geog GEOGRAPHY(POINT), city, description, status TEXT CHECK status IN ('draft','live','paused'), stripe_account_id)
- spaces(id, venue_id, name, capacity_seated INT, capacity_standing INT, square_feet INT, hourly_rate_cents INT, minimum_hours INT default 2, amenities JSONB, photos JSONB)
- house_rules(id, venue_id, no_alcohol BOOL, no_amplified_music_after TIME, restricted_areas TEXT[], custom_terms TEXT)
- availability_rules(id, space_id, kind TEXT CHECK kind IN ('recurring_block','one_off_block','open_window'), weekday INT, start_time TIME, end_time TIME, start_date DATE, end_date DATE)
- bookings(id, space_id, guest_user_id, starts_at TIMESTAMPTZ, ends_at TIMESTAMPTZ, headcount INT, subtotal_cents INT, host_fee_cents INT, guest_fee_cents INT, insurance_cents INT, status TEXT CHECK status IN ('pending','confirmed','completed','cancelled','disputed'), stripe_payment_intent_id)
- reviews(id, booking_id, author_role TEXT CHECK author_role IN ('host','guest'), rating INT, body TEXT)
- damage_claims(id, booking_id, filed_by, description TEXT, photo_urls TEXT[], amount_cents INT, status TEXT)
 
Enable PostGIS. RLS: hosts read/write only their own venues and the bookings against them; guests read their own bookings; live venue and space rows are publicly readable.
 
Routes: /[city] (browse), /space/[id] (listing, server-rendered for SEO), /book/[spaceId], /host (dashboard), /host/calendar, /admin/intake (concierge onboarding tool).
 
Stripe Connect Express for host payouts with destination charges. Env: STRIPE_SECRET_KEY, STRIPE_CONNECT_CLIENT_ID, SUPABASE_SERVICE_ROLE_KEY, RESEND_API_KEY, TWILIO_AUTH_TOKEN.

2. Availability Engine + Constrained Search

Build the availability engine and search. This is the part that quietly kills marketplaces when it is wrong — a double booking against a church on a Sunday morning is an unrecoverable trust failure.
 
Availability resolution (given space_id and a requested range):
1. Start from the space's open windows (default: all hours if no open_window rules exist).
2. Subtract every recurring_block matching the weekday and overlapping the time range.
3. Subtract every one_off_block whose date range overlaps.
4. Subtract confirmed bookings plus a configurable buffer on each side (default 60 minutes for setup and teardown).
5. Reject if the resulting duration is below the space's minimum_hours.
Return the resolved free intervals, never a naive boolean. Expose it as a pure function with unit tests covering DST transitions, overnight bookings, and back-to-back requests — those three cases are where the bugs live.
 
Search (/[city]):
- Filters: date and time range, headcount, max hourly rate, venue type, amenities, and radius from a point.
- Rank by: availability match first, then a completeness score (photo count, description length, review count), then distance. Do NOT rank purely by price — cheapest-first trains guests to see the marketplace as a discount channel.
- Apply house_rules as hard filters when the guest declares alcohol or amplified music in the search — never surface a listing that will reject the booking after the planner has fallen in love with the photos.
- Server-render results with unique title and meta per city and venue type for long-tail SEO.

3. Booking, Split Payment, and Insurance Binding

Implement the transaction flow with Stripe Connect and embedded per-event insurance.
 
Checkout:
1. Guest selects space, date range, and headcount, and declares alcohol yes/no and amplified music yes/no.
2. Re-validate availability server-side at submit time — never trust the client's earlier read.
3. Compute: subtotal = hourly_rate * hours; host_fee = 12% of subtotal; guest_fee = 8% of subtotal.
4. Call the event-insurance API for a quote using headcount, alcohol flag, and venue type. Show the coverage amount and premium as a distinct, clearly labelled line item — never bury it in a generic "service fee".
5. Create a Stripe PaymentIntent with capture_method: 'manual' and a transfer_data destination pointing at the venue's connected account, with application_fee_amount covering both platform fees.
 
Post-booking:
- Bind the insurance policy on confirmation; store the policy number and certificate URL on the booking; email the certificate to both parties (venues will ask for it, and having it instantly is a real differentiator).
- Capture the PaymentIntent 24 hours after ends_at, then release the transfer. That window is the damage-claim period.
- If a damage_claim is filed inside the window, hold capture, move the booking to 'disputed', and notify an admin. Never auto-resolve a dispute — a human reviews photo evidence from both sides.
- On completion, trigger two-sided review requests by email and SMS at 24 and 72 hours.
 
Cancellation policy: full refund more than 7 days out, 50% between 7 days and 48 hours, none inside 48 hours. Encode it as data on the venue row, not as hardcoded logic — different venue types will need different terms.

4. Concierge Intake Tool

Build the internal tool that makes supply acquisition repeatable — this is the actual product in city one.
 
/admin/intake is a mobile-first form an operator completes while standing inside the venue:
- Venue basics: name, type, contact person, phone, address (with map pin drop).
- The 12-shot list, as a guided camera flow with a reference thumbnail for each: wide from entrance, wide from opposite corner, seating detail, floor detail, ceiling and lighting, kitchen or prep area, restroom entrance, parking or approach, exterior, AV or sound equipment, storage, and one hero shot. Block submission until all 12 are captured — listing quality variance is the number one driver of guest distrust.
- Constraint capture: recurring in-use blocks (a scheduling grid for the typical week), blackout dates, restricted areas, alcohol policy, noise cutoff time.
- Capacity: seated, standing, square footage, whether tables and chairs are included and how many.
 
Then generate the listing:
Call Claude with the questionnaire answers plus the photo captions. Prompt: "Write a venue listing for an event marketplace. 120 words. Lead with the single most distinctive physical feature. State capacity and what is included in plain terms. Do not use the words 'stunning', 'nestled', 'perfect for any occasion', or 'state-of-the-art'. Name two specific event types this space genuinely fits based on its layout and constraints, and one it does not."
 
Suggest a price: query completed bookings in the same city, venue type, and capacity band; return the median hourly rate with the sample size shown. If fewer than 5 comparables exist, say so explicitly and fall back to an operator-set rate rather than showing false precision.

Sources

Market sizing, competitor set, and demand signals sourced from Ideabrowser MCP idea #1185 and the public research it cites (August 2026 snapshot). Marketplace take rates and host fees change frequently — verify each platform's current fee schedule on its live pricing page before quoting it.

• The Business Research Company — Events Industry Outlook ($1,346.92B 2025 → $1,930.26B 2029)
• Cvent — Event Statistics (industry benchmarks and planner behavior)
• Eventgroove — Event Industry Statistics (74% expecting budget increases; technology priorities)
• Business Research Insights — Party and Event Rental Market
• Peerspace — host fee and pricing reference
• Splacer — list your space reference
• Giggster — host fee reference
• Stripe Connect — marketplace payments and destination charges

Page sourced via Ideabrowser MCP (idea_id 1185): get_idea_research, competitive_analysis, go_to_market.