Services · Mobile app development · Online marketplace apps
Codeeo offers marketplace app development in Los Angeles for retailers, apparel wholesalers and founders who want many sellers trading under one roof. We design and build the buyer app, the seller app and the back office, with California built in from the start: the CDTFA expects marketplace facilitators to collect tax on seller sales, the CCPA gives shoppers rights over their data, and the state's honest pricing law requires mandatory fees to appear in the price buyers first see.
Los Angeles sellers range from a single designer with a following on social media to a downtown wholesaler shipping container loads. One platform can serve both, provided onboarding, pricing rules and payouts are designed for each from day one rather than bolted on after launch.
200+ companies across the US and the UAEFrom a first store to a listed developer
Inside the platform
Commerce in Los Angeles leans heavily on brand and image. Sellers expect their storefront to look as good as their own site, buyers discover products through video and creators, and a large share of the apparel trade still flows through the wholesale showrooms and stores of the downtown Fashion District. Multi-vendor marketplace app development in Los Angeles has to respect all three.
It also has to respect California law, which is stricter than most states on privacy and price display. We treat those rules as product requirements: the checkout shows the full price, data requests have a working process, and tax is collected per delivery address. The features below are where those requirements meet the shopping experience, and we help you decide which belong in the first release and which can follow once sellers are trading and buyers are coming back.
Each seller gets a storefront with their own banner, lookbook images, short videos and collection pages, inside your marketplace design system. Sellers can feature drops and limited runs, and buyers can follow a store to hear when new pieces land.
Sellers with strong brands keep their identity on your platform.
Retail buyers order by size run and prepack, see line sheets with wholesale prices, request samples, and choose ship dates for each order. Approved stores get net terms; new stores pay by card. Seller reps can write orders during a showroom appointment straight into the app.
Wholesale orders arrive complete, sized and ready to pick.
California's honest pricing law, SB 478, requires mandatory fees to be included in the advertised price. We build pricing so any compulsory service or platform fee is shown inside the listed price, while shipping, taxes and optional extras remain separate lines, as the Attorney General's guidance allows.
The first price a buyer sees is the price they pay, apart from tax and shipping.
Under the Marketplace Facilitator Act, facilitators generally collect and pay tax to the CDTFA on retail sales they facilitate for delivery in California. A tax service applies the district rate for each address across Los Angeles County, and reports come out ready for filing.
Sellers selling only through you are spared a separate state permit in most cases.
Buyers and sellers can request access to, correction of or deletion of their data, and opt out of its sale or sharing, including by browser opt out signals. Requests are logged with deadlines, and data minimization is applied to seller verification files.
Privacy requests are answered inside the legal timeline with a record kept.
Sellers who reach the federal high-volume level supply tax, bank and contact details, which the platform verifies and asks them to recertify each year. Suspension follows for non-response, and buyers get a reporting route for suspected counterfeit goods, a recurring problem in fashion.
Counterfeit risk is handled with a process, not only takedowns.
Creators get tracked links and curated shop pages, sellers set commission rates per creator, and the platform pays creator commissions alongside seller payouts. Buyers can shop straight from a creator's picks inside the app.
Social reach turns into attributed sales you can pay out cleanly.
A platform payments provider takes one payment, splits it between sellers and creators, retains your commission and pays out on your schedule. Refunds and chargebacks unwind the split automatically, and 1099-K data per seller is kept for the provider's year-end filing.
Every dollar in the basket ends up with the right party.
Fit-related returns are common in fashion, so return windows, reasons and restocking rules are set per seller and shown before purchase. Disputes collect photos, tracking and messages in one case, which also answers any card chargeback.
Return disputes close quickly with evidence attached.
English and Spanish come as standard, and Korean, Chinese or Armenian can be added where your audience calls for it. Sellers write listings in their own language, and machine translation is offered with a clear label.
More Angelenos can buy without switching apps or languages.
Who this is for
Looking for online marketplace app developers in Los Angeles usually starts with a specific business problem rather than a wish for an app. These are the four we hear about most often, and each one shapes the first release differently. Distance matters too: sellers spread from the Valley to Long Beach and the Inland Empire, so pickup, courier and freight options are decided per seller rather than assumed for the whole platform.
Store buyers from across the country already know your line, but reorders still come by text and email between market dates. A B2B marketplace app for Los Angeles wholesalers can carry your collection and neighboring brands, with prepacks, size runs, ship windows and terms for approved stores. Your reps keep their accounts and see every order those accounts place.
Trade pricing stays hidden until a store is approved.
You have shoppers and a brand, and you want a wider assortment without carrying stock. We add vendor onboarding, all-in pricing, payouts and California tax collection to your existing commerce setup, so shoppers see a larger range under your name while your merchandising team decides which sellers fit the brand. Loyalty points and member pricing can apply across your own stock and vendor items, or be limited to your own lines if margins require it.
Vendor curation rules sit with your merchandising team.
Vintage resale, streetwear, art prints, beauty from independent labels: Los Angeles produces communities that buy from each other. These platforms need fast listing from a phone, trust signals for strangers, protected payments and creator attribution. We build a lean first release and add social features once you know what drives repeat buying.
Authentication of high-value items can be added through a partner service.
Booking photographers, stylists, equipment rentals or studio space adds calendars, deposits and cancellation rules to the marketplace model. California's AB5 and its ABC test make worker classification a real legal question for service platforms, so your counsel should decide the model first. We then build pricing, scheduling and rating controls to match that decision. Insurance details and permits for location work can be collected from providers during onboarding.
We follow your legal advice on how much control the platform exercises.
Engagement
We are a team of 80+ across Dubai, Riyadh and Karachi, with 200+ projects delivered across the UAE and the US and a 4.7 rating from 23 Google reviews. There is no Codeeo office in California; we work remotely with Los Angeles clients and hold discovery, reviews and demos on video calls. Most begin with a fixed scope launch and move to a retainer for ongoing releases, while larger platforms take a dedicated team.
A defined build with a deadline
We agree what the product has to do, write it down with a price and a date, and build exactly that. Changes are priced before they are made, not discovered on the invoice.
A product that keeps evolving
Named engineers who work your hours, join your standups and stay on the codebase. You direct the backlog; we own the quality of what ships.
Something live that needs looking after
A monthly block of hours for improvements, fixes and the small requests that otherwise wait months. Unused hours carry for a quarter.
Technology
Native or cross platform apps with fast image and video delivery, a web storefront that search engines can index, and a ledger-based backend for commissions, payouts and refunds. Tax, payments and verification run on established providers, and privacy request handling is part of the core build. Image processing resizes and compresses seller photos automatically, so storefronts stay fast on a phone signal in traffic.
01Mobile
02Data and cloud
03Marketing and tracking
Timing follows scope, and scope is fixed in discovery before we commit to dates.
A consumer marketplace with one seller type, card payments and parcel shipping moves faster than one that adds wholesale prepacks, creator commissions and several languages. Approvals outside our control, such as payments provider onboarding for your platform and app store review, also affect the calendar, so we start them early. You receive written dates once the seller, pricing and tax flows are designed and agreed. Changes after that point go through a short change request, so the timeline never drifts without you agreeing to it.
Schedule a free consultation and get a written recommendation, with costs, before you commit to anything.
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