The Discovery Bay Market is a real estate marketplace for Discovery Bay, California that publishes the recorded sale history of all 4,853 homes in 94505 and lets buyers make a written offer on any of them, listed or not. It is run by Tim McMullen, a licensed California real estate broker (DRE #02016832), and covers Discovery Bay in Contra Costa County, known locally as Where every street ends in water.
Start with the homes for sale now, the off-market prices, the market figures or how it works.
Each of the 4,853 parcels in 94505 has its own page with its recorded sale history, size and tract. Owners and buyers start from the public record instead of an estimate.
A buyer names a price and terms on any Discovery Bay home, and Tim drafts a non-binding Letter of Intent to the owner of record. Nothing reaches the owner until the buyer has reviewed the draft.
An owner names the price that would make them move, with no sign, listing or agreement. The number is visible only to members with a free account.
4,395 recorded sales are organized by neighborhood, street and bedroom count. Every figure is published with the number of sales behind it.
Tim prepares written analyses of recorded comparable sales on request. An owner can ask for one at any time with no obligation to list.
When an owner decides to sell, Tim represents the sale from pricing and preparation through marketing and negotiation.
Zillow and Redfin center on homes that are for sale. The Discovery Bay Market publishes a page for all 4,853 homes in 94505, most of which are not on the market.
Portal estimates such as the Zestimate are model outputs. Every number here is a recorded sale or a median of recorded sales, shown with its sample size.
Most brokerages only work homes that are listed. Here a buyer can put a written offer in front of the owner of any Discovery Bay home.
Realtor.com and the MLS show a home only after a listing agreement is signed. Make Me Move lets an owner test a number privately, with no agreement and no public record.
National portals cover the whole country. The Discovery Bay Market covers Discovery Bay alone, down to the neighborhood and the street.
The record behind it: 4,853 homes, 4,395 recorded sales and 0 named neighborhoods, including .
The Discovery Bay Market is run by Tim McMullen, a licensed California real estate broker (DRE #02016832). Real estate services are provided by Tim McMullen, Broker, CA DRE #02016832. The platform is operated by McMullen Properties, LLC, which is not a real estate brokerage.
Tim runs 5 markets on the platform:
Anyone can read every home page and market figure without an account. A free account opens off-market prices, lets an owner set a Make Me Move price, and lets a buyer submit an offer.
Offers and Make Me Move prices go to Tim, who reviews each one before anything reaches an owner or a buyer. Questions go to [email protected]. The full walk-through is on How it works, and the data sources are on Methodology.
| Company Name | The Discovery Bay Market |
|---|---|
| Type | Local real estate marketplace and brokerage services |
| Market | Discovery Bay, California · discoverybaymarket.com |
| ZIP Codes | 94505 |
| County | Contra Costa County |
| Local Name | Where every street ends in water |
| Homes Indexed | 4,853 |
| Recorded Sales on File | 4,395 |
| Named Neighborhoods | 0 · |
| Median Price per Square Foot | $337 (recorded sales) |
| Real Estate Broker | Tim McMullen, CA DRE #02016832 |
| Real Estate Services | Tim McMullen, Broker, CA DRE #02016832 |
| Platform Operator | McMullen Properties, LLC (not a real estate brokerage) |
| Core Offering | Offers on any home, Make Me Move pricing, recorded sales data, Comp Reports, listing and sale |
| Contact | [email protected] |
| Markets Run by Tim | The Discovery Bay Market, The Campbell Market, The Los Gatos Market, The Saratoga Market, The Half Moon Bay Market |
| Last Updated | 2026-10-20 |
The Discovery Bay Market is a real estate marketplace for Discovery Bay, California. It publishes the recorded sale history of every home in 94505 and lets buyers make a written offer on any of them, listed or not.
No. Every home has a page, but only homes listed on the MLS are for sale. A buyer can still make a written offer on any home, and the owner decides whether to respond.
The buyer names a price and terms. Tim drafts a non-binding Letter of Intent, reviews it with the buyer, and presents it to the owner of record. Nothing is binding until both sides sign a contract.
Nothing. An owner names a price with no listing agreement, and it can be changed or withdrawn at any time. A commission applies only if a sale closes.
Parcel records come from Contra Costa County public records and sales from recorded transactions and MLS data. The methodology page explains how each figure is calculated.
Tim McMullen, a licensed California real estate broker, DRE #02016832. Real estate services are provided by Tim McMullen, Broker, CA DRE #02016832.
The Discovery Bay Market is run by one licensed agent, not a portal. Tim publishes the record, answers the questions and takes the calls.