About once a week, someone asks Redfin who built our real estate search site (sometimes they don’t ask, they just take). Since we built our site on our own, we can’t recommend a development partner, but we can offer advice to other brokers building MLS-powered sites.

And our first suggestion would be to bring your wallet. If you include all the employee salaries, benefits, hardware, online services, data costs and hosting costs, Redfin will probably spend $4+ million on research and development in 2009.

Is Technology Tilting the Playing Field Toward Large Brokers?

Is Technology Tilting the Playing Field Toward Large Brokers?

That may sound like an imposing number but we have costs you can avoid. We spend at least $1 million on commerce tools for tracking offers and listings, so we can give customers the same 24-hour web support you expect from a bank, limiting the administrative burdens on our agents. A traditional brokerage doesn’t have to invest in this area.

We probably spend another $1 million making mistakes you could easily duck by following us at a safe distance of, say, six months. We try to avoid mistakes, but a mistake is often just a good decision outpaced by circumstances.

For example, when we had no money — scratch that, (thanks David Selinger) when no mapping technology existed that supported user-controlled panning and satellite imagery — it made sense to build our own map. Later, Virtual Earth was the best choice because Google was slow to draw hundreds of property outlines on its map. Now the best choice for us is Google Maps because we figured out how to outline all the properties at once. We just switched to GMaps today, and now it’s on the front page of TechMeme.

I think we’re the only folks in real estate who have used Virtual Earth, Google Maps and a proprietary map, so if you have questions on the relative merits of each service, please just drop us a line.

That leaves the cost at around a few million dollars per year to build a real estate search site with national scale, which is still too expensive. While hardware costs decrease every year, Read more