I am not a real estate agent, but I own a few real estate related domain names that I occasionally advertise for sale.
From what I have learned there are basically two types of domain names, generic domains which are mostly comprised of common words such as Cars, Homes, or Games and then brandable domains which are usually made of unique names that can be used as a brand such as Google, Zillow, or ReMax. Some companies might brand themselves around a generic name such as Apple, or Tide, and some might go with the name of the founder of the company, but in either case it takes lots of money for advertising in order to establish a brand that is well known.
As a local agent it might be best to choose a domain name that is short, memorable, and somewhat related to the City or region that you are trying to cover such as:
YourCity+Homes.com
YourCity+RealEstate.com
YourCity+Properties.com
YourCity+RE.com
YourCity+Realty.com
YourCity+Realtor.com (if you are allowed)
YourCity+MLS.com (if you are allowed)
YourCity+Broker.com (if you are broker)
YourCity+ForSale.com
YourCity+HomeSales.com
Isell+YourCity.com
(You can use your County, Region, or State instead of City if that serves your needs better.)
Although most of these types of domains are probably long gone for the more popular Cities and regions, but some of them might still be available for sale by the original owner. Sometimes it might be worth it to pay a little more money to acquire a top of the line domain name if that domain can put you ahead of the pack in your local region. Most agents spend a lot of money on their office, cars, or clothes in order to project a more professional image, but when it comes to their website it seems like they want to do things the cheapest way possible which in my humble opinion is the wrong way to go about it since nowadays clients see your website and notice the domain name that you have chosen before they get to see your car or office.
In addition to your main domain name it might also be good idea to get a few long-tail domain names that target your city or region such as:
YourCity+RealEstateAgent.com
YourCity+HomesForSale.com
YourCity+LuxuryHomes.com
YourCity+LuxuryProperties.com
YourCity+NewHomes.com
YourCity+RealEstateListings.com
YourCity+HomeListings.com
YourCity+AreaHomes.com
YourCity+AreaRealEstate.com
YourCity+CommercialRealEstate.com
YourCity+Foreclosures.com
YourCity+YourState+Homes.com
YourCity+YourStateAbbreviation+Homes.com
(You can also use these with other keywords like Real Estate)
YourCity+REO.com
YourCity+ShortSales.com
YourCity+Condos.com
You don’t have to limit yourself to having just one website, you can have a main website (which could be a blog, or forum) that is built on your best domain name and then you can have many other simpler websites that use other domains which are interlinked together as a network. If your domain names get some traffic on their own then you don’t even have to build additional websites, you can just redirect those domains to your main website in order to take advantage of the traffic that those domains are generating. Domain names that have natural type-in traffic are harder to acquire because the traffic that they generate is from people who type those domains directly in their browser, which makes it to be independent of the search engines. Most domain names that get natural type-ins are usually comprised of the top keywords that people are interested in and might type them in their browser with the hopes that they can find a website that has what they are looking for. If you don’t have domains that get traffic on their own then the other alternative is to build a network of simple websites on some keyword rich and seo friendly domains that match the long-tail keywords that people look for on the search engines.
Obviously it is great to own a website (or a domain) that gets lots of visitors, but if you have 50 smaller websites (or domains) that are getting a few visitors each, then you might be able to get some good leads from the combined traffic that your network of websites (or domains) produces.
If you can only afford to have one website then it might be a good idea to choose a domain name that really counts by not only being seo friendly by having the right keywords for your region, but by being attractive and memorable enough for when you want to put it on your business cards, magnetic signs, or printed promotional items like pens or key chains. When it comes to dominating the market for your local city or region the way you advertise your website off-line is as important as all the efforts that you put into seo and online promotions.
(Just my opinion

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PS: you can see some of my domain names in the “Real Estate Related Products and Services” section.
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