Sorry you didn't get any responses. You might want to try a different forum like "Ask a Mustachian" since you have financial and real estate questions.
As far as DC goes, realize the market there is completely driven by federal contractors. That means no one likes uncertainty, and when elections happen or economic upheaval/contract funding environments change you can get some big swings. Unless you work for one of them, I would watch for big election cycle changes that can have an effect on that market, or policy changes in what gets funded (basically are we going to be at war or peace, and who is getting the funding). For example, 2016 Presidential election, or if the economy downturns and we don't get a two termer 2020. You can also watch midterm elections. Big swings between parties can throw a lot of people out of work. Try to avoid the spring/summer sale market for this reason (and the rental market). I would pay attention to fall and winter sales and rentals. October tends to be a slow time for the stock market, and there is often a downturn. You can't always time the market, but you shouldn't rush in when it is flush either.
Some other questions to ask yourself:
Saving 33k while living at home for free is easy. How will you afford repairs and upkeep? How much could you save if you paid rent? I assume you would split with a partner so assume 1100 for rent and utilities. That gives you a savings margin (in addition to the retirement) of just under 20k. That's def a good start, but your down payment is pretty small still for that high priced real estate market. Do you intend to put 5% down for FHA, or will you try to get out of PMI?
Putting 1800 into a rental each month with NO additional maintenance is not equivalent to a mortgage at 1800. A year or two of renting at this price point will lose you the property tax deduction, but with your retirement savings you might not really benefit from it as much as you would think. Also, you will likely save thousands of additional dollars on maintenance and other costs etc each year you rent. Meet with an accountant to look at the tax situation. But if you are the partner are married and both high earners filing jointly than you likely would.
If you and your partner haven't lived together, I would rent for a year first and see what you actually need in a space. You would then have the flexibility to change out properties if you decide you do or don't need two sinks/two bathrooms/a different neighborhood/don't like the commute (some couples realize it is better to have only one partner commute rather than split the difference), etc. Also, where you want to live will change when you have kids (when they are small you will want convenience; when they are school age you will want good schools).
My advice would be to rent for 1-2 years. Then reevaluate. Don't rush buying a house unless you find a killer deal you can't pass up. If you rent 3-4 years that places you in DC for maybe only 5 more years, which if prices come down could be a great deal, but if they don't might save you tons on maintenance, transaction fees, etc, especially since childcare in DC is so expensive you may decide to have one partner stay home, or move to a cheaper area sooner. It's good you are thinking about these things, but don't worry about them. Give yourself some time, and live in and explore the present.