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Inspiring net zero energy building for sustainable future

D.C. working to curb greenhouse gas emissions

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greenhouse gas emissions, gay news, Washington Blade
D.C. buildings are responsible for 74 percent of the city’s greenhouse gas emissions.

In Washington, D.C., buildings are responsible for 74 percent of the city’s greenhouse gas emissions. As threats from climate change become more severe, particularly impacts from more intense heat and rain events, it has become a city priority to rein in those emissions and plan for a more sustainable future.

Just a few months before Mayor Muriel Bowser signed the Clean Energy DC Omnibus Amendment Act into law, the D.C. Department of Energy and Environment finalized its Clean Energy DC plan. This plan highlights more efficient buildings, particularly those that are net zero energy, to curb greenhouse gas emissions.

A building has achieved net zero energy when its annual energy usage is equal to or less than the amount of energy created onsite by using innovative technologies and renewable power generation. Some building owners may not know the best strategies to use to reduce energy usage in their buildings, let alone target net zero energy. While the following tactics may not be applicable to every building, the broader engineering principles of reduction, reclamation, absorption, and generation—especially when implemented together—can help target net zero energy goals.

There are many ways to reduce energy consumption, such as installing LED lights and energy efficient appliances. In addition, reusing as much material as possible during a renovation project can reduce a building’s carbon footprint by keeping waste out of the landfill.

The District now requires new construction to capture the first 1.2 inches of rain on-site to stem the flow of water and protect local rivers. A cistern can reclaim rainwater by filtering and treating it for non-potable uses like flushing toilets and irrigating plants.

Installing and irrigating a hydroponic phytoremediation, or green, wall can improve indoor air quality. The green wall allows air to be circulated through the roots of live plants where it is cleaned and filtered before passing back into the building. When working with a building’s HVAC system, this process provides a large energy cost savings.

A municipal sewer heat exchange system is an innovative way to absorb thermal energy from wastewater. This system taps into the sewer line and diverts wastewater to a settling tank that is then circulated inside the building. An exchange system extracts energy from the water for heating and cooling before the water is returned to the sewer.

Even when located on a tight urban footprint, a building can still generate enough power with a photovoltaic (PV) array to operate on a yearly basis. By utilizing the direct current power from the PV array, a building can power its lights, computer monitors, workstations, and more.

As a global community of Earth and space scientists, sustainability is also a priority for AGU. AGU’s headquarters building is currently undergoing renovation and, upon completion, will be the first net zero energy commercial renovation in D.C.

To help address climate change and lead within D.C.’s sustainability goals, AGU focused on each of the strategies outlined above. For example, AGU cleaned and reused more than 5,000 bricks during demolition and repurposed materials. AGU’s terrazzo flooring, as well as the Board room table, is comprised of reclaimed porcelain and glass from the original building.

In addition, AGU was the first in the U.S. to install a Huber system, a type of municipal sewer heat exchanger that uses wastewater energy from a D.C. sewer line dating back to the late nineteenth century. Finally, AGU will generate power through more than 700 on-site solar panels.

(Photo by Beth Bagley)

A proud member of the Dupont Circle neighborhood, AGU now welcomes the public for net zero energy “inspire” tours and to rent meeting space. AGU hopes to share best practices and inspire more progress toward sustainability through the organization’s award-winning efforts. By implementing just one tactic described here, building owners, communities, local leaders, and members of the broader building industry can make a significant difference for the city and society’s future.

Where Science and Sustainability Meet: This green wall is located in AGU’s newly renovated net zero energy building at 2000 Florida Avenue, NW, Washington, D.C. AGU’s headquarters aims to become the first commercial building in Washington, D.C., specifically renovated to achieve the goal of net zero energy. The green walls, also known as hydroponic phytoremediation (hy-phy) walls, help meet this goal by serving as natural air biofilters. Tours of the AGU net zero energy building are available to the public. Learn more at building.agu.org.

In January 2019, at AGU headquarters at 2000 Florida Avenue, NW, Washington, D.C., Mayor Muriel Bowser was joined by AGU CEO and executive director Chris McEntee and AGU Executive VP, Strategic & Organizational Excellence Janice Lachance, as the Mayor signed clean energy legislation into law. The landmark clean energy bill established Washington, D.C. as a global leader in clean energy to combat climate change. The ceremony was hosted at AGU’s headquarters, the first net-zero building renovation in the District, as an example of meeting energy goals in combating climate change.

(Photo by Beth Bagley)

Chris McEntee, [email protected], is executive director/CEO of AGU, a worldwide community that advances Earth and space science for the benefit of humanity. For more information, visit sites.agu.org or 2000 Florida Ave., N.W.

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Real Estate

How to keep cool during a heat wave

Close blinds, use ceiling fans, and more tips

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It’s hot! Here are some ways to keep cool in a heatwave. (Photo by sonyworld/Bigstock)

Did you melt like the Wicked Witch of the West this week?

As summer temperatures rise, keeping your home or apartment cool during a heat wave can become both a comfort issue and a financial challenge. One of the most effective ways to keep a home cool is to prevent heat from entering in the first place. Sunlight streaming through windows can significantly raise indoor temperatures. Consider the following solutions:

• Close blinds or curtains during the hottest parts of the day. Blackout curtains or thermal drapes can reduce heat gain by up to 30%.

• Install reflective window films to block UV rays and reduce solar heat without sacrificing natural light.

• Use outdoor shading solutions such as awnings (yes, the ones you removed because they were “dated”) and shutters to limit direct sunlight.

Fans are a cost-effective way to circulate air and create a wind-chill effect that makes rooms feel cooler.

• Ceiling fans should rotate counterclockwise in the summer to push cool air down.

• Box fans or oscillating fans can be placed near windows to pull in cooler evening air or push hot air out.

• Create a cross-breeze by opening windows on opposite sides of your home and positioning fans to direct airflow through the space.

• For an extra cooling effect, place a bowl of ice or a frozen water bottle in front of a fan to circulate chilled air.

To optimize natural ventilation, open windows early in the morning or late in the evening when outdoor temperatures drop. This allows cooler air to flow in and helps ventilate heat that built up during the day. 

Appliances and electronics generate a surprising amount of heat. To reduce indoor temperatures:

• Avoid using the oven or stove during the day; opt for no-cook meals, microwave cooking, or grilling outside.

• Run heat-producing appliances like dishwashers and clothes dryers in the early morning or late evening.

• Unplug electronics when not in use, as even standby power can add heat to your space.

• Switching to energy-efficient LED lightbulbs can also reduce ambient heat compared to incandescent lighting.

If you do use an air conditioner, maximize its effectiveness by:

• Setting it to a reasonable temperature—around 76–78°F when you’re home and higher when you’re away.

• Cleaning or replacing filters regularly to maintain airflow and efficiency.

• Sealing gaps around doors and windows to prevent cool air from escaping. (Didn’t we all have a parent who said, “Close the door. You’re letting all the cool out?”)

• Using a programmable thermostat to optimize cooling schedules and reduce energy use.

If it is not cost-prohibitive, adding insulation in attics and walls can greatly reduce heat transfer. Solar panels that reflect heat can also help, as well as offset the cost of their installation. Adding weatherstripping around doors and windows, sealing cracks, and using door sweeps can make a significant difference in keeping heat out and cool air in.

Natural and eco-conscious methods can also help cool your home.

• Snake plants, ferns, or rubber trees can improve air quality and slightly cool the air through transpiration.

• White or reflective roof paint can reduce roof temperatures significantly.

• Cooling mats or bedding can make sleeping more comfortable without cranking up the A/C.

For renters or those who can’t make permanent modifications, there are still plenty of ways to keep cool.

• Use portable fans and A/C units instead of built-in systems, making sure they are the correct size for your space.

• Removable window film or static cling tinting can reflect heat without violating your lease.

• Install tension rod curtains or temporary blackout panels instead of hardware-mounted window coverings.

• Add draft blockers and weatherstripping tape that can be applied and removed without damage.

• Cover floors with light-colored rugs to reflect heat rather than absorb it.

• If allowed, use temporary adhesive hooks to hang reflective materials or light-filtering fabrics over windows.

Even if your space is warm, you can still take steps to help your body stay cool.

• Wear light, breathable fabrics like cotton or linen.

• Stay hydrated and avoid caffeine or alcohol during peak heat hours.

• Take cool showers or use damp cloths on your neck and wrists to bring your body temperature down.

Keeping your home or apartment cool in the summer doesn’t have to be expensive or energy-intensive. With a few adjustments such as blocking sunlight, optimizing airflow, using fans effectively, and making renter-friendly upgrades, you can create a more comfortable indoor environment while keeping energy bills in check.


Valerie M. Blake is a licensed Associate Broker in D.C., Maryland, and Virginia with RLAH @properties. Call or text her at 202-246-8602, email her at DCHomeQuest.com, or follow her on Facebook at TheRealst8ofAffairs

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The world’s on fire and D.C. is on sale (sort of)

Prices are up, but then again, nothing makes sense anymore

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The housing market remains strong in D.C., especially in upper Northwest. (Photo by Stbaus7/Bigstock)

ICE is disappearing people, revered government agencies are shuttering, and who knows if we’ll be in World War III next week? But can you believe prices in D.C. are actually still up 6.3% since last year? It doesn’t make sense, and perhaps that does make sense, because nothing seems to make any sense any more.

That said, there are some parts of our market that are truly suffering. The interest rates, which have been up, up, up for about four years now, are the ongoing rain on our market’s military parade. Combine that with 75,000 federal employees taking a buyout nationwide, and DOGE cuts eliminating around 40,000 federal jobs in the District (per estimates by the D.C. CFO), not to mention thousands of other job losses in non-governmental organizations due to funding and program cuts, and you’ve got a case of uncertainty, and downright unaffordability in the pool of otherwise would-be buyers.

This has had a marked impact on properties that starter-home buyers and low- to mid-level employees would otherwise buy, most notably condominium and cooperative apartment units. These properties have already slowed in our market thanks to the profound impact that higher interest rates have had on their monthly carrying costs—pair that with job insecurity, and a lot of condos are proving to be very difficult to sell indeed.

So how is the average sale price up in our market?

The increase is almost entirely due to the resounding strength of the single-family home market, especially in upper Northwest D.C., where it is still quite common to see bidding wars, even on properties pushing past the $3M mark. It seems that buyers in that echelon are less impacted by a few percentage points in the interest rate, and less concerned about their job security. Notably, those buyers are often married with children and have an absolute need for more space, must stay in the area due to one spouse’s job, or the kid’s friend group, regardless of whether the cost of owning is thousands of dollars more per month than it would have been in 2020 or 2021. The continued appreciation in these neighborhoods defies imagination.

So, what to do if you are not one of those lucky enough to be shopping for a $3M home? The short answer: wait. If you want more space, rent your current place out and learn the joys of being a landlord while someone else pays your mortgage. Need the equity from your current home to buy your next place? Get a home equity line of credit, or loan, and pull the equity out of your current place to buy the next one. Or—and I have never recommended this before in 21 years of being a Realtor—rent for a few years. Sure, I’d love to list and sell your condo so you can climb the real estate ladder, but it might just be a waste of time, money or both if you could just ride out this storm and sell in a DOGE-less future.

All this said, there are some condos that seem to be immune from this recent negative news. Anecdotally, it feels like it’s the truly special ones that do just fine no matter the market. Our recent listing in Capitol Hill had a view from every one of its 15 windows of the Supreme Court. Sold in five days with six offers. Another condo was on the top two floors of a townhouse and had the coolest black wood floors that gleamed like a grand piano. Sold in four days at full price.

So, all is not for naught if you have a condo or home in an area that people want to be in, with nice space, light, amenities and a certain je ne sais quois. And, as long as we have a democracy in a few years, my experience says our market will be back, stronger than ever, really soon.


David Bediz is a Realtor and mortgage loan broker for the Bediz Group LLC and Home Starts Here, LLC. Reach him at [email protected].

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No Rose, your interest rate has nothing to do with how many likes you got on Hinge

Many factors help determine rates these days

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With the rise of interest rates in recent years, buyers must understand the many factors that go into the final number. (Image by HomeStead Digital/Bigstock)

Picture it, you’re sitting in the lunchroom at work, and your coworker just bought a house. Another coworker bought one a few months ago and you hear that she got a totally different interest rate than the other one did, even though they both bought houses not that far from each other. Homebuyers everywhere have been wondering what interest rates they are going to get, lately. It’s easy to read an article online or see an ad on social media stating specific numbers, but there may be more than meets the eye going into a particular buyer’s interest rate. 

What are the factors that can affect the interest rate a buyer eventually “locks in”?

  • Property details – certain properties may be in neighborhoods with higher rates of foreclosure, or there may be specific census tracts that allow a buyer to participate in the “Fannie Mae Home Ready” and “Freddie Mac Home Possible” programs, which carry more flexible requirements such as various income limits and lower interest rates, to help people begin homeownership.   
  • Type of loan / loan amount– a conventional, conforming loan or a jumbo loan can have differing interest rates, as well as FHA loans. 
  • Credit score – most people are aware that this affects what interest rate is quoted, just like on a credit card. Some lenders will work with you on ways to improve a credit score if the goal is to buy six, nine, or 12 months from now.  
  • Lock period – do you want to lock in the rate for 30 days? 45?  Market volatility can cause the rates to change so it will cost more money to hold onto a particular interest rate. 
  • Loan to value ratio – one can still buy a home with less than 20% down, but the rate that is quoted may be higher. 
  • Occupancy type – is this the primary residence or an investment property?
  • Points bought or credits taken – A buyer can pay the lender a fee to buy down the interest rate, or the seller can sometimes offer a credit. This has become more popular in recent years.
  • Market conditions – keep an eye on the news – as we are all aware, change is the only constant!

Lender Tina del Casale with Atlantic Union Bank says, “With jumbo fixed rates in the low 6’s, and first-time buyer down payment assistance loans such as DC Open Doors, rates are in the mid 7’s. With the added factors of your income, the address you are purchasing and your credit score factoring into the equation, interest rates are different from buyer to buyer these days. So, skip the online tools and make a few calls because that’s the only way to get an accurate quote these days!”

It might feel like an overwhelming amount of information to take on, but remember, there are people that help others take these big steps every day. A trusted lender and Realtor can guide their clients from start to finish when it comes to purchasing a home. And for that, you’ll be saying, “thank you for being a friend!”  


Joseph Hudson is a referral agent with Metro Referrals. Reach him at 703-587-0597 or [email protected].

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