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Parking


Parking takes up space

In March, The Straight Line showed the difference in scale between urban development and the infrastructure underlying suburban development by overlaying the I-270/I-370 interchange on top of Bethesda's Woodmont Triangle area.


The I-370/I-270 interchange overlaid on Bethesda's Woodmont Triangle.
The amount of space we devote to moving cars is almost surreal at times. At Montrose Road, Interstate 270 is a whopping 14 lanes wide. At that rate, it seems we're trying to rival places like Atlanta and Los Angeles.

But what is even more amazing is the amount of space we devote to storing cars. When people think of the automobile, it is invariably involved in going somewhere. But cars spend the vast majority of their time parked.

In Montgomery County, about 2.5% of the land area is devoted to parking. That's more than 12 square miles. It's slightly less than the amount of land covered by water in the county. Can you imagine the Potomac River, and the Triadelphia, Rocky Gorge, and Little Seneca reservoirs all covered in parking lots?

Perhaps more shocking is that the amount of space devoted to parking and driving exceeds the amount of land devoted to all buildings in Montgomery County.

Buildings cover about 4.1% of the county's land. But roadways cover 4.3%, meaning that we use 6.8% of the area of the county just to move or store automobiles.

Silver Spring is one of Montgomery County's urban areas. There we find that 21.9% of the land area of the Central Business District is devoted to parking cars. Most of that area is surface parking. Only 3.8% of the land area of the CBD is used for structured parking. Another 16% of the land area is used for roadways.

In fact, four times as much area is devoted to surface parking than is devoted to parks in the Silver Spring CBD. Author's note, added to clarify: This number only counts parks in public ownership. Privately held plazas are not shown because their surface area was not available at the time this calculation was done. These areas, like the Discovery Building's Sensory Garden and the splash fountain on Ellsworth Drive are vital, vibrant spaces which add immeasurable value to Silver Spring. Again, they were not included because the data was not available. I apologize if this caused any confusion or consternation.

In White Flint, along the suburban Rockville Pike corridor, the numbers are even more extreme. I used the boundaries of the recent sector plan area to calculate the percentages.

There, some 45.9% of the land area is devoted to parking. Another 13.2% is devoted to roadways, meaning that 59.1% of the land area of the neighborhood is given over to cars.

Here, the lack of a parking lot district makes shared parking much more difficult. And that means that each business is providing more spaces than would be needed in a "park once" district.

All told, approximately 34.6 square miles of land area in Montgomery County is devoted to automotive transportation. If all the roads and parking areas in Montgomery County were placed in Arlington County, Virginia, they would completely fill Arlington, and there would still be 10 square miles of parking and roads left over. Or, placed in Washington, they would cover over half of the land area in the District.

Accommodating this sea of parking places a huge cost on both the public and private sectors. And it also has a major impact on the environment. But perhaps most notable is the opportunity cost of using valuable land in activity centers for parking. In White Flint, despite the presence of a Metro station, 45.9% of the land area is devoted to parking. Only 17.7% of the land is used for buildings!

As the county grows more dense, the acres of parking in places like White Flint are becoming more valuable as potential sites for redevelopment. How the parking issue is addressed will have an enormous impact on the future of the county.

Crossposted at The Straight Line.

Development


Montgomery zoning solutions, part 2: Mixed-use zones

Yesterday, I discussed the potential zone restructuring in the Montgomery County zoning rewrite. The series continues today with an overview of our thoughts on the mixed-use and commercial areas of the county.


Photo by thecourtyard on Flickr.
These areas are an important part of the county. They are where residents shop and work. But in many cases their design reflects outmoded, unsustainable thinking, with strip shopping centers and office parks surrounded by acres of parking.

This model won't continue to work for Montgomery County as our population grows, demographics shift, and we run out of developable land. The county must find ways to leverage the infrastructure of these areas.

One approach to solving this problem is with the Commercial-Residential (CR) Zones. The CR Zones are a family of mixed-use zones comprising a variety of densities, heights, and mix of uses.

Each CR Zone is defined by 4 factors indicated in the zone name: CR, C, R, and H. These symbols correspond to overall allowed density (CR), maximum non-residential density (C), maximum residential density (R), and maximum height (H).

Density is measured using Floor Area Ratio (FAR), which is essentially a measure of bulk. For example, a building that is 1-story tall and takes up its entire lot has an FAR of 1. If the same building were 2-stories tall but took up only half of its lot, it would still have an FAR of 1. You can read more about FAR here.

The graphic below explains the range of CR Zones in density and height:

Now, it's important to note that the above graphic does not represent what is possible on the same lot. Each of these examples represents what development could look like in different zones based on the CR designation. The CR-6.0 building at bottom right could not be built in the CR-0.5 zone at top right. But the CR-0.5 building at top right, a standard method of development, could be built in any of the denser zones.

Let's consider another example. What could we build if a parcel was zoned CR-4.0 | C-3.0 | R-3.5 | H-50?

Because developers can only achieve the maximum density by mixing uses, they have an incentive to do so. This will improve the mix of uses in our activity centers. Other regulatory elements will ensure better urban design by putting parking behind structures and encouraging the inclusion of public amenities.

Implementing of the CR zones during rewrite project will not increase densities or heights beyond what exists now without comprehensive review and public input, as required by law. Increasing the density of a parcel is something that belongs in the planning process, not the coding process.

Currently, the highest density allowed in the county is 8.0 FAR, which is only allowed in the CBD-3 zone. Those zones are adjacent to the Metro stations at Bethesda, Silver Spring, and Wheaton.

The map below shows existing (and draft conversion) densities for the CR Zones throughout the county. Note the range of colors. The CR Zones are not uniformly dense and do not necessarily represent an "up-zoning."

Matt Johnson works for the Montgomery County Planning Department.

Development


Montgomery zoning solutions, part 1: Restructuring zones

This week, we continue the series looking at Montgomery County's zoning code rewrite. Montgomery has 120 zones, more than double the number of any other county in the region, and creating an untenable situation.


Growth in the zoning code over time.
The simplification and modernization of the code has many aspects, one of which is a restructuring of the zones. This restructuring will simplify the code in several ways:
  1. Eliminate unused zones
  2. Combine zones with similar standards
  3. Restructure zones into groups based on use
One of the main reasons we may be able to so dramatically reduce the number of zones is because we can shift the focus of zoning to real impacts.

Currently, while zones are somewhat differentiated by impact (read, density), they are primarily concerned with minute differences between allowed uses and development standards. Take, for instance, the R-150 and R-200 zones. Both are low-density residential zones. Except for a few differences in permitted uses, the zones are identical, even in development standards.

By combining zones based on these parameters, we can probably reduce the number of zones from 120 to less than two dozen.


Potential conversion from existing to proposed zones

This restructuring proposal, which is still being hammered out, will likely not have any substantive effect on single-family, existing planned development, or rural zones, including the Agricultural Reserve. Together, these zones make up over 95% of the county's land area.

While the names of these zones might change, little will be different for homeowners or developers in agricultural and low-density residential areas. In these cases, the main effort in the restructuring will be to ensure legibility, increase understanding, and modify the development standards and permitted uses to fit into a revised format.

The primary changes will be focused on the County's mixed-use and commercial areas. Some of those zones will see changes, including adding the CR zone family, which will be discussed tomorrow.

The changes to our commercial and mixed-use areas should improve the diversity and integration of uses, design of spaces and buildings, and the quality of public amenities in these areas. The restructuring, however, will not change existing densities or heights without a comprehensive public review and Council approval.

Changes to the zoning in our activity centers are important because of the changing nature of Montgomery County. The county is rapidly running out of developable land, and is striving to become more environmentally, economically, and socially sustainable. It is important for the new code to address redevelopment and infill development.

Tomorrow, we'll take a look at the CR zones, which are a family of zones likely to have a major impact on how we grow in our activity centers.

Matt Johnson works for the Montgomery County Planning Department.

Development


Montgomery's zoning issues, part 3: Complexity & confusion

Lately, I've been discussing the effort to rewrite Montgomery County's zoning code. Previous installments have covered zones and uses. Today, I discuss issues that make the current code complex and disorganized.


Definitons not used in the code.
Deficient Definitions

Like most legal documents, the Montgomery County Zoning Code includes a definitions section. But like other parts of our code, this section has also become cluttered and disorganized.

Montgomery's code includes 25 defined terms that are not used in the text of the code. "Foster home," "marquee," and "roof line" all fall into this category; the meaning of each is clear — because they're defined — but they are never referenced in the code.

Of the multitude of office types listed as permitted uses, only three are defined. The definition of "offices, general" includes "offices, insurance claims." But "offices, insurance claims" is its own line item in our use tables and is not itself defined. What happens if "offices, general" is permitted in a zone, but "offices, insurance claims" is not (in the C-4 zone, for instance)?

At the same time, the code deals with many terms that are not defined. Despite several specific and general categories of retail, the code doesn't clarify what is included in retail. Other words, for which a definition might be helpful, include "impervious surface," "Priority Funding Area," and "streetscape."

Procedures


Project Plan approval process
When Montgomery's first zoning code was enacted in 1928, development procedures were basically limited to an occupancy certificate, building permit, and plat. Today, there are 13 different procedures, some of which are similar (with different names) but are sometimes applicable on a zone by zone basis. Many procedures overlap with other procedures, as well.

The large number of procedures makes it difficult for everyone. It's difficult for property owners and developers to understand which plans and processes they're subject to and is difficult for citizens to know when they have the opportunity to participate in the process.

Procedures include:

  • Development Plan
  • Diagrammatic Plan
  • Schematic Development Plan
  • Supplementary Plan
  • Pre-Preliminary Plan
  • Urban Renewal Plan
  • Project Plan
  • Preliminary Plan
  • Site Plan
  • Record Plat
  • Variance
  • Special Exception

Development Standards

Development in the county is regulated by a set of standards in each zone. These standards regulate everything from height and density to setbacks. They are often very complicated and difficult to understand. Any given development could face up to 60 standards.

Standards also regulate open space. In some zones, this is called "green area," which is misleading in and of itself, because it can include paved areas and structures. In other zones, this area is variously referred to as "public use space," "common open space," and "outside amenity area." The terminology is inconsistent.

Oftentimes, standards no longer make sense or use outdated methods to achieve an end. For instance, in some residential zones, a requirement exists for a minimum 12-foot side yard setback, and that the sum of the setbacks must total 25 feet.

Some of the requirements, especially different definitions of density for residential and commercial components discourage mixed use. Defining residential uses by units per acre, but commercial development by Floor-Area Ratio (FAR) adds unneeded complexity to the process and does not result in predicable results.

Over the years, Montgomery County's zoning code has lost its cohesive vision. The tools in our planning toolbox no longer match the critical tasks at hand, which are all the more as the county runs out of greenfield areas to develop.

In the next installment, I'll discuss the approach we're taking to write the new code.

Matt Johnson works for the Montgomery County Planning Department.

Development


Montgomery's zoning issues, part 2: Uses

Montgomery County is working to rewrite its aging and complicated zoning code. In the last installment, I discussed problems with our zones. This post looks at issues facing allowable uses.

Zoning codes determine which land uses are or are not allowed to operate in each zone. Montgomery County's code deals with allowable uses by organizing them into tables or lists. Each zone or group of zones has a use table, list, or combination. The lack of standardized presentation of uses is part of the problem.

In each zone, uses, such as book stores, bowling alleys, recycling facilities, and townhouses, are either permitted by right or special exception, as indicated in the tables.


The use table shows uses on the left, zones on the top. Uses are permitted by right if they have a "P" and are special exceptions with an "SE"; they are not allowed if blank.

Our use tables, however, are not very user-friendly. If you know the zoning of a property, you can easily figure out what is permitted. However, if you want to know in what zone your new enterprise will fit, the tables won't shed much light.

Montgomery's code lists 433 specific uses. However, many of them are duplicative, overlapping, or outdated. The code lists 18 different types of office, including "offices, business," "offices, insurance claims," "offices, general," "offices, professional," and "offices, professional and business."

There are nine different types of child care, three different types of antique stores, and three different listings for Christmas tree sales. Do we really need an individual use for each variation of an antique shop?

Abattoirs, blacksmiths, foundries, millinery shops, and variety stores are all listed as permitted uses. Not only did most of those uses disappear from Montgomery County a century ago, but do people really know what those terms mean?

The modern term for abattoir, incidentally, is "slaughterhouse."

Oddities abound. Permitted uses in the I-2 (heavy industrial) zone include "stove polish" and "starch, glucose and dextrin." The code doesn't say the manufacturing of stove polish and starch, glucose and dextrin are permitted; it says those things are permitted. Does that mean one can use them in manufacturing? One can store them? Produce them? The code simply does not provide answers to these questions.

Like the rest of the code, our use tables are the victims of unplanned additions and amendments. As new zones were added, uses were removed, added, and modified without consideration for the overall form or goals of the code. If a use category wasn't broad enough, often times, a new specific use was inserted. And sometimes, use categories would be amended in one place but not another.

These issues need to be addressed. However, our approach must be more than just a revision of the existing use tables. The county's approach must be one which will deter subsequent haphazard and complicating additions or modifications. Our goal is to provide more certainty in the zoning process. Property owners, neighbors, and builders must know as much up front as possible, to help simplify the process and achieve more predictable results.

Matt Johnson works for the Montgomery County Planning Department.

Development


Montgomery's zoning issues, part 1: Complicated zoning

Recently, I discussed the effort underway in Montgomery County to rewrite an aging zoning code. Over three decades, the code has grown unwieldy and hard to use. Thirty-three years of additions and amendments has left the code with a mess of outdated provisions, orphaned words, and a baffling table of permitted uses.


Growth in pages of zoning code over time.
Many of the problems with the code stem from shortsightedness and the simple march of time. Text amendments and new zones were added without regard to the goals and intent of the code. As older zones fell into disuse, they were not refined or removed. At the same time, planners devised new zones for many of the master plans.

The result: a ballooning in the size and complexity of the code. In 1977, when the code was last rewritten, it spanned 274 pages. It's now over 1,000 and grew by 100 pages in 2008 alone.

Proliferation of zones

Among the most well-known aspects of any zoning code is the large array of zones themselves. In 1977, the county had 41 zones. Today, we have 120 zones, including 15 overlay zones.

At least 12 zones are totally unused, including six Planned Development zones which may never have been used. Some zones are similar to other zones, and thus are barely used.

Furthermore, the creation of mainly single-use, special-purpose zones has contributed to the proliferation. The H-M zone, for instance, was created for hotels and motels. But hotels and motels are permitted by right in 10 other zones. In fact, only two of Montgomery County's hotels are even in the H-M zone. That zone takes up just 21 acres, well under 0.1 percent of the county's land area.

Similarly, the mixed use, commercial, and central business district zones make up only 1.3% of the county's land, but account for over 20% of the county's zones. On the other hand, the Agricultural Reserve takes up almost 38% of the county's land, but is made up of just one zone: RDT.

Several zones are almost identical in composition. R-150 and R-200 are both low density residential zones, and have very little differences between them. While R-200 makes up 13% of the county's area, R-150 makes up only 0.4%.

Simplifying our zones is one step we are working on to make the code easier to use. In a future installment, I'll talk about our thoughts on zones. It is clear that development in the county will increasingly be located in infill situations where the current standards may prevent good infill development. The new zoning code will help create building and land typologies that will result in predictable infill development.

Matt Johnson works for the Montgomery County Planning Department.

Development


Montgomery rewriting 33-year-old zoning code

Matt Johnson works for the Montgomery County Planning Department. Normally, his posts are his own opinions and not those of the Planning Department, but is writing this series on Montgomery County's rezoning in his capacity as an employee of the department.

Zoning, the main tool to enact land use plans, is perhaps the most important part of planning. By specifying what, where and how new structures can be built, zoning gets things done.


Image from Zoning Montgomery.

In Montgomery County, a three-year project seeks to greatly simplify an unwieldy, outdated code and achieve strategic growth in a largely built-out county. The zoning rewrite won't dramatically rezone the county to change the land use patterns, but the zoning code could improve the quality of development in Montgomery County by encouraging more sustainable and compact development and better public amenities.

Tonight and Wednesday, the Planning Department will shed light on the rewrite project to date, from its diagnosis phase to the current draft of the revised zoning code's outline/approach. Open houses at 7:30 pm tonight (Tuesday) at Park and Planning Headquarters, and noon tomorrow (Wednesday) at the Rockville Library will feature half a dozen interactive displays.

Montgomery's first zoning code was enacted in 1928. That year, the code had 5 zones and was 15 pages long. Over the years, it has been revised several times. When the code was last rewritten in 1977, Montgomery County was a vastly different place socially, politically, and economically. Perhaps the most significant difference is that today the county is running out of developable land.

With only about 4% of land in Montgomery County available for development, the new zoning code can play a crucial role in guiding redevelopment of areas like surface parking lots and strip shopping centers. The rules controlling that redevelopment are built into the zoning code and play an important role in achieving the kind of growth county residents want.

The open houses feature a visual presentation of what's allowed in different zones, such as the mix of land uses, building design and public amenities. Other displays shed light on how zoning can help achieve sustainability goals, how to simplify the listing of land uses allowed in zones, and better define development standards like landscaping, lighting or parking to improve overall project quality.

The open houses are our latest attempt to show the public what we're up to. We will be both showing our progress and listening to public input.

It's important to note that the Rewrite is not a rezoning of the county. Changing the zoning of individual parcels typically occurs through a master planning process, like the one recently approved for White Flint. Using the rewrite to rezone would be comparable to using a sledgehammer to do the work of a screwdriver: it's not only the wrong scale, it's the wrong tool.

I'll talk more about some of the difficulties of the current code and potential solutions in future installments. Meanwhile, we hope to see you at one of the open houses. If you can't stop by, check out our virtual open houses.

Retail


DC moving with record speed to change 14th and U restaurant limits, accepts resident recommendations

The DC Zoning Commission is usually a very slow-moving body. Hearings can take months just to schedule, and rezonings can take years. But the machinery has sprung into rapid action to address the outrage over DCRA's recent determination that no more restaurants can open along 14th and U Streets in the ARTS overlay.


Image from Google Street View.
DCRA's ruling just enforces the current, yet arguably unfair zoning rule that limits restaurants and bars to 25% of the linear frontage of 14th and U in the entire, large ARTS overlay.

That extends along 14th from just north of N Street all the way to Florida Avenue, and U Street from 9th to 15th. That means that a concentration of restaurants on U around 10th affects the ability of a restaurant to open down around 14th and Rhode Island. That seems wrong.

Furthermore, a committee created by ANC 2F (which represents most of 14th south of U) recommended modifying the 25% limitation, saying, "it is now overkill to reserve 75% of the frontage on 14th and U streets for non-restaurant and bar uses."

The report recommended increasing the limit to 40-50%, but changing the standard for exceptions to no longer permit a "special exception" (which is easier to obtain) to exceed the limit. They also recommended computing the limit for each block rather than across the entire district, an approach I suggested on the blog and spoke to the committee about during their investigations.

After the MidCity Business Association raised the alarm, nearly every blog in DC covered the issue, area Councilmembers voiced their support for a change, DCRA put out press releases saying they wanted to change the rules, and the Office of Planning proposed an emergency text amendment, which the WBJ reported will have a hearing on April 26th.

That's probably the meeting to discuss the "setdown," where the Zoning Commission officially announces an issue and opens up the public comment. The Office of Planning just posted their setdown report for the amendment and recommended an abbreviated 30-day notice period for the subsequent hearing.

OP essentially recommends exactly what the ARTS overlay committee proposed. The new rule would allow up to 50% restaurant and bar uses, but measured for each "block face" rather than for the entire overlay. Any exceptions to this new standard would need to meet the much stricter variance test rather than the special exception requirements. The change would also clarify that restaurants above or below the ground floor do not count toward the limit.

According to the OP report, four block faces currently exceed the 50% limit: the east side of 14th between U and V (which includes Busboys and Poets), the north side of U between 13th and 14th, the south side of U between 11th and 12th (which is "currently entirely developed with popular eating establishments," such as Dukem Ethiopian), and the north side of U between 10th and 11th.

It's very meaningful that OP took the committee's recommendations nearly without change. Unlike many resident efforts in zoning, the committee took a very pragmatic approach to the ARTS overlay. They came up with sensible ideas for better achieving the goals of the zoning regulations and improving the area, not agreeing to unlimited development nor fighting any change at all.

This committee did a remarkable amount of work learning about the issues, studying the regulations, interviewing residents, business owners, and developers, and debating the issues. It's gratifying to see their hard work accepted by the Office of Planning. OP should similarly strive to incorporate as much of the committee's other recommendations into the larger zoning rewrite, to demonstrate that when residents put in the work to formulate detailed, thoughtful, and non-knee-jerk recommendations, the government will listen.

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