Using Addresses on MVA Registration Files to QC and

Update Addresses for Building Footprints

Apollo Teng & Carol Bernard

Montgomery County Maryland DTS – GIS

March 18, 2008

Acronyms & Terms

• MVA vehicle registrations• MDP property points• M-NCPPC GIS master addresses• MCG DTS GIS bldg_ps• Northrop Grumman CAD

61 GIS Data Layers for E-911

• Centerlines – 42,314• Building Footprints – 297,790• Hydrants – 30,643• PS Facilities• Schools• Hospitals• 55 other data layers

Building Footprints

• Graphic Shapes• House Numbers (or ranges)• Hyper Links for ‘Preplans’

MVA Motor Vehicle Registrations - 2007

Barnesville 269

Brookeville 170

Chevy Chase Section III 591

Chevy Chase Section IV 2317

Chevy Chase Section V 505

Chevy Chase View 684

Chevy Chase Village 1658

Drummond 91

Friendship Heights 2535

Gaithersburg 42392

Garrett Park 732

Glen Echo 196

Kensington 1847

Laytonsville 323

Martin's Additions 650

North Chevy Chase 402

Oakmont 122

Poolesville 4692

Rockville 59335

Somerset 869

Takoma Park 9959

Washington Grove 667

Total 131,006

Montgomery County 591,352

Grand Total 722,358

Accurate Counts of Registered Vehicles are objective criteria for certain highway related revenue sharing

Centerlines & Building Footprints

Centerlines, Address Ranges & BLDG

There is time lag between occupancies of new homes and MD property DB. No individual premise addresses are available for these new lots.

Clines geocoded MVA address points gather along the street segments; these addresses help populate the building footprints

MD Property Points provide addresses for single family homes. Only one MDP address exists for the 10-unit parcel.

14 MVA addresses (in the list) should provide addresses for the 10 units in this multi-unit development consisting of two buildings

Whereas there is only one address point in the MDP Property Points DB, the goecoded MVA address points provided addresses for all 11 units in this multi-unit development.

Whereas M-NCPPC’s Master Address DB currently provides only one address for this multi-unit development, geocoded MVA address points provided addresses for all 17 units.

The next 4 slides, demonstrate in light blue, each step in addressing buildings that have only one address. This building is currently

addressed by one represented MDP point.

Using MVA registrant addresses, in blue, (those not used are represented as green squares) to provide the blue outlined building

with addresses.

Dividing one building, represented in blue, into multiple buildings.

The finished product, represents a once singular building with only one address (provided by MDP points), now divided into multiple

buildings with individual addresses, acquired from the MVA registrants (points represented in blue).

QC helped by MVA points

• MVA points are extremely helpful in correcting multi-unit buildings by adding singular addresses, which are not provided in all cases, by MNCPPC master addresses or MDP points.

• They also provide current addresses for recently built buildings that do not show up on databases like MNCPPC master addresses or MDP point.

• In order to provide the most current premise number labels on buildings for MoCo public safety, MVA is another key reference layer to complete incomplete building addresses.

FRS needs buildings, addresses & preplans

Q & A

carol.bernard@montgomerycountymd.govapollo.teng@montgomerycountymd.govhttp://www.montgomerycountymd.gov