A Small Town's Game-Changing Approach to Mapping

Portsmoth, New Hampshire has created textured, 3D maps of its historic district to help illustrate development impacts during the approval process.

1 minute read

January 15, 2015, 12:00 PM PST

By James Brasuell @CasualBrasuell


Plan Portsmouth

Plan Portsmouth / Portsmouth 3D Model - Area 6

Rebecca Tuhus-Dubrow shares the story of how the small, historic community of Portsmouth, New Hampshire implemented innovative mapping software that shows how new buildings will fit into the town's historic fabric.

As Tuhus-Dubrow explains, Portsmouth shifted its use of technology to more aesthetic ends by using Tangram 3DS to create a 3D map of "nearly the entire historic district" of the town.

The goal of the maps, which were solicited by the city, is to enable architects, developers and the public to see how proposed buildings would look in context. Developers are, in fact, now required to show before-and-after images for major infill or redevelopment projects at planning meetings. The visuals are also available at a web portal so the public can see them at any time. You can zoom in and out, and see 360-degree views.

In the remainder of the article, Tuhus-Dubrow also explains the recent history of 3D mapping technology, first implemented by the Boston Redevelopment Authority, as well as some of the details about what makes Portsmouth's effort innovative.

Tuesday, January 13, 2015 in Next City

courses user

As someone new to the planning field, Planetizen has been the perfect host guiding me into planning and our complex modern challenges. Corey D, Transportation Planner

As someone new to the planning field, Planetizen has been the perfect host guiding me into planning and our complex modern challenges.

Corey D, Transportation Planner

Ready to give your planning career a boost?

Broken, uneven sidewalk being damaged by large tree roots in Los Angeles, California.

The City of Broken Sidewalks

Can Los Angeles fix 4,000 miles of broken sidewalks before the city hosts the 2028 Olympic Games?

December 5, 2024 - Donald Shoup

Large store in mall with yellow and black STORE CLOSING sign on front.

Shifts in Shopping: Transforming Malls Into Parks

Maybe zombie malls still have a second life — one with a little greenery.

December 8, 2024 - Ruscena Wiederholt

Multifamily housing under construction.

To Build More Housing, Cities Must Be Smarter in How They Use Land

How strategic land use policy decisions can alleviate the housing crisis and limit unsustainable sprawl.

December 11, 2024 - John D. Landis

Bird's eye view of empty asphalt parking lot with one blue car.

Parking Reform Can Boost Homebuilding 40 to 70 Percent

More evidence that parking flexibility is key to housing abundance.

December 13 - Sightline

Close-up of "Shared Use Path" sign for pedestrians and cyclists on post in urban setting.

California Adds Complete Streets to Transportation Funding Guidelines

The state transportation commission previously declined to include bike and pedestrian infrastructure in its updated funding guidelines, despite a new state law requiring Complete Streets efforts in all Caltrans projects.

December 13 - Streetsblog California

Aerial view of downtown Omaha, Nebraska with holiday lights at sunset.

Omaha Streetcar Yielding $1.5 Billion in TIF Funds

The line, scheduled for completion in 2027, is bringing billions in new investment to the city’s urban core.

December 13 - KMTV 3 News Now

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.