Lynn residential development explorer

What could happen if
new housing were built here?

Place a proposal, compare alternatives, and see which assumptions shape the story.

Not a prediction Plausible ranges for decision support
01
Choose a placeExplore Lynn, then select a development site
DEMO PACK · 0.1.0
Map layers
Scenario site Lynn boundary Live basemap
Boundary: U.S. Census TIGERweb · Context layers: demonstration
Loading Lynn map
01
Selected siteDowntown Gateway1.8 acres · CBD zoning
Transit0.20 miExisting cover68%Flood overlap0%
02
Describe the changeInputs update the estimate ranges
Local draft
Bedroom mix
Assumption focusAll result ranges stay visible
03
Run RZWABZ · central focus

A plausible range,
not a promise.

Compact homes adds 200 homes at Downtown Gateway. Under these assumptions, the largest differences are driven by the bedroom mix, parking supply, and proposed site coverage.

Selected assumptions

Click any result to see the formula, values, source path, and limitation behind it.

04 Same site · same baseline · same model

Compare the choices,
not just the totals.

Alternatives A and B use Lynn demo pack 0.1.0. Differences come only from the inputs you can see.

AlternativeHousing program
Homes
200homes
150homes−50 vs A
New residents
304people
262people−42 vs A
Public-school students
15students
17students+2 vs A
Daily vehicle trips
474trips
326trips−148 vs A
Proposed impervious
52,000ft²
39,000ft²−13,000 vs A
Comparison uses central estimates; ranges remain available above.
Methods & data

Trust begins with
showing the work.

This first build demonstrates Citynario’s calculation and provenance contract. Its rates are illustrative proxies—not locally validated findings.

MODEL 01

Resident estimate

Bedroom-specific occupancy rates, an explicit vacancy allowance, and low / central / high assumptions.

MODEL 02

School enrollment

Bedroom-specific student yields, separated from any claim about school assignment or capacity.

MODEL 03

Mobility screening

Person-trip rates adjusted by parking supply and transit context—never assigned to a specific street.

MODEL 04

Site context

Proposed land cover compared with a demonstration baseline and mapped environmental flags.

05
Lynn source registerCandidate sources named in the project specification
BoundaryU.S. Census TIGERwebOfficial federal · live ↗BasemapOpenStreetMap contributorsOpen data · live ↗GeographyMassGIS data layersOfficial state · candidate ↗Land useCity of Lynn zoningOfficial local · candidate ↗SchoolsMA district profilesOfficial state · candidate ↗TransitMBTA V3 APIOfficial agency · candidate ↗
Read this before using results

Citynario estimates plausible impacts under stated assumptions.

Results are for exploration and decision support—not prediction, legal determination, permitting, or professional engineering certification.