Nashville & Middle Tennessee
Monthly edition

The Plan Room Published by Mark Lynn Design

October 2026 edition

What changed for builders in September

Fifteen items from Metro and the counties around it. A few lines on what each means for your project, and a link to the record.

Rendering of a stone and wood house with an arched entry, a wide stone walkway and flowering beds
On the cover: 715 Davis Drive, Brentwood. Rendering by Mark Lynn Design.
On the cover: 715 Davis Drive, Brentwood. Rendering by Mark Lynn Design.
The Plan Room
October 2026 edition
What changed for builders in September
Fifteen items from Metro and the counties around it. A few lines on what each means for your project, and a link to the record.
The Good News
Wilson and Maury counties are adding adults ages 25 to 44 faster than any other counties in Tennessee.
Ultium Cells will invest $1 billion in its Spring Hill battery plant, and GM projects 500 new jobs.
Waymo and Lyft are opening an 80,000-square-foot Nashville facility with more than 70 full-time jobs.
Williamson County's median single-family sale price passed $1 million in August, and homes sold in 26 days on average, down from 37.
What changed in September
Already in effect
TDEC · Effective Oct 1 · Adopted

New state stormwater permit for construction sites

Silt fence and mulch rolls along a graded construction site
Silt fence and mulch rolls keep sediment on a construction site. Photo: Gerry Shimek/USFWS, public domain

If you're filing a new NOI for a site that disturbs an acre or more, or a smaller lot inside a larger subdivision plan, you file under the 2026 permit, which runs through September 2031.

If you already have coverage under the 2021 permit, TDEC's page does not yet say how it carries over. Ask your civil engineer before your next submittal.

Read the TDEC construction stormwater permit →


Gallatin City Council · Sept 1 · Adopted 6‑0 (draft minutes)

Gallatin replaced its zoning code and map

Two-story brick storefronts on Gallatin's town square
Gallatin's town square. Photo: Ichabod, CC BY-SA 3.0

If you own or are buying land in Gallatin, a new zoning ordinance and map took effect on adoption. Check the new map before you lay out lots or size a house.

If you had a zoning application accepted as complete but not yet adopted, it converts to the matching new district when Council adopts it, under the ordinance's conversion table (Exhibit D).

Read the Gallatin Council packet, Sept 15 →


Metro Planning Commission · Sept 24 · Adopted 7‑0

Four Nashville corridors lose their transit-growth designation

A purple and silver WeGo bus inside a transit center bay
A WeGo bus at Elizabeth Duff Transit Center, Nashville. Photo: Mliu92, CC BY-SA 4.0

If you're planning a density rezoning or SP on Woodmont Blvd, parts of Harding Pl, Sidco Dr and Powell Ave, or two stretches of Old Hickory Blvd, you lose the transit-corridor policy argument. Most transition areas along them, about 800 feet wide, become neighborhood policy.

If you already have zoning there, nothing changes. Metro says no zoning or entitlement moves.

Read the Sept 24 Planning Commission staff report →


Metro Planning · Deadline Dec 16 · Adopted

File by Dec 16 for the first 2027 Planning Commission hearing

If you want a rezoning or SP heard on January 28, 2027, the filing deadline is noon on December 16, and your documents must be in the portal 24 hours before that.

If you're aiming for this year, the remaining 2026 meetings are October 22, November 12 and December 10.

Read the 2027 Planning Commission schedule →


Metro Planning Commission · Sept 24 · Adopted 7‑0

East Bank: street grid set for 72-acre Wasioto Bend

Nissan Stadium seen across the Cumberland River
Nissan Stadium on the East Bank, 2022. Photo: Antony-22, CC BY-SA 4.0

If you're looking at land between Korean Veterans Blvd, Shelby Ave, I-24 and the river, Metro has now set the street grid, street classifications and rights-of-way there. Site plans will be measured against them.

If you're hoping it adds development rights, it does not. The staff report says the plan creates no entitlements.

Read the Sept 24 Planning Commission staff report →


Metro Planning Commission · Sept 24 · Approved and recommended 7‑0

Planning Commission overrules staff on three infill cases

If you're facing a staff disapproval on an infill lot or two-family rezoning, the hearing still counts. The Commission approved a Bowling Ave resubdivision with compatibility exceptions and recommended Southview Dr and Haynes St rezonings, all against staff.

If you read this as a policy shift, it is one meeting, and the two rezonings still go to Council.

Read the Sept 24 action agenda →

Up for a vote
Metro Council · Second reading Oct 6 · Proposed

Council bill would track the combined traffic impact of development

The colonnaded limestone front of the Historic Metro Courthouse
The Historic Metro Courthouse, where the Metro Council meets. Photo: euthman, CC BY-SA 2.0

If you're planning a rezoning or a larger project in Davidson County, BL2026-1526 directs NDOT to build a tool that tracks the cumulative traffic effects of developments and rezonings, to program regional fixes and capital projects.

If it passes, watch how the tool is defined. It could shape the traffic studies and off-site improvements asked of individual projects.

Read the Oct 6 Council agenda →


Metro Council · Public hearing Oct 6 · Proposed

Rivergate: infrastructure paid for by special assessments

If you control a large site outright, this is a live example of a state-law tool: an infrastructure development district that pays for public infrastructure through special assessments on the district's own parcels.

If you're weighing the same approach, read the terms of RS2026-2294. The owner of every parcel, Rivergate MP Holdings LLC, petitioned for it.

Read the RS2026-2294 in Legistar →


Metro Council · Public hearing Oct 6 · Proposed

Three large residential rezonings go to Council

If you're tracking new supply, the three are 1065 Barnes Rd (109 multifamily units and 78 lots on 55.6 acres), 300 McCann St (311 units) and 5683 Cane Ridge Rd (68 units). All were recommended 7-0 with conditions.

If your SP sets exterior material standards, note that each of these three carries a separate bill authorizing its material restrictions.

Read the Oct 6 Council agenda →


Metro Council · Public hearing Oct 6 · Proposed (Planning Commission recommended 7‑0)

Room-by-room rentals would count as boarding houses

If you're planning by-the-room leases in a single-family or two-family zone, BL2026-1520 would close that path. Rooms rented on separate leases would count as a boarding house, which those zones do not allow.

If you're in a zone that allows boarding houses, Metro's staff report says they fall under the commercial building code (IBC), not the residential code (IRC). Price that in.

Read the Sept 24 Planning Commission staff report →


Metro Council · Public hearing Oct 6 · Proposed (Planning Commission recommended disapproval 4‑3)

Child care zoning rewrite

If your mixed-use or neighborhood-center project plans a child care tenant, BL2026-1433 would replace "day care" uses with "child care" and "adult day services" and change the related conditions.

If you're committing a site plan to that use, confirm the final conditions after the vote.

Read the Oct 6 Council agenda →


Williamson County Regional Planning Commission · Public hearing Oct 8 · Proposed

Williamson County: new Arrington Village zoning district

Arrington Vineyards sign and lawn under bare trees
Arrington Vineyards in Arrington, Williamson County. Photo: Dclemens1971, CC BY 4.0

If you own or are buying land around Arrington, read the proposed Arrington Village (AV) standards. The same hearing would apply the new district on the zoning map (case 6-2026-603).

If you want to speak, sign up between 5:00 and 5:30 p.m. before the meeting.

Read the Oct 8 agenda item →


Metro Planning Commission · Next date Oct 22 · Deferred

Battle Road: 112-lot subdivision deferred again

If you're tracking large single-family subdivisions in Southeast Nashville, Courtyards at Battle Grove (82 acres at 1002 and 1010 Battle Rd, AR2a to SP, 112 lots) has now been deferred six times without a public hearing. Next date: October 22.

Read the Sept 10 Planning Commission minutes (draft) →

Studies to watch
Metro Planning · Sept 2 · Study

Metro: urban-core zoning no longer matches the market

Aerial view of downtown Nashville towers, rail yards and the Gulch
Downtown Nashville, February 2026. Photo: Quintin Soloviev, CC BY 4.0

If you build Downtown, in Midtown, on Music Row or on the East Bank, Metro's report says SPs and height modifications have become standard because by-right zoning is out of step with the market and adopted plans.

If your projects rely on those tools, follow the next phase. Its scenarios could change districts, standards, approvals and the transfer-of-development-rights program. Nothing changes yet.

Read the Metro Planning release →


Metro Planning · Sept 21 · Study

Countywide ecological strategy under way

The Cumberland River with downtown Nashville in the distance
Downtown Nashville and the Cumberland River from Shelby Park, 2024. Photo: Antony-22, CC BY-SA 4.0

If you build on wooded or stream-side land in Davidson County, watch this one. It is Metro's first countywide ecological planning effort since the 2011 Open Space Plan, and it is set to produce conservation priorities and policy recommendations by fall 2027.

If you're permitting now, nothing changes today.

Read the Metro Planning announcement →

On the calendar
Oct 6Metro Council: BL2026-1526, RS2026-2294, three rezonings, BL2026-1520, BL2026-1433
Oct 8Williamson County Regional Planning Commission: Arrington Village
Oct 22Metro Planning Commission: Battle Road and others
Nov 12Metro Planning Commission
Dec 10Metro Planning Commission
Dec 16Noon filing deadline for the January 28, 2027 Planning Commission
Rendering of a kitchen with a brass range hood and stone backsplash
Rendering, Mark Lynn Interiors.
From the publisher
Complimentary renderings when you work with Mark Lynn Interiors

Mark Lynn Design has drawn homes across Middle Tennessee since 1991, and about thirty a month come through the studio today. Mark Lynn Interiors carries that work inside: finishes, lighting, furnishings and selections, coordinated with the plans from the first set.

Except the Lord build the house, they labor in vain that build it. Except the Lord keep the city, the watchman waketh but in vain.
Psalm 127:1 (KJV)