AC condensers and mini-splits in Tremé: the rules change at Claiborne

Tremé is two districts in one for AC work. HDLC’s district sheet says the area “between North Claiborne Avenue and North Rampart Street is subject to the full control of the HDLC,” while the lake side of Claiborne is controlled only for demolition and demolition by neglect (Historic Districts, page 02-31). The same mini-split on the same kind of shotgun needs a Certificate of Appropriateness on one side of the overpass and not on the other.

Rules checked October 20, 2026, against the HDLC Design Guidelines. Tremé was designated in 1998.

Rampart to Claiborne: full control

This is the older part of Tremé, which the district sheet describes as “dominated by Creole Cottages, townhouses and shotguns,” mostly set along the front property line with no front yard. Every exterior change visible from the street goes through the HDLC, including equipment and “required electrical and plumbing connections” (Site Elements, page 10-8). For AC that means:

A ground condenser goes in the rear yard, or a side yard if the rear isn’t possible, and it’s screened if it can be seen from the street (page 10-9).
A mini-split condenser on a wall should be “visually unobtrusive, and rationally organized.” Staff can approve it when it sits at least 10 feet back from the street-facing wall. On a house built at the sidewalk, that’s 10 feet from the property line.
Exposed conduit and piping “should be minimized,” and abandoned units come off (page 10-9).

The review level depends on the building’s rating. Unobtrusive equipment on a Contributing or Non-Contributing building is a staff approval, and on a Significant building it’s a Commission decision. HVAC work that meets the guidelines qualifies for the HDLC’s Express Lane, which issues approvals in 1 to 3 business days.

Lake side of Claiborne: demolition only

Above Claiborne the HDLC’s powers are demolition and demolition by neglect. The HDLC’s district chart also marks “review and comment” for this part of Tremé (Introduction, page 01-5), and the district sheet doesn’t. Review and comment is advisory: the HDLC may offer suggestions on visible alterations, but it doesn’t issue or deny a Certificate of Appropriateness for them (page 01-4).

So a condenser swap or a new mini-split on the lake side needs the city mechanical permit and has to meet the zoning rules for equipment: rear or interior side yard, two feet off the lot line, screened if visible. The HDLC’s placement rules don’t apply. One exception covers both sides: an individual landmark gets HDLC review for all exterior work, visible or not.

What the permit records show

The two halves look nothing alike in the permits. Counting HVAC permits on every kind of building since 2018, mini-splits were 23.8% of permits between Rampart and Claiborne. That’s the highest share of any district area in the city. On the lake side, the share was 2.5%. The table counts every kind of building, including apartments and shops, because the riverside half has too few house permits to report a share on its own (97 since 2018).

Area	What the commission reviews	Parcels	HVAC permits	Mini-split share	Median days to issue
Tremé, Rampart to Claiborne	Full control	841	168	23.8%	6 days
Tremé, lake side of Claiborne	Partial: demolition, plus non-binding comment	1,331	362	2.5%	4 days
All of Tremé		2,172	530	9.2%	5 days
All HDLC full-control areas		12,075	3,282	9.0%	7 days
Outside every local historic district			14,583	2.9%	3 days

Areas on this page compared with the rest of the city. HVAC permits on every kind of building. Permits and mini-split share: applied for 2018 through October 17, 2026. Days to issue: median, applied for 2024 on. “Too few” means fewer than 100 permits (share) or 20 (days).

The permits don’t say why mini-splits cluster on the riverside. The rules may be part of it: a small condenser tucked in the back is easier to get approved there than a full-size unit in a narrow side alley. The older houses may be part of it too. The figures don’t separate the two.

The wait for the city permit was short on both sides: a median of 6 days between Rampart and Claiborne and 4 days on the lake side, for permits applied for since 2024. Outside every district it was 3 days.

Which side is your house on?

Claiborne is the line in most of the district, but use the City’s historic district map for the actual lot, or call HDLC staff at (504) 658-7040. Some lots along Esplanade Avenue fall in the Esplanade Ridge district instead, which has its own split. See Esplanade Ridge.