TOC Tier 3: How a Single Zoning Tier Changes a 90015 Deal by 40%
The City of Los Angeles built one of the most aggressive density-bonus regimes in the country, then made the eligibility math nearly invisible to anyone without a planner on retainer. Operators who can decode it find themselves writing offers on the same downtown lots a competitor passed on the week before. And walking away with 40-70% more buildable square footage. This is how the math works, what Tier 3 actually grants in 90015, and where the program quietly fails.
Where the program comes from
The Transit Oriented Communities Affordable Housing Incentive Program. Usually shortened to TOC. Was created by Measure JJJ, approved by Los Angeles voters in 2016, and codified in LAMC §12.22 A.31. The program offers density, FAR, and parking incentives to developers who voluntarily set aside a portion of units as restricted-affordable, on sites located within a defined radius of qualifying high-quality transit. It is layered on top of California's State Density Bonus Law (Government Code §65915), and in practice the two are usually combined.
What makes TOC unusual nationally is that the size of the bonus is tied to where the site sits, not just what you build. The City divided eligible parcels into four tiers, with Tier 4 being the most generous. Tier 3 is the most common substantial-bonus tier in central Los Angeles. And 90015, which covers most of South Park, Fashion District, and Pico-Union edges, has more Tier 3 parcels than almost any zip code in the city.
The four-tier framework
A site qualifies for a tier based on its proximity to two transit categories. Major Transit Stops are the city's heavy- and light-rail stations. Frequent Bus Intersections are intersections where two or more bus routes meeting frequency thresholds cross. The qualifying radii are:
| Tier | Distance from Major Transit Stop | Distance from Frequent Bus Intersection |
|---|---|---|
| Tier 1 | 1,500 ft of intersection of two bus routes (no rail required) | n/a |
| Tier 2 | Within 1,500 ft of qualifying rail station | or within 750 ft of frequent bus intersection |
| Tier 3 | Within 750 ft of qualifying rail station | or within 500 ft of frequent bus intersection |
| Tier 4 | Within 750 ft of intersection of two qualifying rail stations / lines | n/a |
The distances are measured from the property line of the parcel to the centerline of the qualifying transit stop or intersection. Two parcels on the same block can sit in different tiers if one is on the corner closest to the rail and the other is mid-block. This is why a tier check is the first thing an EMC client runs before signing an LOI on a downtown site, not the last.
What Tier 3 actually grants
For a 100% residential project (the most common TOC application), Tier 3 grants the following base incentives over the underlying zoning:
- Density bonus: 70% increase over by-right unit count (rounded up).
- FAR bonus: 50% increase to allowable Floor Area Ratio.
- Parking reduction: 0.5 spaces per studio or 1-bedroom; 1.0 space per 2+ bedroom unit; 0 spaces per restricted-affordable unit. (And under AB 2097, sites within ½ mile of a Major Transit Stop have no parking minimum at all. Which usually swallows the TOC parking schedule entirely.)
- Three additional incentives from a defined menu (height, yard reduction, lot coverage, open space modification, etc.). The number scales by tier. Tier 3 grants three; Tier 4 grants four.
In exchange, the project must restrict a defined percentage of total units (counting the bonus units) at deeply affordable income levels. For Tier 3, the operator chooses one of three on-site set-asides:
- 11% Extremely Low Income (≤30% AMI), or
- 14% Very Low Income (≤50% AMI), or
- 23% Lower Income (≤80% AMI).
Most developers select the 11% ELI option because it minimizes the rent-restricted unit count, even though those units are restricted at the lowest rent threshold. The set-aside is a 55-year covenant.
The 40% delta. A real 90015 walk-through
Pick a representative South Park site: 7,500 SF lot, R4 zoning, no specific plan overlay, within 700 feet of a Metro A Line station. By-right, the lot allows 1 unit per 400 SF of lot area and a 3.0 FAR. With Tier 3, the same lot suddenly looks very different.
Forty units instead of eighteen on the same lot. More importantly, with no parking required, the 33,750 buildable SF goes entirely to housing instead of being eaten by parking podium. On a typical pro forma in this submarket. Assume $475/SF construction all-in, $850/SF stabilized value. The Tier 3 site supports roughly $4.7M in residual land value versus roughly $3.4M by-right. That is the 40% delta. On the same dirt.
Where the program quietly fails
Tier 3 is not a free lunch. Three structural risks regularly turn the apparent windfall into a delayed, downsized, or dead deal.
1. SB 8 timelines and Measure ULA interactions
SB 8 (Housing Crisis Act of 2019) imposes processing-time guarantees and replacement-housing obligations when existing units are demolished. Measure ULA, the city's transfer tax on properties valued at $5M+ (with a higher tier above $10M), has changed seller behavior on land assemblies. A Tier 3 project on a site that requires demolition of any existing residential units will trigger SB 8 replacement requirements in addition to TOC affordability. Often double-counting the same affordable obligations and changing the unit mix materially.
2. The "extreme low income" rent floor
The 11% ELI option is seductive because it minimizes restricted units, but ELI rents are deeply below market. On a 40-unit project, the 5 ELI units may be rentable at roughly $700-900 per month all-in, versus market-rate units in the same building clearing $2,800-3,400. That gap matters in lease-up, in operating expense allocation, and especially in the underwriting of any LIHTC equity layered on top.
3. Site plan reality vs. envelope math
The bonus stack tells you what you can build on paper. It does not tell you what fits on the lot once you account for setbacks, fire lane requirements, podium constraints, and the realistic geometry of a building that must include private and common open space. On constrained downtown lots, the difference between paper density and architecturally feasible density can be 15-25%. A feasibility pass with an architect who actually builds in this submarket is the only way to find out before you pay for the lot.
How to run a 60-second pre-screen
Before paying for a full feasibility study on a downtown LA lot, do this:
- Pull the parcel up on the City's ZIMAS map and confirm zoning (look for R4, R5, C2, C4. The typical TOC-compatible base zones).
- Draw a 750-foot circle around any rail station within sight. If your parcel is inside it, you are likely Tier 3 or 4. (Confirm with the Department of City Planning before you spend money.)
- Check whether the parcel currently has any residential units. If yes, factor SB 8 replacement obligations into your unit-mix assumption.
- Check whether the deal triggers Measure ULA at acquisition. If so, model the seller's net carefully. Sellers often hold out when the tax bites.
- If the math still pencils, get a 4-hour feasibility from an architect with TOC experience. That is the cheapest insurance you can buy at this stage.
What this means for the deal you are looking at right now
If you are evaluating a downtown LA site and want a fast read on the tier, the buildable count under TOC, and the realistic delta versus by-right, that is exactly the kind of question the EMC strategy call is built for. Bring the address, the broker package, and any prior feasibility, and we will walk the math with you.
Get the tier check before you write the offer.
30-minute strategy call. Bring an address. Get a verdict.
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