By Murat Gocmen, Broker, Real Estate Tahoe | Firm: CA DRE #02235314 · NV B.1003327.LLC | September 2026
Real Estate Tahoe's short answer: yes, if the lot passes four tests that many Tahoe lots fail: it has a buildable IPES score (any score outside a stream zone in Douglas, El Dorado, Washoe and South Lake Tahoe; 691 or higher in Placer County), it carries a development right and you can obtain a residential allocation (220 were available across the whole Basin for 2025-26), it has enough land coverage for the footprint you want (1 to 30 percent of the lot, purchasable at 1:1 on non-sensitive land), and a sewer district will serve it (septic is illegal in the Basin). After that comes the permit stack: TRPA or the delegated county, the building permit, fire-district WUI plan review, scenic review if the lake can see it, and a grading season that closes October 15 to May 1. Outside the Basin (Truckee, Martis Valley, Donner Summit) TRPA drops out and engineered snow loads of 300 to 430 pounds per square foot take its place. Real Estate Tahoe runs the Parcel Tracker, title and will-serve checks before a client writes on any lot.
The four tests a Tahoe lot has to pass
All four must pass anywhere in the Basin. The TRPA Parcel Tracker shows the first three by address; TRPA rules for home buyers covers built homes.
| Test | Where to look | What fails |
|---|---|---|
| Buildable IPES score | Parcel Tracker | Under 691 in Placer; any Stream Environment Zone |
| Development right plus allocation | Parcel Tracker; county or TRPA pool | No right, or no allocation left |
| Enough land coverage | Parcel Tracker; coverage determination over 14,520 sq ft | Base plus purchasable coverage under the footprint |
| Sewer service | District will-serve letter | No availability; septic is banned |
IPES in plain English
Every vacant Basin parcel was scored in 1987-88 under the Individual Parcel Evaluation System, 0 to 1017, lower meaning more sensitive. Today the line is 1 in Douglas, El Dorado and Washoe Counties and the City of South Lake Tahoe, so any parcel outside a Stream Environment Zone is buildable. Placer County's line dropped from 726 to 702 on December 17 2025 and to 691 in April 2026.
A Placer parcel within 10 percent of the line can buy up to 69 points through the IPES Limited Incentive Program, $459 to apply plus $1,157 per point. Re-evaluation needs a change in access or utility location; appeals run 180 days (2026 fees tabled below). A score of 725 or below still counts as sensitive land for coverage.
Development rights and residential allocations
TRPA Code 50.5.1 bars any residential project without an allocation approved by TRPA and awarded by the local jurisdiction. The formula: Potential Residential Unit of Use + Residential Allocation = Residential Unit of Use. Four routes:
- An allocation from your jurisdiction's pool.
- Retiring a sensitive lot (IPES 725 or below) for a TRPA pool allocation.
- Transferring a unit of use from another parcel to a non-sensitive site (726 or higher).
- Deed-restricting the home as workforce housing; TRPA awards the rights.
For 2025-26 TRPA distributed 220 allocations plus 20 in an incentive pool; 10 percent of each share is reserved for below-line parcels.
| Jurisdiction | 2025-26 | Notes |
|---|---|---|
| Douglas County (NV) | 20 | Reservation letter at permit submittal |
| El Dorado County (CA) | 60 | First-come, first-served |
| Placer County (CA) | 61 | $426 plus $171 TRPA monitoring |
| City of South Lake Tahoe (CA) | 66 | $980 plus $1,000 deposit; no waiting list (February 2025) |
| Washoe County (NV) | 13 | County pool |
| Basin total | 220 | Plus 20 incentive pool |
Rights can be bought: TRPA's development rights program lets unused units be banked or sold via the marketplace inside the Parcel Tracker or through the California Tahoe Conservancy (up to 16 weeks) on the California side and the Nevada Land Bank on the Nevada side.
Land coverage on a bare lot
TRPA prohibits new development on capability classes 1 through 3, and each vacant parcel gets base coverage of 1 to 30 percent tied to its IPES score: a 6,000 sq ft lot at 20 percent has 1,200 sq ft for roof, driveway and deck. More can be bought at 1:1 up to a stepped cap: 1,800 sq ft on a 4,001 to 9,000 sq ft lot, 20 percent on 9,001 to 14,000, 3,000 sq ft on 16,000 to 20,000. So the 6,000 sq ft lot can reach 1,800 by buying 600, no more. On sensitive land (725 or below, or classes 1-3) nothing can be added; exemptions apply only to non-sensitive land, up to 10 percent of it. After move-in, TRPA rules for property owners takes over.
Sewer, water and the driveway
The Lahontan Basin Plan requires wastewater export on the California side; a Nevada governor's executive order does the same across the line. Get a will-serve letter:
- South Lake Tahoe and El Dorado County: South Tahoe PUD charges $4.74 per livable sq ft sewer capacity, $12,617 for a 3/4-inch water meter and a $7,500 deposit.
- Placer North and West Shore: Tahoe City PUD issues a service availability letter; plan review takes 10 to 15 business days.
- Incline Village and Crystal Bay (Washoe): IVGID requires all connection fees paid before approving plans, then issues the will-serve letter (see our Incline Village guide).
The driveway needs a Placer County encroachment permit on a county road or a Caltrans permit on a state highway (more in hidden costs of buying in Tahoe).
The permit stack, in order
- TRPA pre-application consultation, $561 minimum.
- Site assessment if unverified.
- TRPA or delegated county review. TRPA has MOUs with Placer County, El Dorado County and South Lake Tahoe; in Incline Village and Crystal Bay, Washoe County needs TRPA approval or an exemption first; Douglas County goes to TRPA.
- Building permit from the county or city.
- Fire plan review and WUI class. North Lake Tahoe Fire (Washoe) adopted the 2024 International Wildland-Urban Interface Code effective January 1 2026 and requires a defensible space plan for every TRPA-permitted project; Tahoe Douglas Fire requires Class 1 Ignition Resistant Construction under the same code; North Tahoe Fire (Placer) inspects defensible space before the county final. See our defensible space guide and wildfire insurance cost page.
- Scenic review if visible from the lake or a scenic roadway corridor.
- Tree permit for live trees over 14 inches DBH.
- Grading season. Code 33.3 bars soil disturbance October 15 to May 1; no exceptions for a new foundation.
- Inspections, BMPs and security. Pre-grade and final inspections, BMPs installed, and the deposit released only after the TRPA final.
Timeline: the calendar sets the pace
Published: completeness review within 30 days (15 minor); a permit in 120 days or less from a complete application (40 minor); final inspection within 10 business days; Conservancy coverage up to 16 weeks; Truckee Fire plan review 7 to 14 business days. Not published: any lot-to-occupancy total. A foundation not dug by October 15 waits until May.
Outside the Basin: Truckee, Martis Valley and Donner Summit
Truckee (Nevada County) has no TRPA, IPES, coverage cap or allocation program. The Town of Truckee requires engineered plans for all structures and, from January 1 2026, allows the ASCE 7-22 snow hazard tool. Ground snow loads under Truckee Code 15.03.110:
| Elevation | West side (psf) | East side (psf) |
|---|---|---|
| 5,501 to 6,000 ft | 315 | 190 |
| 6,001 to 6,500 ft | 375 | 245 |
| 6,501 to 7,000 ft | 430 | 300 |
Frost depth is 18 inches below 7,000 ft, 24 above. Truckee Sanitary District charges $350 inspection, $1,500 deposit and $830 plus $0.41 per sq ft to connect; Truckee Donner PUD requires a pre-construction meeting; Tahoe Donner adds association architectural approval before the permit issues. On Donner Summit, Nevada County requires a Registered Design Professional above 70 psf; in Martis Valley, Placer County uses its own tables or ASCE 7. See also our Truckee seller page.
Financing a lot and a build
The usual route is a single-close construction-to-permanent loan. Fannie Mae Selling Guide B5-3.1-02 allows no single period over 12 months and 18 in total, and equity in a lot you already own can count toward the down payment. Real Estate Tahoe does not give tax or legal advice; take the loan and any deed restriction to your CPA and attorney.
2026 TRPA fees for a new house
Schedule effective January 20 2026; agency fees only.
| Item | 2026 fee |
|---|---|
| New residence permit | $1.71 per sq ft under roof, $862 minimum, plus $166 stormwater and $151 IT |
| Pre-application consultation | $561 minimum, deposit account |
| Site assessment | $662 complete / $529 partial |
| IPES evaluation / re-evaluation / appeal | $1,141 minimum plus deposit / $856 / $1,511 plus $2,500 deposit |
| Land capability verification | $708 |
| Coverage verification | $911 |
| Allowable land coverage determination | $714 |
| Water quality mitigation | $1.86 per sq ft of new coverage |
| Grading deposit | $546 |
| Transfer of allocation, coverage or right | $913 each; banking $392 |
Deal killers, and how we structure a lot offer
Any one of these ends it: IPES below the line (Placer under 691) or a Stream Environment Zone; no Potential Residential Unit of Use; a deed restriction to open space; a FEMA floodplain, where development, grading and filling are prohibited; no sewer availability; coverage smaller than your footprint; scenic corridor limits; zoning without residential use.
Real Estate Tahoe runs the Parcel Tracker, a current title report and the will-serve checks before a client writes on any lot, then writes a feasibility contingency long enough for a TRPA pre-application meeting and a Determination of Allowable Coverage on lots over 14,520 sq ft. A lot is worth what can be built on it; we answer that before your deposit goes hard.
Frequently asked questions
Can I buy a vacant lot in Lake Tahoe and build a house on it?
Yes, if the lot has a buildable IPES score (691 or higher in Placer County, any non-stream-zone score elsewhere), carries a development right, can get one of the Basin's limited residential allocations, has enough coverage for your footprint and has sewer. Real Estate Tahoe checks all four before a client writes.
What does the IPES score mean for a Tahoe lot?
IPES scored every vacant Basin parcel in 1987-88 from 0 to 1017. In Douglas, El Dorado and Washoe Counties and South Lake Tahoe any parcel outside a stream zone is buildable; Placer County requires 691 or higher. A score of 725 or below is still sensitive land, which blocks added coverage.
How hard is it to get a residential allocation?
For 2025-26 TRPA distributed 220 across the Basin: 66 in South Lake Tahoe, 61 in Placer, 60 in El Dorado, 20 in Douglas and 13 in Washoe, plus a 20-unit incentive pool. If the local pool is dry, retire a sensitive lot, transfer a unit of use or deed-restrict for workforce housing.
When can I break ground in Tahoe?
Inside the Basin, TRPA Code 33.3 bars soil disturbance from October 15 to May 1, with no exceptions for a new foundation. TRPA aims to issue a permit within 120 days, but an autumn permit waits for spring. Real Estate Tahoe builds the feasibility period and closing date around that calendar.
Sources
- TRPA Vacant Lots guide (April 2026) (IPES scale, buildable lines, allocation formula, coverage example, deal-killer checks)
- TRPA Governing Board, Lowering the Placer County IPES Buildable Line (Placer line 726 to 702 to 691)
- TRPA Parcel Tracker (IPES, coverage, development rights and marketplace lookup)
- TRPA Code of Ordinances (50.5.1 allocation requirement, 50.5.2 TRPA pool, 33.3 grading season)
- TRPA 2025 and 2026 Residential Allocation Distribution (220 allocations by jurisdiction plus 20 incentive pool)
- El Dorado County Building Division, South Lake Tahoe (first-come allocations)
- City of South Lake Tahoe, Apply for a Planning Permit ($980 allocation fee, $1,000 deposit, no waiting list)
- Douglas County residential allocation notice (reservation letter at permit submittal)
- Placer County 2026 TRPA Fee Schedule ($426 administration plus $171 monitoring per allocation)
- TRPA Development Rights (banking, sale and transfer of units)
- California Tahoe Conservancy, Coverage and Development Rights (16-week transactions, four-month close)
- Nevada Land Bank (buys and sells coverage and other transferable rights)
- TRPA Land Coverage (no new development on capability 1-3)
- TRPA Land Coverage 101 (no added coverage on sensitive lands)
- TRPA Permitting Process guide (MOUs, scenic standards, floodplain prohibition, 120-day standard)
- Washoe County single-family dwelling handout (TRPA approval before Incline/Crystal Bay permits)
- Lahontan Basin Plan amendment (wastewater export requirement)
- South Tahoe PUD permit guidelines and connection fees ($4.74 per sq ft, $12,617 meter, $7,500 deposit)
- Tahoe City PUD permits and inspections (service availability letter, 10 to 15 day review)
- IVGID Requirements for Construction, Water and Sewer 2025 (fees before plan approval, will-serve letter)
- Placer County Encroachment Permits (residential driveways)
- Caltrans Encroachment Permits (driveways onto state highways)
- TRPA Grading Season Exceptions (no exceptions for new foundations)
- TRPA Inspections and Securities (final inspection before security release)
- TRPA Trees and Defensible Space (14-inch and 6-inch tree permit thresholds, fees)
- North Lake Tahoe Fire Protection District code updates (2024 IWUIC, defensible space plan for TRPA projects)
- Tahoe Douglas Fire WUI Building (2024 IWUIC, Class 1 Ignition Resistant Construction)
- North Tahoe Fire appointments and inspections (defensible-space inspection before county final)
- Truckee Fire plan review (7 to 14 business days)
- Town of Truckee Snow Load Design (engineered plans, ASCE 7-22 tool)
- Truckee Municipal Code Chapter 15 (ground snow loads by elevation, frost depth)
- Truckee Sanitary District residential permit information (inspection, deposit and connection fees)
- Truckee Donner PUD residential new construction (pre-construction meeting)
- Nevada County 2025 Building Codes and Design Criteria (design professional over 70 psf, 2025 WUI code)
- Placer County Design Criteria (Martis Valley snow load tables)
- TRPA Filing Fee Schedule (effective January 20 2026) (all 2026 TRPA fees quoted)
Search homes and lots on our site, where every listing carries an STR-eligibility verdict and we can pull the Parcel Tracker record on any vacant parcel. Before you write on a lot, read the full TRPA rules for Lake Tahoe home buyers.
