TRPA and its mission^[1] are one-of-a-kind and represent an unprecedented attempt to address environmental, economic and cultural values at both regional and local levels. The agency is the lead organization responsible for creating and implementing region-wide solutions to protection. The agency is a symbol of environmental responsibility and stewardship and provides a legal means to govern the region. TRPA is recognized throughout the world ^{[citation needed]} for what it contributes to the science of resource protection. Much of the effort put forth is groundbreaking and the problems addressed have no textbook remedies. This is in part what makes the agency a lightning rod attracting a wide range of opinions and emotions.

The TRPA has adopted a three-pronged strategy to restore the environment of Lake Tahoe:

• Implement a regulatory program minimizing the negative impacts of new development.
• Improve the environment through a $1.5 billion capital improvement program repairing damage caused by past development.
• Scientifically research the effectiveness of the regulatory and capital improvement programs.

The regulatory program has been in place for more than 35 years and the TRPA evaluates itself every five years. While regulation is one of the pillars of the TRPA's plan, the agency also emphasizes the capital investment and scientific research components of its strategy which are embodied in the Environmental Improvement Program (EIP).^[2]

TRPA is primarily an environmental agency, but recognizes the interdependency of environmental, economic and social well being in the Tahoe Region. Environmental groups, property rights advocates, business interests and numerous government agencies agree that tourism and successful, locally-owned businesses are the key to economic vitality at Lake Tahoe and are dependent upon the attractiveness of the region's environment. The TRPA Regional Plan^[3] is intended to set a measured rate of residential, commercial and recreational growth, the impacts of which are controlled through mitigation measures.

The TRPA governing board consists of 15 members^[4] (members shown in italics are required to reside outside of the TRPA region):

• California delegation (7 members):
  • One member appointed by the El Dorado County board of supervisors
  • One member appointed by the Placer County board of supervisors
  • One member appointed by the South Lake Tahoe city council
  • Two members appointed by the Governor of California
  • One member appointed by the speaker of the California State Assembly
  • One member appointed by the California State Senate rules committee
• Nevada delegation (7 members):
  • One member appointed by the Douglas County board of county commissioners
  • One member appointed by the Washoe County board of county commissioners
  • One member appointed by the Carson City board of supervisors
  • One member appointed by the Governor of Nevada
  • The Nevada Secretary of State (or his designee)
  • The director of the Nevada Department of Conservation and Natural Resources (or his designee)
  • One member chosen by the other members of the Nevada delegation
• One non-voting member chosen by the President of the United States

At present, the make up is composed of seven trained as attorneys (with the Executive Director licensed to practice law in Washington DC^[5]), five elected politicians, two environmentalists, and the Deputy Director from the Nevada Department of Conservation and Natural Resources.^[6]

Since the Tahoe Regional Planning Agency must regulate how individuals develop their property within a fragile environment, controversy and criticism are no strangers. TRPA has been collecting research on the effects of development on Lake Tahoe's clarity for more than 35 years, and has set limits on the amount of land that can be covered by buildings and pavement, called land coverage, on an individual parcel (ranging from 1% in areas it deems to be highly sensitive areas to 30% in areas deemed to be least sensitive areas). The designation of sensitivity is at the sole discretion of the TRPA.

Lake Tahoe residents, the State of California, environmental groups and property rights groups have repeatedly sued TRPA to change restrictions and fees in the Tahoe Region.^{[7][8][9][10][11]} The charges levied against TRPA represent a wide range of grievances and displeasure with the Agency, claiming that the agency is too powerful, abusive or biased, exclusively run by non-elected officials, or applying selective environmental data that goes far beyond their mandate of environmental protection, and asserting restrictions on residents and development of private property violate a range of laws, including the Takings Clause in the U.S. constitution.

There is also concern over the scientific evidence TRPA uses to form its regulations. For example, for more than twenty years, construction of new piers in "prime fish habitat" areas was prohibited, but studies were later released that showed some manmade structures in "feeding and escape cover" habitat areas could actually benefit fish populations.

Criticism of TRPA often falls under the category of economics. Some business owners and homeowners express concerns that they want more freedom to build or expand in order to realize the maximum value from their properties. TRPA says it works diligently to find innovative ways to allow property owners to develop their property in environmentally sensitive ways and has created programs that balance environmental impacts through mitigation, but this claim is also disputed claiming that the TRPA is unaccountable and ignores the public. Mitigation measures usually come in the form of fees which are used to fund environmental improvement and restoration projects, but there is no way for residents and businesses to verify whether the mitigation fees they paid were applied to actual environmental mitigation. Some feel that the fees amount to undue taxation, such as a per day fee for visitors renting a passenger vehicle. In 2021 this fee was $5.50 per day,^[12] with the proceeds earmarked to fund public transportation, which some argue falls outside of the 1969 TRPA Charter. TRPA posts their fee schedule online^[13] which shows that homeowners and businesses must pay potentially thousands of dollars in parcel improvement application fees, including site assessment fees, Information Technology fees, surveys fees, processing fees, per square footage fees, and many other static and variable fees before an individual or business can even begin to plan for improvement to their private lot. The fees have been viewed as discriminatory in practice, with only wealthy residences and businesses able to cover fees that are exorbitant in comparison to surrounding cities and counties.

In 2005, in an effort to bring all buoys on the lake into compliance with current regulations, TRPA initially proposed a buoy permitting fee of $5,000 for the first buoy and $7,500 for a second buoy. Many residents protested thinking that the TRPA did not have the power to charge taxes. Due to public opposition and guidance from the TRPA Governing Board, a new proposal was made in 2006 reducing the permitting fee to $500 for the first buoy and $1,500 for the second. If the fee is approved, the agency claims it would be used to offset the impacts to water quality and to fund a watercraft and illegal buoy enforcement program. The proposal, after two years of discussion, was supposed to be finalized in February 2007. But the League to Save Lake Tahoe and the Sierra Club, which want the pier moratorium to continue, continued to protest the changes. Furthermore, some California government agencies continue to question the environmental impacts of more piers.

Other individuals and public interest groups feel that TRPA does not go far enough in strictly controlling development. They claim that, since Lake Tahoe belongs to everyone, property owners must take responsibility for the impacts of their development^{[citation needed]}. Further, supporters of the agency's policies point out that comprehensive management strategies in communities across the nation are funded by assessing fees on the associated properties and participants who benefit the most from such impacts^{[citation needed]}.

Other issues the agency is criticized for are fine amounts and local representation at the agency. TRPA fine amounts are generally around $5,000 for violations like unpermitted tree-cutting. While some critics say such fines aren't large enough since a wealthy lake front owner may happily pay that much to improve their view, other critics argue that it is further evidence of TRPA's over-reaching expansion. Since TRPA is a bi-state entity with quasi-federal powers, state & local elected officials have little recourse in opposing the agency's strategies. Although half of the TRPA's 15-member Governing Board is made up of locally elected officials, there is public sentiment that they have only the courts to turn to for balance. If anyone contests the agency's decisions, they feel they are painted as against the environment. Furthermore, critics of the agency have alleged that TRPA staff represent themselves as "locals", which is actually true of most of the board and the staff, though a small percentage of staff members live outside the Tahoe basin, in nearby areas such as Carson City. Since staff are the individuals with whom most of the negotiations are engaged, and who propose nearly all agenda items the Governing Board hears, there is local sentiment that the agency serves too few and is not working for the benefit of local residents and businesses. A movement led by local property rights groups and real estate developers to have all Governing Board members elected by local residents has been pushed for several years, but has thus far been resisted by government officials and environmental groups, due to concern that environmental protection of the lake will be compromised in favor of development.

An example of the controversy the agency faces is development in the shore zone. Lake Tahoe's shore zone is where the lake meets the land. Because of its relationship to the quality of scenery, recreation, and lake clarity, the shore zone is one of the most sensitive areas in the region. The Environmental Protection Agency has designated Lake Tahoe as Outstanding National Resource Waters under the Clean Water Act. Having this special designation calls for a non-degradation standard and a high level of protection. There are only three bodies of water on the West Coast with this designation; Mono Lake in California, and Crater Lake in Oregon are the other two.

The shore zone of Lake Tahoe has a long and challenging history. Regulations affecting the construction of piers, buoys and other shore zone-related issues have been researched and debated extensively since the 1980s. The Tahoe Lakefront Homeowners Association and others call for fewer restrictions on development, claiming that every lake front property owner should be allowed to build a pier. Other groups, such as the League to Save Lake Tahoe and the Sierra Club, argue that allowing hundreds of new piers will harm fish habitat and scenic quality, and will further block the public from access to beaches and will inhibit kayaking along the shore.

For more than 25 years, the TRPA has not allowed new structures such as piers in areas considered "prime fish habitat." These areas are still considered limited and fragile. However, aforementioned scientific studies were conducted over a period of 15 years that showed protective measures could be taken to reduce the impacts of additional piers on the lake and that some underwater structures actually benefited fish populations in "feed and escape cover" habitat areas. In 2005 and 2006, after 20 years of debate, the agency released an environmental document with alternatives that would allow some new development in the shore zone, but says it balanced new development with programs that increased public beach access, protected sensitive areas, and set high standards for development.

According to the agency, the shore zone example shows how TRPA attempts to serve all members of the public fairly by using the best available science and planning practices to protect Lake Tahoe and create a balance between the man made and natural environments. The agency says it understands that on some controversial issues, consensus isn't possible. But after robust collaboration between TRPA and the public, common ground can emerge to move the process forward. Even so, the shore zone changes remain in limbo.

In June 2007, the Angora Fire burned 3,100 acres (13 km²) and destroyed 254 residences and many other structures adjacent to South Lake Tahoe. A reversal of the winds as the fire approached the city limits near the "Y" (junction of US50 and 89) saved the area from a far more devastating disaster. Owners, developers' rights groups, and local real estate lobbyists immediately charged that the structures burned because of TRPA's strict environmental regulations. While inconsistent with Cal Fire regulations, TRPA field staff prohibited property owners from establishing proper defensible space around their homes and required the laying down of newly fallen and highly flammable dry pine needles to serve as erosion control in favor of lake clarity. In public hearings, TRPA countered that defensible space has always been a significant agency concern, and has always been encouraged by the agency, citing published TRPA regulations, public documents, and previous public hearings. However, in post fire hearings stating this position, those that lost their homes were so infuriated that security escorts were required to protect TRPA Staff's exit.

Prompted by local newspaper articles quoting allegations of TRPA staff forcing homeowners to pile dry pine needles and other flammable materials around their homes, and even up against the structures, creating dangerous fire hazards, state and local politicians reacted swiftly by calling for investigations into TRPA policies and staff misconduct. In July 2007, California and Nevada governors Arnold Schwarzenegger and Jim Gibbons signed a bi-state "Blue Ribbon Fire Commission" agreement, to investigate fire issues in the Lake Tahoe basin, including TRPA regulations that caused problems that led to the loss of hundreds of structures.

While not meeting the legal threshold of staff misconduct and detrimental agency policies, the U.S. Forest Service fire investigations in the Angora Fire investigations confirmed that most of the structures caught fire from "firebrands"—pieces of burning wood—carried in the smoke column either from neighboring structures or from nearby burning vegetation. The investigations found that a few older homes had highly flammable wooden shake roofs and inadequate fire clearance around the structures. In some cases, winter fire wood and kindling supplies were piled too close to homes. The study did state that dead and dying vegetation along Angora Creek "likely contributed" to the fire's rapid spread. Native riparian vegetation in "stream environment zones" (such as Angora Creek) in the Tahoe Region are protected as sensitive resources, and removal of vegetation from these areas is vigorously restricted by TRPA to protect damage to soils, habitat, and water quality.

While fire investigators have concluded that several factors contributed to the disastrous fire, including unburned piles from previous forest thinning projects, lack of defensible space, stockpiling of flammable materials near structures, and thick ground covers, investigators found that several structures actually burned the surrounding vegetation—not the reverse.

There is continuing disagreement regarding ground cover within 30 feet (9.1 m) of structures. In certain cases, TRPA regulations require ground cover to provide protection from soil erosion on disturbed soil. Ground cover may often be lawn or other landscaping, however site-specific native vegetation, or naturally occurring forest litter such as a thin layer of pine needles or wood chips, is generally the environmentally preferable alternative, and is more cost-effective and easier to maintain. While some groups argue that utilizing pine needles and wood chips as ground cover up to the 30-foot perimeter of a structure is a violation of California Public Resources Code 4291 requiring defensible space in California, a 0.5 to 1 inch (13 to 25 mm) covering of forest litter (duff layer), once decay has taken place, is not sufficient to carry a flame^{[disputed – discuss]} intense enough to burn structures from a distance of 30-feet away^{[citation needed]}. However, freshly applied pine needles remain highly flammable until decomposition has fully occurred. Regardless, TRPA staff and local fire groups are investigating possible nonflammable or flame-retardant alternatives to provide both soil protection and fire prevention. In addition, TRPA staff and board members state they are working with the local fire protection districts to simplify procedures for homeowners to implement defensible space requirements around their homes, and eliminate confusion and possible conflicts regarding TRPA erosion control requirements and defensible space requirements, and to ease restrictions on use of heavy machinery in sensitive areas near communities. However, after the Angora Fire, it took the TRPA over 15-years to clarify pine needle removal guidelines, with homeowners and businesses remaining subject to TRPA fines of $5000 or more for removing pine needles beyond 5-feet of a structure (a.k.a. Zone 0 space) until 2022^[14] as ground cover within their defensible fire space zone remained in direct contradiction to the 30-foot guidelines for defensible space (Zone 1) that was consistently recommended by the California Department of Forestry and Fire Protection, which explicitly recommends to "remove dead or dry leaves and pine needles".^[15] The TRPA requires an $83 non-refundable filing fee with any tree removal application, further slowing defensible space creation and arguably prevents lower income residents from defending their space.^[16]

While investigations into the causes and effects on the Angora Fire show that allegations of staff misconduct may have occurred, and resource protection policies may not have been the root cause of the disaster, anti-TRPA sentiment remains extremely high among most residents. Many have concluded that the agency has infringed on property safety, constitutional private property rights, and impeded economic development in the Lake Tahoe region.

In August/September 2021, during the Caldor fire,^{[citation needed]} government crews cut large swaths to the bare soil and aggressively thinned neighboring forests to protect the City. This emergency act lowered the fire height from 100s of feet as was seen during the Angora fire approaching the Y-area, to about fifteen feet, thus saving the City. As a result, significant tree thinning without the required TRPA permits and removal of freshly fallen pine needles to the bare ground occurred widely. Proactive techniques of applying Phos-check home defense fire retardant products to vegetation has also become more widespread. While clearly, the Angora Fire has reinvigorated the public taking hold of their own safety, the Caldor fire has cemented it.

Tahoe-Sierra Preservation Council, Inc. v. Tahoe Regional Planning Agency, 535 U.S. 302 (2002), a 2002 United States Supreme Court case involving the regulatory power of the agency.

Suitum v. Tahoe Regional Planning Agency, 520 U.S. 725 (1997) a 1997 United States Supreme Court case holding a federal court should not consider a claim against an agency before the government has reached a “final” decision. See also, Pakdel v. City and County of San Francisco, 594 U.S. ___ (2021).

• TRPA Homepage
• A Guide to the Walter E. MacKenzie papers, NC1060. Special Collections, University Libraries, University of Nevada, Reno
• A Guide to the Tahoe Regional Planning Agency records, 82-37. Special Collections, University Libraries, University of Nevada, Reno.