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Staff outlines Louisa County plan to raise minimum lot sizes and use TDRs to direct growth
Summary
Planning staff proposed raising R1/R2 minimum lots from 1.5 to 2.5 acres, establishing a PUD baseline of 1.75 dwelling units per acre, and using transfer-of-development-rights (TDR) and performance-based density bonuses to steer growth to serviceable areas while preserving rural land.
Louisa County planning staff presented a draft residential growth-management framework at a June work session that would raise baseline lot sizes and use market-based transfer-of-development-rights (TDR) incentives to concentrate development in designated growth areas.
"The areas that we're focused on... Step 2 is establish a residential density framework," staff member Chris told the Planning Commission, explaining the proposal would increase minimum lot sizes in R1 and R2 from 1.5 acres to 2.5 acres. The change is intended to slow by-right buildout and better align new development with available water, sewer and other infrastructure.
Why it matters: County planners said Louisa County continues to experience residential growth that strains school capacity and public services. The draft ties density to infrastructure by lowering the baseline density and allowing developers to regain higher densities only by purchasing development rights from rural parcels or by providing verifiable public benefits in PUD applications.
Under the proposal, PUDs would start from a baseline of about 1.75 dwelling units per acre; projects could earn additional density through TDR purchases and performance-based bonuses for community benefits such as affordable housing, infrastructure improvements or open space. "Density bonuses are performance based rather than automatic," Chris said.
The presentation included concrete examples for commercial requirements in mixed-use PUDs: a suggested floor-area ratio linking commercial square footage to housing units (for example, 10 housing units might require roughly 4,000 square feet of neighborhood-serving commercial space). Staff also proposed procedural controls so that commercial site plans be submitted and reviewed before or concurrently with residential building permits, and suggested limiting the percentage of residential certificates of occupancy issued before commercial portions meet permit/CO requirements.
Commissioners pressed staff on feasibility and tradeoffs. "If you slow growth, one byproduct is going to be increased cost per unit," one commissioner said, warning that lower baseline densities could raise housing costs unless incentives are widely used. Chris acknowledged the risk and said the county intends to monitor outcomes and adjust ratios or incentives over time.
Staff noted legal and recording issues for TDRs: "The TDR process is dictated by the Virginia code," Chris said, adding that sales of development rights are typically recorded with the deed and plat and are permanent, although the county is still clarifying whether transferred rights on a receiving parcel may later be resold or must remain tied to that parcel.
What happens next: The commission asked staff to return with additional detail on monitoring, caps or phasing to manage staff workload and market uptake. Planners said step 3 will follow next month and focus on preservation tools, including finer-grained TDR/PDR implementation and farmland protection measures.
No formal vote was taken at the work session; staff will revise the draft and return to the commission for further review and public hearings as required.
