Chatham County Crawl Space Drainage and Tree Protection

Before selecting a Chatham County crawl space drainage route, show nearby trees on the same plan as the trench, outlet and equipment access. A proposal can avoid the trunk yet still affect roots or the soil around them. Resolve tree protection while routes are being compared, before a crew arrives to dig. This guide focuses on planning around trees in unincorporated Chatham County, Georgia. It also points Savannah homeowners to the city's separate review process. It does not establish a tree's condition, a protected boundary or whether a particular property qualifies for an exemption.

Start with the address and recorded plat

The county's Land-Disturbing Activities Ordinance in Chapter 24 applies to unincorporated Chatham County. Its clearing-and-tree provisions also contain exemptions, including a provision concerning single-family lots recorded before the ordinance's enactment. An older house is not enough information to decide that question; bring the recorded lot information to Engineering. Ask which requirements apply to the exact work proposed, whether an earlier approved plan controls tree protection and whether there are tree easements or retained-tree areas. An exemption from one set of provisions should not be treated as clearance for every part of the drainage project. For a property within Savannah, use the city's Tree Ordinance Administration resources. The city has its own landscape and tree framework and review materials. Confirm municipal boundaries instead of choosing an office from the mailing address alone.

Request a tree-aware route drawing

Chatham Engineering's ordinance resource page links its Land Disturbing Activities Manual. The currently linked manual is internally marked “Last Edited 6/30/2026.” Use the county's current link rather than an older contractor handout when discussing the project. The 2026 manual explains that roots can extend beyond the canopy dripline. Its planning guidance addresses root zones, utility corridors and keeping construction activities out of protected areas. It also describes putting protective barriers in place before construction. Ask the county reviewer or project arborist to identify the boundaries and protection details appropriate to this property. Give the drainage designer and tree professional the same base drawing. Show tree locations, the house, access gates, existing paved areas and the proposed work. Add photographs that make the relationship between the trees and the work area clear. A separate sketch for each trade makes conflicts harder to see.

Consider more than the trench itself

University of Georgia Extension's construction-damage guidance identifies several ways work can affect a tree: severed roots, changes in soil grade, equipment injuries and soil compaction. Visible decline can be delayed. A tree that looks unchanged when the contractor leaves has not necessarily escaped damage. That makes access and storage decisions important. Ask where the crew will park, travel repeatedly, place excavated soil and unload materials. Do not assume an unused patch under a tree is suitable staging space simply because it is outside the planned trench. Bring a qualified arborist into the discussion when work could affect an established tree's roots or stability. UGA Extension recommends professional evaluation before construction. Do not cut roots to explore a route yourself, or ask a drainage installer to make an unsupported judgment that a large root is expendable.

Compare alternatives before choosing the shortest route

Ask for more than a single line from the foundation to the proposed outlet. Depending on the site, the project team may be able to consider a different alignment, different access point or a revised arrangement of collection and discharge components. Those are options for professional assessment, not instructions to redirect water into a neighboring yard or public drainage feature. Have each alternative answer three questions: Does it address the diagnosed water source? Can it be installed without unacceptable tree impacts? Is the proposed destination appropriate and approved where required? A route that resolves only one of those questions is not ready for a fixed installation plan. If an installer proposes a method intended to avoid roots, ask the arborist and relevant reviewer to assess it. Obtain a description of the working area, equipment access and any entry or exit pits. A method name alone does not describe how much of the site will be disturbed. The county manual also addresses drainage changes that cause water to accumulate near trees and calls for arborist involvement. Include the expected post-work drainage pattern in the review, rather than looking only at the tree's condition during installation.

Get the whole project in front of the right office

Chatham County's permit guidance identifies excavation and certain grade-changing site work for Engineering review. It separately lists foundation, footing, joist and bearing-support repairs among permit-related work. If outdoor drainage is bundled with structural or trade work beneath the house, describe both parts when asking what approvals are needed. For a proposal with unresolved site questions, Engineering advertises public pre-development meetings and a virtual option by request. Ask the department whether that forum suits the project or whether a direct staff consultation is more appropriate. Bring the route sketch, plat, photographs and a concise list of decisions needing review. Keep written responses and the resulting drawing together. If the route changes after estimates are collected, have the relevant professional review the revision before the crew enters a protected area. Otherwise, the priced plan and the reviewed plan can become different projects.

Put tree protection into the contractor scope

Use the quote-comparison checklist to record who supplies the route drawing, arranges any arborist assessment, installs protection, monitors access and handles restoration. Ask which tasks are included in the price and which require a separate provider. Identify who must be contacted if unexpected roots or changed site conditions interrupt the work. The Savannah-area directory includes crawl-space entries such as Healthy Crawlspace and Clark Clean. Confirm service at the exact address and whether a company offers the proposed drainage work. These listings are not endorsements or evidence that a provider supplies arborist services.

Chatham tree-protection questions

Does avoiding the trunk protect the tree?

Not by itself. Have the project's tree professional identify the area that needs protection, including roots and soil, before finalizing excavation and access.

Can I use a generic root-zone circle from the internet?

Use it only to recognize that review may be needed. Obtain the site-specific boundary and applicable protection requirements from the responsible professional and reviewing office.

What should the handoff include?

Retain the final drainage route, protection plan, approvals or written applicability responses, photographs and any recommended tree follow-up. Make clear who handles drainage maintenance and who to contact about tree changes. Source review: County, Savannah and UGA Extension sources were read October 14, 2026. The linked county manual says it was last edited June 30, 2026; UGA's article is dated March 4, 2024. Confirm current county instructions and property-specific applicability before work begins.