Planning a new build, an addition, a subdivision, or a commercial development in Austin? At some point in the project, the City of Austin or Travis County is going to ask for surveys, drawings, and calculations that a licensed land surveyor has to prepare. The right sequence of surveys protects your permit timeline, answers the questions the reviewer is going to ask, and keeps the design team working against real data rather than assumptions.
This guide walks through the surveys you are most likely to need on a typical Austin project, in roughly the order they come up, and when each one actually applies. Not every project needs every survey. What matters is knowing which ones are relevant to the specific work you are planning.
Boundary survey: the foundation everything else ties to
A boundary survey establishes the legal property lines on your parcel, with physical monuments set at each corner. It is almost always the first survey on an Austin development project because every other survey references the boundary for its coordinate system, and every permit the city reviews has to show the project inside that boundary.
In older Austin neighborhoods like Travis Heights, Clarksville, and Bouldin Creek, the boundary work can take significantly longer than it would on a recently platted suburban lot. The monuments in those neighborhoods were often set with conventional equipment decades ago, and reconciling the historical evidence with modern GPS measurements is a research-heavy job. Planning around that timeline matters when you are working backward from a permit deadline.
Topographic survey: designing around the land
Once the boundary is established, a topographic survey captures the three-dimensional shape of the parcel. The surveyor records spot elevations, contour lines, drainage features, existing structures, and any physical conditions the design team has to account for.
For civil engineers and architects, the topographic survey is the design basis for grading, drainage, and foundation elevation decisions. For the permit reviewer, it is the evidence that the project respects existing terrain and that stormwater runoff has been analyzed against actual ground conditions. Most Austin site plans cannot move forward without a topographic survey in hand.
Tree survey: Austin’s tree ordinance in practice
Austin takes its trees seriously. The city’s tree protection ordinance requires a tree survey on most development projects that touch property with regulated trees. The survey documents the species, size, condition, and exact location of every protected tree, and it becomes part of the site plan review package.
Projects often discover the tree survey requirement mid-planning, when the design team is already committed to a building footprint. Ordering the tree survey early lets the architect design around protected trees from the start, rather than redesigning once the reviewer flags a conflict. On properties with heritage oaks or concentrations of regulated species, the tree survey can meaningfully change the buildable footprint.
Impervious cover: planning around stormwater rules
The City of Austin and Travis County limit how much of a property can be covered by buildings, driveways, patios, pool decks, and other non-permeable surfaces. That limit, expressed as impervious cover, is one of the hard constraints the permit reviewer checks on every site plan. If the proposed project pushes the property over its allowed impervious cover, the permit does not issue.
On a residential property adding a pool, patio, or accessory dwelling unit, the impervious cover calculation is often the detail that determines whether the project fits as designed. Survey Works can quantify existing impervious cover on the property as part of the survey deliverable, so the architect has the numbers up front rather than discovering a conflict during permit review. For commercial and mixed-use sites, impervious cover interacts with stormwater detention requirements, and the calculation feeds directly into the drainage analysis the civil engineer has to produce.
Easement survey: what runs across your property
Most Austin parcels have recorded easements that govern how other parties use or access parts of the land. Utility easements let the power, water, and telecom providers run lines across the property. Access easements let neighbors or delivery vehicles cross. Drainage easements preserve natural runoff channels. Any of them can constrain where a building, pool, fence, or hardscape feature can sit.
An easement survey locates and documents the easements on a specific property. On most projects, easement identification is captured as part of the boundary or property survey. When there is a specific easement question to resolve, such as a dispute with a neighbor, a new easement to establish, or a transaction that requires documentation, a focused easement survey scope handles that work specifically. The deliverable shows where each easement sits on the ground, so the design team and the permit reviewer have a clear record of the constraints.
Utility survey and SUE: what is underground
For projects that trench, auger, or excavate near existing underground infrastructure, a subsurface utility engineering (SUE) survey is often the next piece. SUE work is organized by the ASCE 38 standard into four quality levels, ranging from records research (Level D) to physical excavation at test holes (Level A). Most Austin site plans that touch underground utilities order Level B or C work, with Level A reserved for critical conflict points.
The SUE survey protects the project from the expensive surprises that come with unknown subsurface conditions, and it satisfies the utility-coordination requirements that the city and TxDOT set on roadway and infrastructure projects.
ALTA/NSPS Land Title Survey: commercial transactions
If the Austin project involves buying or refinancing commercial property, the transaction often requires an ALTA/NSPS Land Title Survey instead of a standard boundary survey. ALTA is the national standard that title companies and commercial lenders default to on larger deals, and it rolls boundary, topographic, utility, and several specific buyer-selected investigations into one sealed document.
On development projects where the property acquisition and the site plan permitting are both in play, ordering the ALTA survey early can cover the transactional and design needs on one mobilization, rather than stacking component surveys separately.
How the surveys fit together
On a typical Austin site plan, the surveys layer in a specific order. The boundary survey comes first and establishes the legal parcel. The topographic survey adds elevation data onto the boundary. The tree survey overlays regulated trees inside the property lines. The impervious cover analysis quantifies the existing and proposed non-permeable surfaces. The easement and utility work documents what runs across and underneath the site. Each layer informs the next, and most Austin projects end up with a combined deliverable that ties them together for the permit reviewer.
On simpler projects, a single boundary and topographic survey with a tree overlay is enough. On complex commercial sites, the full set runs in parallel, and the final site plan review package references all of them. Survey Works scopes the package to match the specific project, so you pay for the data your permit actually requires and nothing more.
Working with a surveyor on an Austin project
A few practical notes that come up on almost every Austin engagement:
- Order early. Survey work on older Austin neighborhoods takes longer than it looks. Start the conversation before you lock a permit deadline.
- Combine scopes when you can. Running boundary, topographic, and tree work on a single mobilization is usually cheaper and faster than ordering them separately in sequence.
- Ask about impervious cover up front. If the project is close to the limit, the architect needs to know before the design freezes.
- Clarify easements during due diligence. An easement discovered mid-permit is a hard design constraint with no flexibility.
- Talk to the civil engineer early. The topographic density, the SUE quality level, and the deliverable format all depend on what the civil team is going to do with the data.
For an Austin site plan project of any scale, Survey Works can walk through the specific scope your permit requires and produce the sealed drawings the city and county expect. The right surveys, ordered early and combined well, are the difference between a clean permit review and a project that stalls waiting on documentation.