Constrained Lots. Done Without Damage.
Austin, TX & Salt Lake City, UT · Heritage Tree Ordinance Compliant
Zero-lot-line lots, 36-inch side yards, and protected oaks sitting right where the dig needs to go. Compact equipment, CRZ flagging, and a process that keeps your permit clean and your client's trees standing.
Tight Access and
Protected Trees
Often Happen Together.
The Lot Is Too Tight for a Standard Machine
Central Austin and SLC infill lots were built before anyone planned for excavators. Zero-lot-line setbacks, narrow side yards, shared driveways, and existing structures on three sides make standard machine access impossible on a significant share of urban lots.
Most excavation contractors look at a 36-inch side yard and say no. We look at it and plan a compact equipment path, a spoil staging strategy, and a sequence that works. Then we quote it honestly.
The Tree Is Protected and the Dig Has to Happen Anyway
Austin's Heritage Tree Ordinance protects trees 19"+ DBH from any work within the Critical Root Zone — which is calculated as 1 foot of radius per inch of trunk diameter. On a mature oak, that CRZ can extend 18–22 feet from the trunk.
Getting it wrong isn't just about killing the tree. It's $5,000–$50,000 in city fines, stop-work orders, and a permit process that puts your whole project on hold. We flag, document, and stay outside the boundary — verified before the first pass.
Know the Rules
Before You Dig.
Not After.
The Austin Heritage Tree Ordinance is one of the most enforced code items on residential builds in the city. Inspectors look for it. Neighbors report it. And the fines are large enough to materially affect a project's profitability.
Constrained Sites Require
A Different Approach.
CRZ Flagging + Documentation
Before any equipment enters the site, we measure and flag every Heritage Tree CRZ boundary — physical stakes at the drip line perimeter, photographed and logged. Your GC, arborist, and permit inspector all see the same documented boundary. No ambiguity about where the machine is allowed to be.
Compact Equipment Access Planning
We walk the access route before mobilizing — every time. On tight lots, this means confirming gate widths, overhead clearance, surface condition of the access path, and turn radius at the excavation site. Equipment is selected after the site walk, not before. If a 36-inch corridor is the only option, we bring the machine that fits it.
Hand Dig at Sensitive Boundaries
When excavation must happen within or adjacent to a CRZ — with arborist authorization — we hand dig at the boundary interface. Pneumatic air spade available for root-sensitive work where a shovel would cause damage. Machine excavation stops at the boundary. No exceptions for schedule pressure.
Spoil Management on Constrained Sites
On tight lots, you can't pile spoil next to the excavation — there's no room, and a pile inside a CRZ is a violation. We plan spoil staging and haul routing before we break ground. All material removed before we demobilize. No spoil pile left in a tree's root zone, against a foundation, or blocking access for the next trade.
We Have the Right Machine
for Tight Spaces.
Most excavation contractors own one or two machine sizes and quote jobs around what they have. We select equipment after the site walk — so the machine matches the access, not the other way around.
Compact Excavator
Our tightest access machine. Fits through standard residential gates and side yards. Full hydraulic hammer capability for rock in confined spaces. Zero-tail-swing models available for work close to structures and tree trunks.
Mid-Size Compact
More digging force than the smallest machines — useful when the access path allows it but a full-size excavator still won't fit. The workhorse for most Austin infill foundation and pool shell jobs with moderate access constraints.
Manual + Air Spade
For root-sensitive work inside arborist-authorized CRZ boundaries. Air spade excavates soil around roots without cutting them — the gold standard for work near mature trees. Slower and more expensive, but it keeps the tree alive and the permit clean.
Site Walk to
Clean Handoff.
Trees Intact.
Site Walk + Constraint Inventory
Before quoting, we walk the lot. Access route, overhead clearance, adjacent structures, tree locations and DBH measurements, CRZ radii, spoil staging options. Everything constrained on this site gets documented before a number is given.
CRZ Flagging + Team Confirmation
Heritage tree CRZ boundaries staked and photographed. Written summary sent to your GC, arborist, and permit inspector before mobilization. If any required work falls inside a CRZ, arborist authorization is confirmed in writing before we proceed — not assumed.
Equipment Selection + Mobilization Plan
Machine confirmed for site access dimensions. Haul route confirmed. Spoil staging location identified. The machine shows up because we know it fits — not as a surprise at 7am when the operator realizes the gate is too narrow.
Excavation Within Flagged Boundaries
Machine stays outside CRZ flags — always. Hand dig at sensitive boundaries with arborist authorization. If anything looks different from what the site walk showed — a root closer to the surface, a boundary flag that moved — we stop and call before continuing.
Spoil Haul + Lot Restoration
All material removed via confirmed haul route. No spoil pile left in root zones, against structures, or blocking the next trade's access. Final photos sent to your team before demobilization — CRZ flags visible and intact in the documentation.
Constrained Sites Cost
More. Here's Why.
Tight lot and heritage tree jobs take longer, require more planning, and need smaller (sometimes slower) equipment. These ranges reflect that reality — not a standard open-lot job rate with a small premium bolted on.
| Project Type | Constraint | Market | Estimated Range |
|---|---|---|---|
| Pool Shell — Tight Lot | 36–48" side yard access | Austin / SLC | $7,500 – $16,000 |
| Pool Shell — Heritage Tree Adjacent | CRZ flagging + boundary management | Austin | $9,000 – $20,000 |
| Foundation — Infill Lot | Zero-lot-line, 36" access, urban | Austin | $8,500 – $22,000 |
| Foundation — Heritage Tree on Lot | CRZ boundary management + hand dig | Austin | $10,000 – $28,000 |
| ADU — Backyard Tight Access | Compact only, spoil haul complexity | Austin / SLC | $5,500 – $12,000 |
| Utility Trench — Heritage Tree Route | CRZ reroute or hand dig segment | Austin | $4,500 – $11,000 |
| Hand Dig / Air Spade CRZ Work | Arborist-authorized, root-sensitive | Austin | $2,500 – $8,000 |
| Full Site — Infill + Multiple Trees | Multiple CRZ zones, tight access, rock | Austin | $18,000 – $35,000 |
The Trades Most Likely
to Hit These Constraints.
Central Austin Infill Is Our Home Turf
Travis Heights, Hyde Park, Mueller, Bouldin, East Austin — these neighborhoods have the tightest lots and the most mature protected trees in the city. If you're building infill in Austin, you're dealing with both constraints on most jobs.
We've worked these neighborhoods. We know which streets have overhead utility conflicts. We know where the ordinance gets enforced hardest. We show up with a plan, not a standard open-lot rate.
- Site walk on every tight or tree-adjacent quote — no exceptions
- CRZ documentation sent to your permit file before mobilization
- Arborist coordination handled as part of our pre-dig process
- Compact equipment on-site the first day — no swap-out delays
- Preferred sub rates for infill developers with consistent volume
The Backyard Oak That's Bigger Than It Looks
Pool excavation in Austin backyards means heritage trees more often than not. The homeowner wants a pool, the oak has been there for 80 years, and the CRZ extends right into the dig zone. We've navigated this combination dozens of times.
We flag, document, and dig to spec without putting your permit at risk. If the arborist needs to be involved before we get in the ground, we tell you that upfront — not after your shell crew is already scheduled.
- CRZ measured and flagged before your pool layout is finalized
- Pool spec adjusted to avoid CRZ violations where possible
- Hand dig capability at tree-adjacent pool wall segments
- Same-day communication if site conditions require plan changes
- Partner rates for pool builders with repeat Austin volume
What Contractors Ask About
Tight Lots and Trees.
We measure DBH on-site during the site walk. 19 inches or greater at 4.5 feet above grade triggers Heritage Tree status under the Austin ordinance. We measure every significant tree on the lot — not just the obvious ones. Multi-trunk trees have their own calculation. When in doubt, we flag and defer to the arborist.
With a certified arborist's written authorization and in some cases a city permit — yes. Without it — no. We don't make that call ourselves. If your project requires work inside a CRZ, we flag it early so the arborist review doesn't delay your schedule. We've coordinated this process on many Austin jobs.
36 inches clear width for our smallest compact excavator, confirmed on site walk. That includes gate width, any overhead obstruction, surface condition underfoot, and turn radius at the work site. We confirm it fits before we quote the job — not when the machine arrives.
Better to find out before the permit is pulled than after. We flag CRZ boundaries before your pool builder finalizes the layout — which is exactly the right sequence. A 2-foot pool shift is far cheaper than a stop-work order and a $20,000 fine. We communicate what we find, and your team decides how to adjust.
Non-heritage trees can be removed as part of site clearing — see our Land Clearing service. Heritage trees we work around, not through. We do not remove or damage protected trees. If a heritage tree is structurally incompatible with the project as designed, that's an arborist and permit conversation, not an excavation one.
Yes — honestly, it does. Smaller equipment is slower. CRZ documentation takes time. Hand dig segments are labor-intensive. Spoil management on tight lots requires more haul trips. We quote the actual job, not a standard rate with a small "tight lot" adder. The site walk is what tells us what it really costs.
Tight Lots Need
a Walk, Not a Guess.
Send us the address and what you're building. We'll schedule a site walk, assess the constraints, and give you a quote you can actually plan around.
Austin, TX · Salt Lake City, UT · Licensed + Insured · Heritage Tree Ordinance Compliant