Landscaping a New Home, Step by Step.

When Should I Start?

Earlier than most people expect. The best time to bring in a landscape designer is before the builder's final grading, when it costs little to set a patio elevation, leave a sleeve under the driveway or stub a gas line for a future fire feature. Once concrete is poured and sod is down, the same changes mean cutting out finished work.

For most buyers in a new subdivision, that means starting design when you have a closing date. Spring build dates fill early, so a fall or winter closing lines up well with a spring build.

If you're building custom, bring the designer in while the house plans are being finished. The landscape plan can then set floor and patio heights together, place downspouts where they can drain, and route power, gas and water to where the yard needs them.

What the Builder Leaves You

Builders' landscape packages vary. They often cover the front yard with sod, a tree or two and sprinklers, and leave the back as graded dirt. Read your purchase agreement and the HOA's rules side by side: if the subdivision requires the backyard to be landscaped too, that part is yours.

New lots share familiar problems. On a Dry Creek Ranch backyard, we found poor surface drainage that left soggy low spots after every rain, and compacted soil that resisted healthy turf, a classic combination in newer subdivisions. Construction traffic packs the soil down, and building and grading can bring up the layer of lime that lies under many southern Idaho topsoils, which University of Idaho Extension links to yellowing, iron-starved plants.

So we start below ground: loosening and amending planting areas, fixing drainage, then building hardscape and irrigation before the lawn and plants go in.

HOA Landscaping Deadlines

Subdivisions often set a deadline for landscaping after you close or move in, sometimes for the front yard only and sometimes for the whole lot. The window, and what counts as complete, vary from one subdivision to the next, so check your CC&Rs and design guidelines before you plan the schedule.

Approval comes before the work. Plans usually need the architectural committee's sign-off before anything is built, and in newer subdivisions the developer may still run that committee: for associations formed after July 1, 2025, Idaho law lets the developer keep architectural review during its period of control, unless the declaration says otherwise.

If the deadline is close, ask the committee for an extension in writing and show it a designed plan with a build date. A real plan makes a stronger request than bare dirt. Our HOA guide covers what to submit.

Final Grading and Drainage

Idaho's residential code, based on the International Residential Code, requires lots to be graded so water drains away from the foundation: at least 6 inches of fall within the first 10 feet. Where lot lines, walls or slopes don't allow that, drains or swales must carry the water away, and hard surfaces within 10 feet of the house must slope at least 2% away from it.

Landscaping can undo that in an afternoon. Raised beds against the house, a patio set too high or a load of topsoil can leave water running toward the foundation. The code also requires foundation walls to stand at least 6 inches above finished grade, or 4 inches where there is masonry veneer, so soil and mulch can't simply be heaped against the house.

We check the builder's grades before we design, keep that fall in every plan, and carry water from the downspouts to where it can soak in or leave the lot properly. On the Dry Creek Ranch backyard, the fix was a perforated French drain along the patio and across the low lawn, daylighting at the far edge of the property, built before any hardscape went in.

Call 811 Before Anyone Digs

Idaho law requires anyone excavating to request utility locates through the one-number service, Digline, at least two business days and no more than ten before digging. You can call 811 or file a ticket online, and the utilities mark their lines for free. Marks are good for up to four weeks, and if digging hasn't started within three, the request has to be renewed.

The only exemption that fits a yard is digging less than 15 inches deep on private property outside a recorded utility easement, and even then not where there's reason to think a line is there. Footings, walls, tree pits and grading usually go deeper, so we request locates for every project.

The utilities mark their own lines. Private lines added later, such as a gas line to a grill, power to a shed or an irrigation main, may not be marked, so tell us what you know about your lot.

Irrigation Hookups

New subdivisions in Nampa, Meridian and Boise must have pressurized irrigation, canal water that runs completely separate from the drinking water system. Depending on where you live, a district, a canal company or the city runs it. With the Nampa & Meridian Irrigation District, for example, the district owns the lines up to the delivery valve on your lot. The sprinkler system after it is yours, and the district asks that it be easy to disconnect from that valve.

Before you design, find out who supplies your water, when the season runs and whether there's a watering schedule. NMID turns its systems on around April 15 and off around the first week of October, and asks that each zone be designed to draw no more than 5 to 7 gallons per minute. Its advice to new buyers is simple: ask about irrigation water before you buy.

If the builder installed a basic system, we check its zones, heads, pipe and controller before deciding whether to extend it or replace it as part of the new design.

The Seasons, and Building in Phases

Each season suits different work:

• Fall and winter. Design, HOA review and permits. Hardscape can often be built whenever the ground isn't frozen or saturated.
• Spring. The busiest build season. Irrigation water arrives around mid-April, so lawn and planting follow it.
• Summer. Building continues, and new lawns and plants need close watering through the heat.
• Early fall. Cooler days suit planting, but new plants still need water after the canals close in early October, so we plan fall planting around that.

Building in phases works well when it is planned. Design the whole property once, then build in an order that never undoes finished work: grading, drainage, irrigation mains, sleeves and conduit first, then the terrace and walls, then structures, fire and planting. A complete backyard typically invests $75,000–$130,000, and the whole property, front and back, $120,000–$210,000, design and build included. One sensible split is the backyard first and the front later.

See new-home landscapes for how we plan the whole property around your HOA's timeline.