Buying a Home in New Construction: Process, Costs and Timeline in Katy, Texas

Katy is one of the most active new construction markets in greater Houston, and that activity has not slowed in September 2026. The western Harris County and Fort Bend County land corridors that surround Katy still have large tracts available for master-planned development, which is why builders continue to open new sections and new communities here while much of inner Houston has very little ground left to build on.

Builder Activity Across the Area

Right now, active new construction is happening in communities including Elyson (off FM 529 near Katy Mills Mall), Cane Island (along I-10 West near the Katy city center), Sunterra (FM 529 corridor in Katy), and the newer sections of Tamarron in Fort Bend County. Builders currently selling in these communities include Perry Homes, David Weekley Homes, Lennar, Toll Brothers, K. Hovnanian, and Westin Homes, among others. Each builder operates its own sales office inside the community, staffed by agents who represent the builder exclusively.

If you want a broader look at which master-planned communities are currently under active development, the article What New Construction Master Planned Communities Are Being Built in Katy Texas Right Now covers the full landscape across the area.

What the Katy New Construction Market Looks Like in September 2026

Entry-level new construction in Katy currently starts around $290,000 to $320,000 for homes in the 1,500 to 1,800 square foot range in communities like Sunterra. Mid-range builds in Elyson and Cane Island typically run $380,000 to $550,000 for 2,200 to 3,500 square feet. Toll Brothers and similar luxury builders are pricing homes in the $650,000 to over $1 million range in select sections. These are base prices before lot premiums and design center upgrades, which we cover in detail below.

For context on how new construction prices compare to the broader Katy resale market right now, see What Are Home Prices Doing in Katy Texas Right Now in September 2026.

2. The New Construction Buying Process Step by Step

Buying a home in new construction follows a different sequence than buying a resale property, and understanding each stage before you walk into a builder's sales office puts you in a much stronger position. The National Association of Realtors outlines the key considerations in their Consumer Guide: Buying Land and Building a New Home, which is worth reading before you start touring model homes.

Step 1: Choose Your Community and Builder

Your first decision is which community fits your priorities: commute distance, lot size, amenity package, and price range. Elyson, for example, sits roughly 30 to 35 miles from downtown Houston via I-10 and features a large amenity center with a lazy river, multiple pools, and miles of trails. Cane Island is closer to the historic Katy city center and offers larger lots with a more traditional neighborhood feel. Sunterra is positioned along FM 529 and has a resort-style lagoon as its central amenity. Each community also has a defined set of builders, so your builder choice is partly determined by which community you select.

Step 2: Select Your Lot and Floor Plan

Once you choose a builder, you will select a lot from whatever inventory is available in the current release. Lot selection matters more than many buyers expect. Corner lots, cul-de-sac lots, greenbelt-backing lots, and lots with larger square footage all carry premiums, sometimes ranging from $5,000 to $40,000 or more depending on the builder and community. You will also choose a floor plan at this stage. Most Katy-area builders offer between four and twelve floor plans per series, with options for single-story, two-story, and multigenerational layouts.

Step 3: The Purchase Agreement

Builder purchase agreements are written by the builder's legal team and are heavily weighted in the builder's favor. These contracts are substantially different from the Texas Real Estate Commission standard resale contract most buyers are familiar with. They typically require an earnest money deposit of one to three percent of the base price, paid at signing. Most builder contracts in the Katy market require this deposit to be non-refundable after a short review period, often three to ten days. Read every page carefully before signing, and have your buyer's agent review the contract with you.

Step 4: Design Center Selections

After signing the purchase agreement, most Katy-area builders schedule a design center appointment within two to four weeks. This is where you choose flooring, cabinets, countertops, fixtures, exterior colors, and structural options like extended patios, bay windows, or media rooms. Design center upgrades are one of the most significant cost variables in the entire new construction buying process. It is common for buyers to walk in expecting to spend $15,000 in upgrades and walk out having selected $60,000 or more. Builders price their upgrades at a margin, so understanding what you can upgrade after closing through a third-party contractor is an important part of managing total cost.

Step 5: Construction and Inspections

Once your design selections are finalized, the builder submits plans for permitting and schedules your home in their production queue. Most builders in Katy allow buyer access to the property only during scheduled walk-throughs at the pre-drywall stage and at the final walk-through. You have the right to hire an independent inspector at both of these stages, and doing so is strongly recommended.

A pre-drywall inspection lets a licensed inspector examine the framing, plumbing rough-in, electrical rough-in, and HVAC ductwork before it is all covered by drywall. Issues found at this stage are far easier and cheaper for the builder to correct than problems discovered after the home is complete. Budget approximately $350 to $500 for a pre-drywall inspection and another $400 to $600 for a final inspection from an independent inspector.

Step 6: Final Walk-Through and Closing

The final walk-through typically occurs one to three days before closing. You and the builder's representative walk the completed home together with a punch list to document any items that need correction. These might include paint touch-ups, trim gaps, appliance issues, or grading concerns in the yard. Get every item documented in writing. Closing itself follows the same general process as a resale transaction: you sign loan documents, pay closing costs, and receive keys.

3. What New Construction Actually Costs in Katy

The full cost of buying a home in new construction goes well beyond the base price listed on the builder's website. Understanding all the layers before you commit is essential to staying within your budget.

Base Price vs. True Cost

The base price is the starting point, not the final number. In Katy's current market, a home advertised at $420,000 as a base price will commonly close at $470,000 to $510,000 once lot premiums, structural options, and design center upgrades are added. Buyers who do not set a firm upgrade budget before their design center appointment frequently exceed their original price target by 10 to 20 percent.

Builder Upgrades and Lot Premiums

Lot premiums in Katy communities vary widely. In Elyson, a greenbelt-backing lot in a mid-range section might carry a $20,000 to $35,000 premium. In Cane Island, larger estate lots can carry premiums of $50,000 or more. Structural options such as a covered outdoor living area, a game room addition, or a three-car garage can add $15,000 to $40,000 each. Design center finishes like upgraded tile, quartz countertops throughout, and hardwood flooring add up quickly when priced at the builder's retail rate.

Closing Costs and Financing Fees

Closing costs on a new construction home in Katy typically run two to four percent of the final purchase price. On a $480,000 home, that is $9,600 to $19,200 in closing costs. Many builders offer to cover a portion of closing costs if you use their preferred lender, which can be a genuine financial benefit but also means you should compare that lender's rate and terms against outside lenders before committing. Builder-preferred lenders sometimes offer rate buydowns or closing cost credits that offset their slightly higher origination fees.

Property Taxes and HOA Fees

Property taxes in the Katy area vary depending on which county and municipal utility district (MUD) your new construction home sits in. Homes in Fort Bend County communities like Tamarron often have combined tax rates (county, school district, MUD) in the range of 2.8 to 3.3 percent. Homes in Harris County communities like Elyson or Sunterra may have rates in a similar range depending on the specific MUD. On a $480,000 assessed value, a 3.0 percent combined rate means approximately $14,400 per year in property taxes, which significantly affects your monthly payment.

HOA fees in Katy master-planned communities typically run $800 to $1,500 per year, though some communities with more extensive amenity packages charge more. These fees fund amenity center maintenance, trails, pools, and community programming. Always request the full HOA disclosure documents, including reserve fund status, before you close.

4. New Construction Timelines: What to Expect

Timeline is one of the most common sources of stress in the new construction buying process, and Katy buyers need to understand the difference between two very different scenarios before they choose a path.

Spec Homes vs. To-Be-Built Homes

A spec home (short for speculative home) is a home the builder has already started or completed without a buyer under contract. Buying a spec home in Katy can mean closing in as little as 30 to 60 days if the home is already complete, or 60 to 120 days if it is still under construction. The trade-off is that your design selections are already made; you get what the builder chose.

A to-be-built home is one you contract on before construction begins, giving you full input on lot, floor plan, and design selections. In Katy's current market, to-be-built timelines from contract signing to closing typically run six to ten months for production builders like Perry Homes or Lennar, and ten to fourteen months for semi-custom and custom builders. Toll Brothers and similar builders on the higher end of the price spectrum often quote twelve to sixteen months for a fully customized build.

What Can Delay Your Build

Common causes of construction delays in Katy include permitting backlogs at the Harris County or Fort Bend County level, material supply issues, subcontractor scheduling conflicts, and weather. The Houston area's rainy season and summer heat can both affect concrete pours and framing schedules. Buyers should build a buffer of at least four to eight weeks into any move-in plan based on a builder's estimated completion date, and should not give notice on a lease or schedule a move until they have a confirmed closing date.

5. Mistakes to Avoid When Buying New Construction in Katy

The new construction buying process has specific pitfalls that resale buyers are often unprepared for. These are the most consequential ones to watch for in the Katy market.

Going in Without Your Own Agent

The sales agent in a builder's model home works for the builder, not for you. Their job is to sell you that builder's homes at the best terms for the builder. Having your own buyer's agent at your side costs you nothing as a buyer: the builder pays the buyer's agent commission. Your agent can help you evaluate lot selection, negotiate upgrades or closing cost contributions, and review the purchase agreement before you sign.

One important note: most builders require that your buyer's agent be registered with them on your first visit to the community. If you tour a model home without your agent and then try to add them later, many builders will not honor the registration and your agent will be unable to represent you in that transaction. Register your agent before you walk into any model home.

Skipping the Independent Inspection

New construction homes are not automatically defect-free. Katy-area inspectors regularly find issues in new builds including improper grading that directs water toward the foundation, HVAC duct leaks, missing insulation in attic spaces, and improperly installed windows. The builder's own inspections and city or county inspections do not replace a thorough independent inspection by someone you hired. This is not an area to cut costs.

Misunderstanding Builder Incentives

Builder incentives in Katy right now commonly include closing cost credits of $10,000 to $20,000, mortgage rate buydowns, or free upgrade packages tied to using the builder's preferred lender or closing by a specific date. These can be genuinely valuable, but they are structured to benefit the builder's sales pace as much as the buyer's finances. Always get the incentive terms in writing, confirm what happens to the incentive if your closing date shifts, and compare the preferred lender's total loan cost against at least one outside lender before deciding.

For a broader look at how the Katy housing market is moving right now and how new construction fits into the overall picture, the article How Is the Housing Market in Katy, Texas Doing Right Now and Are Prices Going Up or Down has current data worth reviewing before you make any decisions.

HousingWire's breakdown of the do's and don'ts of buying a new build is also a practical read that covers several of these same issues from a national perspective, with points that apply directly to what buyers encounter in Katy communities.