Buyers in Kent, Covington, and Maple Valley are regularly choosing between resale homes and new construction communities. Both have real advantages. The comparison most buyers are running in their heads is incomplete, because a few significant cost variables rarely show up in the listing price.

Here is how the two actually compare, with the financial detail that matters.

The Sticker Price Gap Is Usually Smaller Than It Looks

New construction in South King County at the $620K-$700K price point is often priced at a modest premium over comparable resale homes in the same area. The gap at that range is typically $20K-$50K depending on the builder, community, and what is included in the base price.

That gap narrows considerably once you account for what a resale home usually requires in the first 12-24 months. Roof, HVAC, water heater, appliances, deferred maintenance - these costs vary by home, but a resale built in 2000 is carrying 25-year-old systems. Not all of them will need replacement immediately, but some will, and buyers who do not budget for this are frequently caught off guard.

A new construction home carries warranties. Typically 1 year on workmanship and materials, 2 years on mechanical systems, 10 years on structural defects. That warranty coverage has real dollar value that rarely gets factored into the comparison.

Where New Construction Costs More Than Buyers Expect

The base price on a new construction home is rarely the final price. Here is what adds to it:

• Design center upgrades. Builders show you the base finishes in the model home and offer upgrades from there. Flooring, countertops, appliances, cabinetry - a buyer who makes moderate choices at the design center can easily add $20K-$40K to the purchase. Buyers who walk in without a clear budget for this routinely spend more than planned.
• Lot premiums. Corner lots, greenbelt-backing lots, cul-de-sac positions - builders price these at a premium above base. On a community in Kent or Maple Valley, a desirable lot can add $10K-$30K.
• Landscaping and fencing. Most new construction comes with minimal landscaping. A fenced yard with basic grass and plantings can run $8K-$15K depending on lot size. Budget for it before closing, not after.
• Preferred lender conditions. If the builder's incentive package is tied to their lender, the financing cost comparison matters. The short version: get an independent quote before committing to the builder's lender.

Where Resale Costs More Than Buyers Expect

Resale buyers in this price range face their own version of cost creep:

• Inspection findings. A pre-2005 home in Kent or Covington will have some deferred maintenance. Not always disqualifying, but buyers who do not account for repair credits are taking on unknown costs.
• Immediate updates. Paint, flooring, fixtures - even a move-in-ready resale home often prompts $10K-$20K in updates within the first year. Buyers who stretch to the top of their budget on purchase price have less room to do this.
• Energy efficiency. Older homes carry higher utility costs. The gap between a 2005 resale and a 2024 new build with a heat pump and better insulation is measurable in monthly operating costs over time.
• No warranty coverage. What you see at inspection is what you get. Systems that pass inspection can still fail in year two.

A Real Side-by-Side Example

These numbers are illustrative. The structure is what matters.

The resale still comes in lower in this example - but the gap is $79K at purchase, not the headline $45K. Whether that gap is worth it depends on what the buyer values, how long they plan to stay, and how the financing compares.

The Question That Actually Decides It

Most buyers frame this as new vs. old. The more useful frame is: what does my total cost of ownership look like over five to seven years, and which option gives me more financial predictability?

New construction offers predictability and warranty coverage. Resale offers more negotiating flexibility and often more square footage or lot size per dollar at this price point.

Neither is automatically the right answer. The answer depends on the specific home, the specific community, and what the buyer's financing looks like across both scenarios.

Download our New Construction Buyer Guide for the full breakdown on what to ask, what to negotiate, and how to compare options:

Download the New Construction Buyer Guide