10 Home Improvements That Increase Resale Value in South King County

Not all home improvements are created equal when it comes to resale value. Some projects return 80% or more of their cost, while others barely move the needle. Here's what the data says about the best investments for South King County homeowners.

1. Kitchen Remodel (Minor to Mid-Range)

ROI: 72-85%

A mid-range kitchen remodel consistently ranks as the highest-ROI project. This means updated cabinets, new countertops, modern fixtures, and fresh flooring — not necessarily a gut renovation. Buyers in Maple Valley and Renton expect updated kitchens, and homes without them sit on the market longer.

2. Bathroom Remodel

ROI: 60-75%

Updated bathrooms are a close second. A modern walk-in shower, new vanity, and updated tile can transform a dated bathroom for $15,000-$30,000 and return most of that at sale.

3. Window Replacement

ROI: 65-75%

New energy-efficient windows are one of the few improvements that pay you back twice — through energy savings while you live there and through higher resale value when you sell. Buyers specifically look for newer windows during home tours.

4. Hardwood or LVP Flooring

ROI: 70-80%

Removing carpet and installing hardwood or luxury vinyl plank flooring is one of the most cost-effective improvements you can make. It modernizes the entire home and is the first thing buyers notice.

5. Composite Decking

ROI: 65-75%

Outdoor living space is highly valued in the Pacific Northwest. A Trex composite deck provides a low-maintenance entertaining space that appeals to virtually every buyer.

6. Fresh Interior Paint

ROI: 100%+

The cheapest high-impact improvement. Neutral, modern paint colors throughout the home cost $3,000-$6,000 professionally and can return their full cost or more by making the home feel move-in ready.

7. Curb Appeal (Exterior Paint, Landscaping, Front Door)

ROI: 70-100%

First impressions matter enormously. A freshly painted exterior, clean landscaping, and a new front door can increase offers by 5-10% compared to a home with tired curb appeal.

8. Garage Door Replacement

ROI: 90-100%

Surprisingly, this is one of the highest-ROI projects nationally. A new garage door is visible from the street and signals that the home has been maintained.

9. Energy-Efficient Upgrades (Insulation, HVAC)

ROI: 60-70%

While less visible, energy upgrades reduce monthly costs and appeal to environmentally conscious buyers. In our climate, proper insulation and an efficient heat pump are significant selling points.

10. Accessory Dwelling Unit (ADU)

ROI: Variable (potentially 100%+)

ADUs are increasingly valuable in King County as housing costs rise. A well-built ADU can generate rental income that more than covers its construction cost over time, while also increasing the property's appraised value.

What NOT to Invest In Before Selling

• **Swimming pools:** Most King County buyers see pools as maintenance liabilities
• **Highly personalized upgrades:** Bold paint colors, unusual tile patterns, or niche room conversions
• **Over-improving for the neighborhood:** A $200,000 renovation in a neighborhood of $500,000 homes won't return its cost

The Bottom Line

Focus on projects that modernize the kitchen and bathrooms, improve energy efficiency, and enhance curb appeal. These are the areas where buyers make decisions, and they consistently deliver the best returns in our South King County market.

A. Sanders Construction helps homeowners make smart remodeling investments. Whether you're improving for your own enjoyment or preparing to sell, we deliver quality work that adds lasting value. Call (206) 799-6580 for a free consultation.