Instant estimate for homes and businesses, Kent WA and the South Sound
Smart home cost calculator.
A range in four questions, no login.
A cost calculator for security, smart home, AV and network work. Tell it whether it is a home or a business, how big, what you want and when. It answers with a low-to-high range built from our published prices, right here on the page. For homeowners and business owners across south King County and Pierce County.
Step 1 of 4
Start overThe Rivas Technology Group smart home cost calculator runs on this page as an instant estimate. Four questions, home or business, size, the systems you want and your timeline, produce a low-to-high range from our published prices as of September 2026. A walk-through, free within 20 miles of Kent, turns the range into a fixed proposal.
- Time
- Four questions, about a minute
- Cost
- Free, no login, no sales call
- Covers
- Security, Control4, lighting, shades, theater, network, outdoor, Josh.ai, commercial AV, video walls
- Prices
- Our published figures as of September 2026, before Washington sales tax
- Next step
- A walk-through, free within 20 miles of Kent, and a fixed proposal
- Response
- Call or text back within one business day
How much does a smart home cost?
It depends on the systems and the size of the house, which is why this page is a calculator instead of a price list. As of September 2026, an Ajax security kit runs $899 to $1,699 plus installation from $390. A Control4 entry system runs $15,000 to $25,000, and a whole-home system $35,000 to $100,000 or more. The full ranges are on the smart home cost page and the Ajax cost page. The calculator below turns them into a range for your home or business.
What does the instant estimate ask?
Four things: home or business, how big, what you want, and when. For a home, size is a square-footage band; for a business it is the kind of space, from a single room to a job site.
What you want is a set of systems you can pick together. For a home: security, Control4 automation, lighting, shades, theater and audio, Wi-Fi and network, outdoor, and Josh.ai voice. For a business: security cameras and alarm, access control and intercom, conference room AV, and bar and restaurant AV. Also a video wall or large display, network and cabling, PoE lighting, and a solar tower or trailer. The timeline does not change the range; it tells us how soon to call. If you do not know an answer, pick the closest option. The walk-through settles the details.
What do you get?
A low-to-high range for the systems you picked, with each system on its own line so you can see what moves the total. Every figure is one we publish, as of September 2026, and size scales the whole-home lines such as Control4 and Josh.ai. Lines we do not publish a price for say so and stay out of the sum; the FAQ below lists them.
The range is equipment and installation before Washington sales tax. It is a range, not a proposal: the walk-through, free within 20 miles of Kent, produces the fixed price. Send the range to us with the button under it and your answers travel with the form, or keep it and plan with it. Nothing is stored and nobody calls unless you ask.
What does it not cover?
Three things: service on a system you already have, consulting, and properties that need a visit before any number makes sense. Repairs and takeovers of an existing system start at support. Design advice, bid reviews and pre-construction specs are a paid engagement on smart home consulting, credited in full toward installation. Estates, historic buildings, farms and construction sites without power start with a call. Ajax kit prices, installation and the monthly monitoring rate are published with dates and inclusions on Ajax alarm system cost. Control4 ranges are explained on the Control4 page, and the estimate agrees with both.
What happens next?
You decide. Keep the range and plan with it, or send it and we call or text back within one business day, Monday to Friday, 8 to 5. The next step is a walk-through, free within 20 miles of Kent. We come out, look at the property with you, confirm the scope your answers described, run a signal test if security is in scope, and send a fixed proposal.
Our own team designs and installs in homes; on commercial projects we bring in licensed trade partners under our design and supervision. Every proposal names the equipment, the warranty and the monitoring terms, and you own every device from the day it goes on the wall. The answers you send are handled as described in the privacy policy.
Where we work
South King County and Pierce County from our office at 415 Railroad Ave S in Kent. City pages: Kent, Renton, Tukwila, Federal Way, Auburn, Covington and Maple Valley, Tacoma, Puyallup, Sumner, Bonney Lake, Tehaleh, University Place and Gig Harbor. Olympic Peninsula by appointment. Licensed as WA electrical contractor RIVASGL799DR, active, bonded and insured (L&I lookup); BBB accredited, A+; 5.0 from 49 Google reviews. Start at security, residential or commercial if you would rather read first.
Questions about the instant estimate
How much does a smart home cost in Kent or Tacoma?
As of September 2026, an Ajax security kit runs $899 to $1,699 plus installation from $390. A Control4 entry system runs $15,000 to $25,000, and a whole-home system $35,000 to $100,000 or more. The calculator on this page narrows that to your home and the systems you pick.
Is the instant estimate free?
Yes. There is no login, no fee and no sales call. You answer four questions, the range appears on this page, and you decide whether to send it to us.
How accurate is it?
It is a range, not a proposal. Each line comes from the prices we publish as of September 2026, so it is close enough to plan and phase around. The fixed number comes from a walk-through, free within 20 miles of Kent, where we see the property and settle the scope.
Why do some lines say quoted after a walk-through?
Because we do not publish a price for them. Security systems, lighting systems, shades, network and cabling, access control, PoE lighting and solar tower leases depend on counts we take on site: doors, cameras, circuits, windows, drops. Those lines stay out of the range until we have seen the property.
Does it cover businesses?
Yes. Choose the business path for security cameras and alarm, access control and intercom, conference room AV, and bar and restaurant AV. It also covers video walls and large displays, network and cabling, PoE lighting, and the solar tower or trailer. Homes cover security, Control4 automation, lighting, shades, theater and audio, Wi-Fi, outdoor and Josh.ai voice.
What does it not cover?
Service on an existing system, consulting, and properties that need a visit before any number makes sense, such as estates, historic buildings and sites without power. Those start with a call. Ajax kit prices and monitoring rates are published on the Ajax cost page.
Is sales tax included?
No. Every range is equipment and installation before tax. Washington sales tax is added as a line item on the invoice, and proposals are fixed price before tax.
What happens with my answers?
Nothing until you send them. The estimate runs in your browser and keeps nothing. If you click Send me this estimate, your four answers and the range are written into the form so we can pick up where you left off. We do not sell them; the privacy policy describes how they are handled.
Do I have to talk to anyone?
No. Use the range to plan and come back when you are ready. If you send it, we call or text back within one business day, Monday to Friday, 8 to 5.
Send the estimate, or skip it and book the walk-through.
Send the form with the range attached and we pick up from there. Or leave the range out and we walk the property with you instead. The walk-through is free within 20 miles of Kent and ends in a fixed proposal. We call or text back within one business day.