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The Siewert Group

(262) 212-0260


(262) 378-0419

Office

200 E Capitol Dr.
Hartland, WI 53029

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Meet

Zack Siewert

Zack Siewert Hartland, WI Real Estate Agent Headshot

Zack Siewert

Known for his work ethic, strategic approach, and unwavering commitment to his clients, Zack Siewert has established himself as one of the Greater Milwaukee area's top-producing real estate professionals. Recognized as a Rising Star by Real Producers Milwaukee in 2024, Zack has continued to build on that success, consistently ranking among the top-producing agents in the Metro MLS.

Zack's approach to real estate is simple: put the client first, communicate honestly, and do whatever it takes to get the job done. His clients value his “make it happen” mentality and straightforward advice. When the stakes are highest, he remains focused and composed.

A skilled and confident negotiator, Zack has built a reputation for protecting his clients' interests while navigating complex transactions and finding solutions where others may not. 

Zack’s foundation in real estate began hands-on, working on renovation crews in college, and has since expanded to owning rental properties and renovating homes for resale. This firsthand experience gives him a practical understanding of real estate that extends well beyond the transaction. 

Outside of real estate, Zack enjoys traveling, spending time with family and friends, golfing, and exploring the outdoors with his Goldendoodle, Louis. 

For Zack, real estate has never been about simply closing transactions. It's about earning trust, delivering results, and becoming the real estate advisor his clients know they can count on for years to come.

Contact Details

Email address [email protected]
Primary phone (262) 212 0260
Address 200 E Capitol Dr Hartland WI, 53029
License #96626-94
Success Stories

Testimonials

Zack was an absolute rockstar with this latest property he helped us purchase. We had a house hit the MLS that fit our criteria, and within 24 hours he had a competitive offer in for us. That was where the work began. The house had many liens and legal issues, and Zack got us through every hurdle. His knowledge was undeniably what got us to the closing table on this deal. I would recommend him to anyone I know, and everyone who uses him says the same thing. Thank you, Zack!
Zack was an absolute rockstar with this latest property he helped us purchase. We had a house hit the MLS that fit our criteria, and within 24 hours he had a competitive offer in for us. That was where the work began. The house had many liens and legal issues, and Zack got us through every hurdle. His knowledge was undeniably what got us to the closing table on this deal. I would recommend him to anyone I know, and everyone who uses him says the same thing. Thank you, Zack!
Davis
Zack was amazing at helping us buy and resell this property. He convinced us of the deal from the start and helped us sell for over 50 thousand more than the list price. He completely understood the market and helped us make the right investment and make the best sale on the house. I highly recommend Zack if you're an investor or even if you're just a buyer or seller. He will find you the right deals! Thanks you Zack!
Zack was amazing at helping us buy and resell this property. He convinced us of the deal from the start and helped us sell for over 50 thousand more than the list price. He completely understood the market and helped us make the right investment and make the best sale on the house. I highly recommend Zack if you're an investor or even if you're just a buyer or seller. He will find you the right deals! Thanks you Zack!
Buyer
Zack did a very good job finding homes and presenting many options. He did his research and market analysis for both the sale and purchase of our homes and was right on target.
Zack did a very good job finding homes and presenting many options. He did his research and market analysis for both the sale and purchase of our homes and was right on target.
Rob
Zach was awesome to work with! He was extremely diligent when it came to helping us find our home. He went above and beyond and exceeded our expectations by always being available, taking our feedback and using it to narrow down our search, and making our offer hard to refuse with an amazing deal. I'll 100% recommend Zack to anyone I know looking to buy a home.
Zach was awesome to work with! He was extremely diligent when it came to helping us find our home. He went above and beyond and exceeded our expectations by always being available, taking our feedback and using it to narrow down our search, and making our offer hard to refuse with an amazing deal. I'll 100% recommend Zack to anyone I know looking to buy a home.
Victoriano J.
Zach was very good at getting the deal done. We put an offer in on the first house we saw, and we got the house. The process could not have gone smoother, and Zach was a big part of that.
Zach was very good at getting the deal done. We put an offer in on the first house we saw, and we got the house. The process could not have gone smoother, and Zach was a big part of that.
Ben
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Browse Our

Notable Sales

  • The Waterfront red-brick residential building with a central glass entrance tower and balconies. Sold

    $1,125,000

    130 S Water St, 101, Milwaukee, Milwaukee, WI 53204

    • 3 Beds
    • 4.5 Baths
    • 3,395 Sq.Ft.
  • Light-sided house with multiple gables, dormer windows, and a stone-faced entrance among bare trees. Sold

    $1,111,000

    N72W26488 Esker Ln, Lisbon, Lisbon, WI 53089

    • 3 Beds
    • 2.5 Baths
    • 2,600 Sq.Ft.
  • Blue-gray house with multiple gables, stone accents, and a three-car garage behind a broad lawn. Sold

    $1,100,000

    W232S8430 Rosemary Dr, Big Bend, Big Bend, WI 53103

    • 5 Beds
    • 4.5 Baths
    • 4,525 Sq.Ft.
  • New home with a dark gabled roof, stone accents, timber porch posts, and a two-car garage. Sold

    $807,900

    118 Retzer View Ct, Waukesha, Waukesha, WI 53188

    • 3 Beds
    • 2 Baths
    • 2,003 Sq.Ft.
  • Wood-sided two-story house with large windows and a small entry deck, partly obscured by a large tree. Sold

    $759,000

    W7255 Firelane 2 -, Harrison, Harrison, WI 54952

    • 3 Beds
    • 2 Baths
    • 2,040 Sq.Ft.
  • Waterfront house with a stone chimney and deck beside a rocky shoreline. Sold

    $740,000

    N8055 Cottage Ln, Friendship, Friendship, WI 54937

    • 3 Beds
    • 2.5 Baths
    • 2,464 Sq.Ft.
  • Aerial view of lakeside homes with private docks, boats, and wooded landscaped yards. Sold

    $725,000

    W989 Miramar Dr, East Troy, East Troy, WI 53120

    • 4 Beds
    • 2 Baths
    • 1,549 Sq.Ft.
  • Two Adirondack chairs overlook a lakeside dock, calm water, and homes across the shore. Sold

    $675,000

    4137 Riverside Rd, Waterford, Waterford, WI 53185

    • 3 Beds
    • 2 Baths
    • 1,790 Sq.Ft.
  • Two-story gray-sided home with an attached garage, landscaped shrubs, and a broad front lawn. Sold

    $630,000

    4712 W Woodward Dr, Franklin, WI 53132

    • 3 Beds
    • 3.5 Baths
    • 3,410 Sq.Ft.
  • Gray two-story house with a covered porch, attached garage, and flower beds; labeled a representative model for comparison. Sold

    $619,789

    645 Standing Stone Dr, Waukesha, Waukesha, WI 53189

    • 3 Beds
    • 2.5 Baths
    • 1,952 Sq.Ft.
  • Two-story brick and tan-sided home with white columns, leafless trees, and a broad front lawn. Sold

    $610,000

    8755 W Meadow Ln, Franklin, Franklin, WI 53132

    • 4 Beds
    • 3 Baths
    • 2,476 Sq.Ft.
  • Gray single-story home with a broad garage, curved brick walkway, and leafy trees. Sold

    $605,000

    S90W31245 Wigwam Dr, Mukwonago, WI 53149

    • 4 Beds
    • 2 Baths
    • 2,920 Sq.Ft.
  • Home at 3013 Crosswinds Dr with dark gray siding, white trim, and a three-car garage. Sold

    $597,000

    3013 Crosswinds Dr, Mount Pleasant, Mount Pleasant, WI 53403

    • 4 Beds
    • 3 Baths
    • 3,400 Sq.Ft.
  • Gray-and-white gabled home with a two-car garage, stone veneer, and covered front porch. Sold

    $595,000

    1325 Macintosh Way, Mukwonago, Mukwonago, WI 53149

    • 4 Beds
    • 3 Baths
    • 3,045 Sq.Ft.
  • Tan single-story home with multiple gables, two garage doors, and a sloping landscaped lawn. Sold

    $590,000

    N9174 Elm St, East Troy, East Troy, WI 53120

    • 3 Beds
    • 3 Baths
    • 3,015 Sq.Ft.
  • Beige two-story home with dark shutters, two garages, and a covered porch beneath mature trees. Sold

    $540,000

    W327S7601 Squire Ln, Mukwonago, Mukwonago, WI 53149

    • 4 Beds
    • 2.5 Baths
    • 2,897 Sq.Ft.
  • Split-level home with an elevated deck, brick lower level, and broad concrete driveway. Sold

    $532,000

    W311S8714 Cherokee Pass, Mukwonago, WI 53149

    • 3 Beds
    • 1.5 Baths
    • 1,994 Sq.Ft.
  • Yellow-sided house with an attached garage and American flag, surrounded by snow at dusk. Sold

    $530,000

    W2195 Wilmers Grove Rd, East Troy, East Troy, WI 53120

    • 3 Beds
    • 2.5 Baths
    • 2,731 Sq.Ft.
  • The Waterfront brick apartment building with a glass entrance tower and balconies. Sold

    $525,500

    130 S Water St, 107, Milwaukee, Milwaukee, WI 53204

    • 1 Bed
    • 1.5 Baths
    • 1,140 Sq.Ft.
  • Two-story gray home with a two-car garage, stone accents, and autumn landscaping. Sold

    $507,000

    610 Scenic Rd, Hartland, Hartland, WI 53029

    • 3 Beds
    • 3 Baths
    • 2,011 Sq.Ft.
  • Modern home with expansive windows, mature trees, stone garden walls, and a bird sculpture in the lawn. Sold

    $505,000

    S57W29689 Saylesville Rd, Genesee, Genesee, WI 53189

    • 3 Beds
    • 3 Baths
    • 2,750 Sq.Ft.
  • Gray-blue house with a wide driveway, multi-car garage, covered porch, and basketball hoop. Sold

    $500,000

    1402 Applewood Cir, Mukwonago, Mukwonago, WI 53149

    • 3 Beds
    • 2 Baths
    • 2,028 Sq.Ft.
  • Two-story beige house with a covered porch, white garage, and leafy trees framing the lawn. Sold

    $500,000

    2500 Fox River Pkwy, Waukesha, Waukesha, WI 53189

    • 4 Beds
    • 3.5 Baths
    • 2,583 Sq.Ft.
  • Two-story residential building with a central entrance and a walkway across a leaf-covered lawn. Sold

    $500,000

    720 E St. Paul Ave, 1-8, Waukesha, Waukesha, WI 53188

    • 3,584 Sq.Ft.
  • Split-level home with beige siding, stone accents, two-car garage, and a wide driveway. Sold

    $500,000

    W217N9748 White Horse Dr, Germantown, Germantown, WI 53017

    • 3 Beds
    • 2.5 Baths
    • 2,382 Sq.Ft.
  • Single-story home with brown siding, stone entry, and a wide dormant lawn. Sold

    $500,000

    W315S8993 Gena Dr, Mukwonago, Mukwonago, WI 53149

    • 4 Beds
    • 3 Baths
    • 3,100 Sq.Ft.
  • Tree-lined concrete driveway leading to a brick house, with low landscape lights along the edges. Sold

    $495,000

    7275 S Pennsylvania Ave, Oak Creek, WI 53154

    • 4 Beds
    • 2.5 Baths
    • 2,188 Sq.Ft.
  • Single-story ranch home with stone facade, attached garage, and mature trees behind a broad lawn. Sold

    $492,000

    N9W31078 Concord Ct, Delafield, Delafield, WI 53018

    • 3 Beds
    • 2.5 Baths
    • 1,786 Sq.Ft.
  • White two-story house with a dark gambrel roof, wide sunroom windows, and a front walkway. Sold

    $490,000

    215 W Walworth St, Elkhorn, Elkhorn, WI 53121

    • 5 Beds
    • 3.5 Baths
    • 3,141 Sq.Ft.
  • Two-story attached home with light siding, brick accents, multiple garages, and a broad paved driveway. Sold

    $485,900

    500 N 6th St, Waterford, Waterford, WI 53185

  • Light gray gabled home with a wide garage, flower boxes, and a landscaped lawn. Sold

    $485,000

    704 E Randy Rd, Oak Creek, Oak Creek, WI 53154

    • 3 Beds
    • 2 Baths
    • 2,200 Sq.Ft.
  • Aerial view of a two-story beige house, deck, and broad tree-lined lawn. Sold

    $480,000

    N7559 E Lakeshore Dr, Whitewater, Whitewater, WI 53190

    • 4 Beds
    • 2.5 Baths
    • 2,107 Sq.Ft.
  • Split-level home at night with a large front lawn, illuminated windows, and an attached two-car garage. Sold

    $475,000

    2718 Bristol Ct, Waukesha, WI 53188

    • 4 Beds
    • 2 Baths
    • 2,020 Sq.Ft.
  • Open-plan living room and kitchen with a purple sofa, patterned rug, and white cabinetry. Sold

    $470,000

    N91W29151 Center Oak Rd, Merton, Merton, WI 53029

    • 4 Beds
    • 2.5 Baths
    • 2,461 Sq.Ft.
  • Single-story ranch home with a stone-front façade, red-brown shutters, and a peacock ornament beside the lawn. Sold

    $467,000

    533 Oakland Ave, Mukwonago, Mukwonago, WI 53149

    • 3 Beds
    • 1.5 Baths
    • 1,558 Sq.Ft.
  • Single-story home with a wide garage, brick accents, and a covered front entry. Sold

    $465,000

    1170 Saratoga Pkwy, Oconomowoc, Oconomowoc, WI 53066

    • 3 Beds
    • 2.5 Baths
    • 1,547 Sq.Ft.
  • Single-story gray house with stone accents, a two-car garage, and a covered porch flying an American flag. Sold

    $450,000

    W1401 Stoney Brook Ct, Ixonia, WI 53036

    • 4 Beds
    • 2 Baths
    • 1,746 Sq.Ft.
  • Aerial view of a green-sided home with stone accents, detached garage, and broad lawn. Sold

    $440,000

    11606 W Ryan Rd, Franklin, Franklin, WI 53132

    • 3 Beds
    • 1.5 Baths
    • 1,632 Sq.Ft.
  • Two-story brick residential building with red shutters, a red-trimmed entrance, and a broad front lawn. Sold

    $439,900

    1820 W Hampton Ave, Milwaukee, Milwaukee, WI 53209

  • Gray single-story home with an attached garage, American flag, flower beds, and wide concrete driveway. Sold

    $435,000

    7950 S Cecily Dr, Oak Creek, WI 53154

    • 3 Beds
    • 3 Baths
    • 1,400 Sq.Ft.
  • Single-story gray house with an attached garage, covered porch, and broad green lawn. Sold

    $425,000

    124 Small Farm Rd, Mukwonago, WI 53149

    • 3 Beds
    • 2 Baths
    • 1,501 Sq.Ft.
  • Two-story yellow and brick house with a second-floor balcony, front hedges, and a wide driveway. Sold

    $425,000

    5727 W Wisconsin Ave, 5729, Wauwatosa, Wauwatosa, WI 53213

  • Two-story home with a brick front, red door, steep gabled roof, and colorful flower beds. Sold

    $410,000

    4063-4065 S 41st St, Greenfield, Greenfield, WI 53221

  • Single-story brick ranch home with an attached garage and driveway, framed by bare trees. Sold

    $410,000

    W280N1925 Prospect Ave, Delafield, Delafield, WI 53072

    • 3 Beds
    • 1.5 Baths
    • 1,497 Sq.Ft.
  • House entrance with glass storm door, attached garage, colorful flower planters, and address number 3214. Sold

    $405,000

    3214 Superior Ave, East Troy, East Troy, WI 53120

    • 4 Beds
    • 2 Baths
    • 1,906 Sq.Ft.
  • Tan-sided home with a raised wooden porch, broad deck, and front steps. Sold

    $401,000

    1057 Oxford Ct, Rome, Rome, WI 54457

    • 3 Beds
    • 1.5 Baths
    • 1,866 Sq.Ft.
  • Single-story brick-and-siding home with a dark front door and the number 555. Sold

    $400,000

    555 Robertson St, Wauwatosa, Wauwatosa, WI 53213

    • 4 Beds
    • 2 Baths
    • 1,546 Sq.Ft.
  • Gray ranch-style home with a two-car garage, wide driveway, and two flags on the lawn. Sold

    $391,000

    W225S9060 Mount Carmel Rd, Big Bend, Big Bend, WI 53103

    • 3 Beds
    • 1.5 Baths
    • 1,450 Sq.Ft.
  • Ranch home with an attached garage and American flag beneath orange sunset clouds. Sold

    $390,000

    1215 River Park Cir W, Mukwonago, Mukwonago, WI 53149

    • 3 Beds
    • 2.5 Baths
    • 1,916 Sq.Ft.
  • Two-story brick and white-sided home with a detached garage and wide concrete driveway. Sold

    $384,500

    3708 9th Ave, South Milwaukee, WI 53172

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Bedroom with layered white and blue pillows, a beige tufted headboard, and a ceramic bedside lamp.

Get in Touch

The Siewert Group


Zack Siewert

(262) 212-0260


Kim Siewert
(262) 378-0419
[email protected]

200 E Capitol Dr.
Hartland, WI 53029

Get in Touch

Enter a valid email
By providing your contact information to The Siewert Group, your personal information will be processed in accordance with The Siewert Group's Privacy Policy. By checking the box(es) below, you expressly consent to receive marketing or promotional real estate communication from The Siewert Group in the manner selected by you. For SMS text messages, message frequency varies. Message and data rates may apply. Consent is not a condition of purchase of any goods or services. You may opt out of receiving further communications from The Siewert Group at any time. To opt out of receiving SMS text messages, reply STOP to unsubscribe. SMS text messaging is subject to our Terms of Use.

Get in Touch

The Siewert Group


Zack Siewert

(262) 212-0260


Kim Siewert
(262) 378-0419
[email protected]

200 E Capitol Dr.
Hartland, WI 53029