diff --git a/harvester/lease.go b/harvester/lease.go
new file mode 100644
index 0000000..109f5cc
--- /dev/null
+++ b/harvester/lease.go
@@ -0,0 +1,123 @@
+// Copyright 2016 Open Networking Laboratory
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"net"
+	"strings"
+	"time"
+)
+
+// BindingState type used to maintain lease state
+type BindingState uint
+
+// constant values of lease binding state
+const (
+	Unknown   BindingState = 0
+	Free      BindingState = 1
+	Active    BindingState = 2
+	Expired   BindingState = 3
+	Released  BindingState = 4
+	Abandoned BindingState = 5
+	Reset     BindingState = 6
+	Backup    BindingState = 7
+	Reserved  BindingState = 8
+	Bootp     BindingState = 9
+)
+
+// String return a string value for a lease binding state
+func (s *BindingState) String() string {
+	switch *s {
+	case 1:
+		return "Free"
+	case 2:
+		return "Active"
+	case 3:
+		return "Expired"
+	case 4:
+		return "Released"
+	case 5:
+		return "Abandoned"
+	case 6:
+		return "Reset"
+	case 7:
+		return "Backup"
+	case 8:
+		return "Reserved"
+	case 9:
+		return "Bootp"
+	default:
+		return "Unknown"
+	}
+}
+
+// Lease DHCP lease information
+type Lease struct {
+	BindingState    BindingState     `json:"binding-state"`
+	IPAddress       net.IP           `json:"ip-address"`
+	ClientHostname  string           `json:"client-hostname"`
+	HardwareAddress net.HardwareAddr `json:"hardware-address"`
+	Starts          time.Time        `json:"starts"`
+	Ends            time.Time        `json:"ends"`
+}
+
+// MarshalJSON custom marshaller for DHCP lease
+func (l *Lease) MarshalJSON() ([]byte, error) {
+
+	// a custom marshaller is required because the net.Hardware marshals to a string
+	// that is not in the standard MAC address format by default as well as the
+	// binding state is marshalled to a human readable string
+	type Alias Lease
+	return json.Marshal(&struct {
+		HardwareAddress string `json:"hardware-address"`
+		BindingState    string `json:"binding-state"`
+		*Alias
+	}{
+		HardwareAddress: l.HardwareAddress.String(),
+		BindingState:    l.BindingState.String(),
+		Alias:           (*Alias)(l),
+	})
+}
+
+// parseBindingState conversts from a string to a valid binding state constant
+func parseBindingState(bindingState string) (BindingState, error) {
+	switch strings.ToLower(bindingState) {
+	case "free":
+		return Free, nil
+	case "active":
+		return Active, nil
+	case "expired":
+		return Expired, nil
+	case "released":
+		return Released, nil
+	case "abandoned":
+		return Abandoned, nil
+	case "reset":
+		return Reset, nil
+	case "backup":
+		return Backup, nil
+	case "reserved":
+		return Reserved, nil
+	case "bootp":
+		return Bootp, nil
+	case "unknown":
+		fallthrough
+	default:
+		return Unknown, nil
+	}
+
+	return 0, fmt.Errorf("Unknown lease binding state '%s'", bindingState)
+}